KR20150043056A - Solenoid valve - Google Patents

Solenoid valve Download PDF

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Publication number
KR20150043056A
KR20150043056A KR20130122029A KR20130122029A KR20150043056A KR 20150043056 A KR20150043056 A KR 20150043056A KR 20130122029 A KR20130122029 A KR 20130122029A KR 20130122029 A KR20130122029 A KR 20130122029A KR 20150043056 A KR20150043056 A KR 20150043056A
Authority
KR
South Korea
Prior art keywords
coil assembly
guide surface
tube
core
solenoid valve
Prior art date
Application number
KR20130122029A
Other languages
Korean (ko)
Inventor
이영문
김호연
Original Assignee
주식회사 현대케피코
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 주식회사 현대케피코 filed Critical 주식회사 현대케피코
Priority to KR20130122029A priority Critical patent/KR20150043056A/en
Publication of KR20150043056A publication Critical patent/KR20150043056A/en

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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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • 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
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/421—Motor capacity control by electro-hydraulic control means, e.g. using solenoid 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
    • 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
    • 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

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve, and more particularly, to a solenoid valve for controlling a hydraulic pressure to maintain a hydraulic pressure supplied to an automatic transmission.
A solenoid valve according to the present invention includes: a hollow flange having an outer circumferential surface through which a hydraulic port penetrates; a spool that linearly moves inside the flange and opens and closes the hydraulic port; a housing coupled to the other end of the flange; A core assembly accommodated in the coil assembly and having one end and the other end penetrated, a core inserted and coupled to one end of the tube, a core having one end and the other end penetrated, a coil inserted into the other end of the tube, And a bush disposed on an outer circumferential surface of the armature, the armature being linearly moved by an electromagnetic force generated in the coil assembly, the armature linearly moving the spool, And the other end of the core is provided with a first gauge facing the one end of the coil assembly, And a second guide surface facing the other end of the coil assembly is formed at one end of the pole to prevent the coil assembly from being separated from the other end of the coil assembly, And a flow preventing member for preventing the coil assembly from moving in the longitudinal direction of the tube between the first guide surface and the second guide surface is installed inside the housing do.

Description

SOLENOID VALVE

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve, and more particularly, to a solenoid valve for controlling a hydraulic pressure to maintain a hydraulic pressure supplied to an automatic transmission.

In general, a solenoid valve for a vehicle is used in a transmission that converts the power generated by the engine into a required torque according to the speed of the engine. The transmission includes a manual transmission in which the shifting process is manually performed by the driver, It is divided into a transmission.

The automatic transmission includes a torque converter, an operating mechanism, a planetary gear unit, a hydraulic control mechanism, and an electronic control unit. The hydraulic control mechanism is provided with a pressure regulating valve mechanism for maintaining a constant pressure in the automatic transmission, A solenoid valve is used as the regulating valve mechanism.

The solenoid valve used as the pressure regulating valve mechanism may be a spool type valve, a ball type valve or a poppet type valve according to its internal structure.

As shown in FIG. 1, a spool type solenoid valve among the above-described solenoid valves for a vehicle includes a flange 11 formed with a hydraulic port 17 for guiding a fluid flow, A spool 12 disposed inside the flange 11; an armature 27 disposed in close contact with the other unidirectional end of the spool 12; a bobbin 22 surrounding the outside of the armature 27; A core having one end inserted into the bobbin and a pawl inserted into the bobbin so as to be inserted into the bobbin; And a housing (21) for accommodating the housing.

Here, the bobbin 22 has one end and the other end, and the core 26 is press-fitted to one end of the bobbin 22 and the pawl 24 is coupled to the other end by press-fitting .

Generally, the core 26 and the pawl 24 are made of a metal material, and the bobbin 22 is made of a plastic material.

Therefore, when the core 26 and the pawls 24 are press-fitted into one end and the other end of the bobbin 22, the core 26 and the pawl 24 contact the bobbin 22 ) Was damaged.

