KR101742177B1 - Solenoid Valve having Stopper Limiting Stroke of Amature - Google Patents

Solenoid Valve having Stopper Limiting Stroke of Amature Download PDF

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Publication number
KR101742177B1
KR101742177B1 KR1020150056070A KR20150056070A KR101742177B1 KR 101742177 B1 KR101742177 B1 KR 101742177B1 KR 1020150056070 A KR1020150056070 A KR 1020150056070A KR 20150056070 A KR20150056070 A KR 20150056070A KR 101742177 B1 KR101742177 B1 KR 101742177B1
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KR
South Korea
Prior art keywords
solenoid
stopper
armature
valve
solenoid valve
Prior art date
Application number
KR1020150056070A
Other languages
Korean (ko)
Other versions
KR20160125196A (en
Inventor
김형준
손솔애
김나영
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.)
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Application filed by 주식회사 현대케피코 filed Critical 주식회사 현대케피코
Priority to KR1020150056070A priority Critical patent/KR101742177B1/en
Publication of KR20160125196A publication Critical patent/KR20160125196A/en
Application granted granted Critical
Publication of KR101742177B1 publication Critical patent/KR101742177B1/en

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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
    • F16K31/0644—One-way valve
    • 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
    • F16K31/0658—Armature and valve member being one single element
    • F16K31/0662—Armature and valve member being one single element with a ball-shaped valve member
    • 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

It is an object of the present invention to provide a solenoid valve that compensates for the reduced length of the magnetic body portion of the armature by maintaining the length of the magnetic body portion of the armature and, instead, interposing a stopper structure of inexpensive material, have.
According to the solenoid valve according to the embodiment of the present invention, since the structure for reducing the length of the magnetic body portion of the armature is adopted, the manufacturing cost of the solenoid valve can be reduced.

Description

[0001] The present invention relates to a solenoid valve having a stopper for limiting the stroke of an armature,

An embodiment of the present invention relates to a solenoid valve, and more particularly to a solenoid valve having a stop that limits the stroke of an armature.

The contents described in this section merely provide background information on the embodiment of the present invention and do not constitute the prior art.

BACKGROUND ART [0002] In recent years, researches for weight reduction and cost reduction in an automatic control solenoid valve have been actively conducted.

The solenoid valve is a device that opens and closes the channel through the armature by moving the armature by the solenoid magnetic field when the power is applied.

In this solenoid valve, the armature moves in one direction by the solenoid magnetic field and in the opposite direction by the elastic force of the return spring.

On the other hand, the distance between the position where the armature opens the flow passage and the position where the armature closes, that is, the stroke, must maintain the set length.

Therefore, in order to maintain the set stroke of the armature, the conventional technique is designed so that the axial length of the magnetic body portion of the armature extends longer than necessary than the appropriate length corresponding to the number of turns of the coil.

Since the magnetic material portion of such an amateur is expensive, if the length of the magnetic material portion is increased, the manufacturing cost of the product increases and the weight of the product increases.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to reduce the length of a magnetic body portion of an armature and to replace the magnetic body portion of an armature with an inexpensive stopper structure, And the solenoid valve maintains the stroke required for the armature movement.

It is another object of the present invention to provide a solenoid valve capable of reducing the manufacturing cost of assembled parts assembled in a solenoid valve and reducing the manufacturing cost.

The technical object of the present invention is not limited to the above-mentioned technical objects and other technical objects which are not mentioned can be clearly understood by those skilled in the art from the following description will be.

According to an aspect of the present invention, there is provided a solenoid valve including a supply port through which a fluid flows, a control port through which fluid supplied from the supply port is discharged under a controlled pressure, And a valve unit having an oil passage connecting the control port and an opening and closing member for opening and closing the oil passage.

The solenoid unit may include a solenoid unit disposed at one side of the valve unit and forming a solenoid magnetic field when power is applied.

In addition, an armature installed in the solenoid portion and moving in one direction by the solenoid magnetic field may be included.

A contact guide may be provided on the opposite side of the valve unit with the solenoid portion interposed therebetween, and a terminal terminal for receiving a control signal from the outside.

And a non-magnetic stopper disposed inside the solenoid portion and disposed on one side of the armature in the axial direction, the non-magnetic stopper limiting the stroke of the armature.

Meanwhile, the stopper may be coupled to one end of the armature and move together with the armature according to the embodiment. According to another embodiment, the stopper may be formed integrally with the contact guide to limit the stroke of the armature.

As described above, according to the solenoid valve according to the embodiment of the present invention, since the structure for reducing the length of the magnetic body portion of the armature is adopted, the manufacturing cost of the solenoid valve can be reduced.

In addition, the volume and weight of the solenoid valve can be reduced by reducing the number of turns of the coil.

In addition, the effects of the present invention have various effects such as excellent durability according to the embodiments, and such effects can be clearly confirmed in the description of the embodiments described later.

1 shows a conventional solenoid valve.
2 shows a state in which the solenoid valve according to the present invention closes the flow path.
3 shows a state in which the solenoid valve according to the present invention opens the flow path.
4 shows a contact guide included in a solenoid valve according to the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to exemplary drawings. However, this is not intended to limit the scope of the invention.

It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In addition, the size and shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms specifically defined in consideration of the constitution and operation of the present invention are only for explaining the embodiments of the present invention, and do not limit the scope of the present invention.

1 shows a conventional solenoid valve.

2 and 3 show an embodiment of a solenoid valve according to the present invention.

Fig. 2 shows a state in which the solenoid valve according to the present invention closes the flow path, and Fig. 3 shows an opened state.

4 shows a contact guide included in a solenoid valve according to the present invention.

The solenoid valve 1 according to the present invention may include a solenoid 24, an armature 21, and a contact guide 31.

That is, according to the present embodiment, the solenoid valve 1 includes a supply port 10 through which fluid is supplied and a control port 18 through which the fluid supplied from the supply port 10 is discharged at a controlled pressure, A flow path connecting the supply port 10 and the control port 18, and a valve unit having an opening / closing member 19 for opening / closing the flow path. Here, the opening and closing member 19 may be in a ball shape.

The solenoid unit 24 may include a solenoid unit 24 disposed on one side of the valve unit to generate a solenoid magnetic field when power is applied thereto. The solenoid unit 24 may include an armature 21 installed in the solenoid unit 24 and moving in one direction X by the solenoid magnetic field.

Further, it may include a contact guide 31 provided on the opposite side of the valve portion with the solenoid portion 24 therebetween, and including a terminal terminal 31a for receiving a control signal from the outside, for example, a TCU .

The stopper 32 may be located inside the solenoid 24 and may be disposed on one side of the armature 21 in the axial direction to limit the stroke of the armature 21. Here, the axial direction may mean the direction of the axis P.

According to the embodiment, the supply port 10 may be formed in the axial direction of the solenoid valve 1 and the control port 18 may be formed in the radial direction. A discharge port 18a may be formed radially from the control port 18 in a position spaced apart along the axial direction, similar to the control port 