In order to prevent the bobbin 22 from being broken due to an excessive impact of the core 26 and the pawl 24 as described above, The other end of the bobbin 22 and one end of the pawl 24 are spaced apart from each other by a predetermined distance to form a clearance.

When the solenoid valve is assembled, the bobbin 22 reciprocates between the core 26 and the pawl 24 by an external force.

That is, the bobbin 22 is repeatedly moved between the cavities formed between the core 26 and the pawls 24.

Therefore, the bobbin 22 is impacted repeatedly by the repetitive movement of the bobbin 22, and the components of the solenoid valve such as the core 26 and the pawl 24 are damaged.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a solenoid valve capable of preventing components of a solenoid valve from being damaged by preventing a coil assembly from moving between a core and a pole.

According to another aspect of the present invention, there is provided a solenoid valve comprising: a hollow flange having an outer circumferential surface formed with a hydraulic port therethrough; a spool that linearly moves inside the flange and opens and closes the hydraulic port; A coil assembly housed in the housing and having one end and the other end penetrated, a tube accommodated in the coil assembly, a tube having one end and the other end penetrated, a tube inserted and coupled to one end of the tube, An armature inserted in the other end of the tube and having one end and the other end penetrated, an armature accommodated in the pole and linearly moved by an electromagnetic force generated in the coil assembly to linearly move the spool, And a bush disposed at the other end of the core, A second guide surface facing the other end of the coil assembly is formed at one end of the pole so as to prevent the coil assembly from being separated from the coil assembly, The length of the coil assembly from the first guide surface to the second guide surface is shorter than the distance between the first guide surface and the second guide surface, To prevent it from moving to the outside.

The flow preventing member is disposed between one end of the coil assembly and the first guide surface or between the other end of the coil assembly and the second guide surface.

The flow preventing member has an elastic force in the longitudinal direction of the coil assembly.

The tube is fixedly coupled to the inner circumferential surface of the coil assembly, and the flow preventing member extends from one end of the tube to a longer side than the one end of the coil assembly in the direction of the core, and contacts the first guide surface.

The flow preventive member is interposed between one end of the tube and the first guide surface.

The tube is fixedly coupled to the inner circumferential surface of the coil assembly in an insert manner.

According to the present invention, since the flow preventing member is coupled to the inside of the housing, the core and the pole contact the coil assembly to prevent the coil assembly from being broken, and the coil assembly is prevented from moving in the longitudinal direction of the tube. can do.

The flow preventing member is disposed between one end of the coil assembly and the first guide surface of the core or between the other end of the coil assembly and the second guide surface of the pole, It can be easily combined.

The flow preventing portion is made of an O-ring made of an elastic material, so that the coil assembly can be effectively prevented from moving in the longitudinal direction of the tube without being damaged by excessive compression of the coil assembly.

Wherein the tube is fixedly coupled to the inner circumferential surface of the coil assembly and the flow prevention portion is protruded from one end of the tube so that the flow prevention portion abuts against the other end of the core to effectively prevent the coil assembly from moving in the longitudinal direction of the tube. can do.

The tube is fixedly coupled to the inner circumferential surface of the coil assembly in an insert manner so that the flow preventing portion abuts against the other end of the core to more effectively prevent the coil assembly from moving in the longitudinal direction of the tube.

1 is a sectional view showing a conventional solenoid valve.
2 is a cross-sectional view of a solenoid valve according to a first embodiment of the present invention.
3 is a cross-sectional view illustrating another mounting position of the flow preventing member of the solenoid valve according to the first embodiment of the present invention.
4 is a cross-sectional view illustrating a solenoid valve according to a second embodiment of the present invention.
FIG. 5 is a cross-sectional view illustrating another mounting state of the flow preventing member and the tube of the solenoid valve according to the second embodiment of the present invention.

My 1 Embodiment

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a sectional view showing a solenoid valve according to a first embodiment of the present invention, and FIG. 3 is a sectional view showing another mounting position of a flow preventive member of a solenoid valve according to the first embodiment of the present invention.

2, the solenoid valve of the present invention includes a flange 100, a spool 200, a housing 300, a coil assembly 400, a tube 500, a core 600, A pole 700, an armature 800, a bush 900, and a flow preventing member 430. [

The flange 100 is formed in a hollow shape having a plurality of hydraulic ports 110 through which the inside and the outside of the flange 100 are communicated,

The spool 200 is formed in a cylindrical shape so that one end thereof is in contact with the elastic member 1000 and the other end thereof is in contact with the armature 800. The outer circumferential surface of the spool 200 is in contact with the inner circumferential surface of the flange 100, And is disposed so as to be linearly movable.

Accordingly, the hydraulic port 110, which communicates with the inside and the outside of the flange 100, is opened and closed by linear movement of the spool 200.

That is, the hydraulic port 110 is opened and closed by linear movement of the spool 200.

The housing 300 is preferably formed in a cylindrical shape and is coupled to the other side of the flange 100.

The coil assembly 400 is accommodated in the housing 300 and includes a bobbin 410 and a coil 420.

The bobbin 410 is preferably made of a non-magnetic material such as plastic and has a hollow cylindrical shape having one end and the other end penetrated, and a coil 420 is wound around the outer circumferential surface.

The coil 420 is wound on the outer circumferential surface of the bobbin 410. When the power is applied, an electromagnetic force is generated.

The tube 500 is accommodated in the coil assembly 400 and has one end and the other end penetrated. The core 600 and the pawls 700 are spaced apart from each other at one end and the other end, Lt; / RTI >

The core 600 is inserted through one end of the tube 500 and has a first guide surface 610 at the other end facing the end of the coil assembly 400.

The core 600 pulls the armature 800 by the electromagnetic force generated from the coil assembly 400.

The pole 700 has one end and the other end thereof inserted through and inserted into the other end of the tube 500. A second guide surface 710 is formed at one end of the pole 700 facing the other end of the coil assembly 400.

The first guide surface 610 of the core 600 and the second guide surface 710 of the pawl 700 are positioned at a predetermined distance from each other when the coil assembly 400 moves in the longitudinal direction of the tube 500, One end and the other end of the coil assembly 400 contact the first guide surface 610 of the core 600 and the second guide surface 710 of the pole 700 so that the coil assembly 400 contacts the core 600 and the other one direction of the pawl 700. As shown in Fig.

The armature 800 is accommodated in the pole 700 so as to be linearly movable and linearly moved by an electromagnetic force generated in the coil assembly 400.

More specifically, when the electromagnetic force generated in the coil assembly 400 is coupled to the core 600, the armature 800 moves in a direction in which the core 600 is disposed, The spool (200) touching one end is also pushed out.

If no electromagnetic force is generated in the coil assembly 400, the armature 800 is elastically moved in a direction in which the pole 700 is disposed by the spool 200 contacting one end.

Here, the spool 200 moves in the direction in which the armature 800 is disposed due to the elastic force of the elastic member 1000 contacting one end of the armature 800. As a result, the armature 800, which is in contact with the other end of the spool 200, Also moves in the direction in which the pole 700 is disposed.

The bushing 900 is disposed between the outer circumferential surface of the armature 800 and the inner circumferential surface of the pawl 700 so as to minimize tilting of the armature 800 in the left and right direction when the armature 800 linearly moves, Guide.

When the core 600 and the pawl 700 are press-fitted into one end and the other end of the coil assembly 400, the bobbin 410 contacts the core 600 and the pawl 700, A clearance is formed between one end of the coil assembly 400 and the first guide surface 610 or between the other end of the coil assembly 400 and the second guide surface 710.

That is, the length d1 from one end of the coil assembly 400 to the other end is shorter than the distance d2 from the first guide surface 610 to the second guide surface 710.

Accordingly, after the assembly is completed, the coil assembly 400 is repeatedly moved between the first guide surface 610 and the second guide surface 710. In order to prevent the coil assembly 400 from moving between the first end of the coil assembly 400 and the first guide surface 710, A flow preventing member 430 is mounted between the surfaces 610.

The flow preventive member 430 has an elastic force in the longitudinal direction of the coil assembly 400 and is formed of an O-ring so that one end of the coil assembly 400 and one end of the first And the guide surface 610. [0064]

The flow prevention member 430 is disposed between one end of the coil assembly 400 and the first guide surface 610 and has one end abutting against the first guide surface 610 and the other end abutting against the coil assembly 400, At least one of the ends of the coil assembly 400 and the first guide surface 610 is formed to have a thickness equal to or greater than the clearance formed between the one end of the coil assembly 400 and the first guide surface 610.

Therefore, the coil assembly 400 is prevented from moving in the longitudinal direction of the tube 500 between the first guide surface 610 and the second guide surface 710.

Although the flow preventing member 430 is mounted between one end of the coil assembly 400 and the first guide surface 610, the coil assembly 400 may be mounted on the first guide surface 610, The flow preventive member 430 may have one end connected between the other end of the coil assembly 400 and the second guide surface 710 as shown in FIG. As shown in FIG.

The flow preventing member 430 is mounted between one end of the coil assembly 400 and the first guide surface 610 or between the other end of the coil assembly 400 and the second guide surface 710 If the coil assembly 400 is prevented from moving between the first guide surface 610 and the second guide surface 710, the flow preventing member 430 may be positioned at one end and the other end of the coil assembly 400, Respectively.

More specifically, the flow preventing member 430 disposed at one end of the coil assembly 400 has one end abutting the first guide surface 610 and the other end abutting one end of the coil assembly 400, The flow preventive member 430 disposed at the other end of the coil assembly 400 has one end abutting the other end of the coil assembly 400 and the other end abutting the second guide surface 710, And between the first guide surface 610 and the second guide surface 710.

Although the flow preventing member 430 is shown as an O-ring in the drawing, the flow preventing member 430 may be configured such that when the coil assembly 400 is assembled with the first guide surface 610 and the second guide surface 610, 710, it is possible to use a plate spring or the like.

My 2 Embodiment

FIG. 4 is a cross-sectional view of a solenoid valve according to a second embodiment of the present invention, and FIG. 5 is a cross-sectional view illustrating another state in which the flow preventing member and the tube of the solenoid valve according to the second embodiment of the present invention are mounted.

The solenoid valve according to the second embodiment of the present invention includes a flange 100 ', a spool 200', a housing 300 ', a coil assembly 400' And includes a member 430 ', a tube 500', a core 600 ', a pole 700', an armature 800 ', and a bush 900'.

Hereinafter, the solenoid valve according to the second embodiment will be described. The same configuration as that of the first embodiment described above will not be described in detail so as not to obscure the gist of the present invention.

The tube 500 'is accommodated in the coil assembly 400', and has one end and the other end penetrating through the core 500 '. The core 600' and the pole 700 ' And are inserted and bonded at regular intervals.

The tube 500 'is preferably fixedly coupled to the inside of the coil assembly 400'.

Here, when the tube 500 'is fixedly coupled to the inside of the coil assembly 400', an adhesive is applied to the outer circumferential surface of the tube 500 'and the inner circumferential surface of the coil assembly 400' And the tube 500 'may be coupled to the coil 420' through a bolt connection. Preferably, the tube 500 'is inserted into the inner circumferential surface of the coil assembly 400' .

The flow preventive member 430 'extends from one end of the tube 500' to a longer side than the one end of the coil assembly 400 'in the direction of the core 600'.

More specifically, the flow preventive member 430 'is configured such that the other end of the coil assembly 400' is in close contact with the second guide surface 710 ', and one end of the coil assembly 400' Is extended from one end of the tube 500 'by a clearance formed between the guide surfaces 610'.

Accordingly, the flow preventing member 430 'extending from one end of the tube 500' abuts on the first guide surface 610 '.

Therefore, the flow preventing member 430 'is mounted between the one end of the coil assembly 400' and the first guide surface 610 ', and the outer circumferential surface of the tube 500' 'So that the coil assembly 400' is prevented from moving in the longitudinal direction of the tube 500 '.

Here, the flow preventing member 430 'extends from the tube 500' to extend toward the core 600 'longer than one end of the coil assembly 400'. However, the coil assembly 400 'Is prevented from moving between the first guide surface 610' and the second guide surface 710 ', the flow preventing member 430' is formed in a separate configuration as shown in FIG. 5 And may be inserted into one end of the tube 500 '.

As described above, according to the solenoid valve of the present invention, by inserting the flow preventing members 430 and 430 ', the cores 600 and 600' and the pawls 700 and 700 ' And the coil assembly 400 or 400 'can be prevented from moving between the first guide surfaces 610 and 610' and the second guide surfaces 710 and 710 '.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: flange 110: hydraulic port
200: spool 300: housing
400: coil assembly 410: bobbin
420: Coil 430: Flow preventing member
500: tube 600: core
610: first guide surface 700: pole
710: second guide surface 800: amateur
900: Bush 1000: Elastic member

Claims (6)

A hollow flange having an outer peripheral surface through which a hydraulic port is inserted;
A spool which linearly moves inside the flange to open and close the hydraulic port;
A housing coupled to the other side of the flange;
A coil assembly accommodated in the housing and having one end and the other end penetrated;
A tube accommodated in the coil assembly and having one end and the other end penetrated;
A core inserted and coupled to one end of the tube and having one end and the other end penetrated;
A pole inserted into the other end of the tube and having one end and the other end penetrated;
An armature accommodated in the pole and linearly moved by an electromagnetic force generated in the coil assembly to linearly move the spool;
And a bush disposed on an outer circumferential surface of the armature,
A first guide surface facing the one end of the coil assembly is formed at the other end of the core, and a second guide surface facing the other end of the coil assembly is formed at one end of the pole to prevent detachment of the coil assembly,
Wherein a length from one end of the coil assembly to the other end is shorter than a distance from the first guide surface to the second guide surface,
And a flow preventive member is mounted in the housing to prevent the coil assembly from moving in the longitudinal direction of the tube between the first guide surface and the second guide surface.
The method according to claim 1,
The flow-
Wherein the solenoid valve is disposed between one end of the coil assembly and the first guide surface or between the other end of the coil assembly and the second guide surface.
The method of claim 2,
Wherein the flow preventive member has an elastic force in the longitudinal direction of the coil assembly.
The method according to claim 1,
The tube being fixedly coupled to an inner circumferential surface of the coil assembly,
Wherein the flow preventive member is extended from one end of the tube longer than one end of the coil assembly in the direction of the core and abuts on the first guide surface.
The method according to claim 1,
The tube being fixedly coupled to an inner circumferential surface of the coil assembly,
And the flow preventive member is inserted between the one end of the tube and the first guide surface.
The method according to claim 4 or 5,
The tube may comprise:
Wherein the solenoid valve is fixedly coupled to an inner circumferential surface of the coil assembly in an insert manner.
KR20130122029A 2013-10-14 2013-10-14 Solenoid valve KR20150043056A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR20130122029A KR20150043056A (en) 2013-10-14 2013-10-14 Solenoid valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20130122029A KR20150043056A (en) 2013-10-14 2013-10-14 Solenoid valve

Publications (1)

Publication Number Publication Date
KR20150043056A true KR20150043056A (en) 2015-04-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200142252A (en) 2019-06-12 2020-12-22 한국도키멕 주식회사 Automatic assembly device of core tube for solenoid valve remanufacturing process
CN114439990A (en) * 2020-11-06 2022-05-06 优尼克株式会社 Electromagnetic valve

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200142252A (en) 2019-06-12 2020-12-22 한국도키멕 주식회사 Automatic assembly device of core tube for solenoid valve remanufacturing process
CN114439990A (en) * 2020-11-06 2022-05-06 优尼克株式会社 Electromagnetic valve
KR20220062170A (en) * 2020-11-06 2022-05-16 주식회사 유니크 Solenoid valve
KR20220123504A (en) * 2020-11-06 2022-09-07 주식회사 유니크 Solenoid valve
US11710591B2 (en) 2020-11-06 2023-07-25 Unick Corporation Solenoid actuator

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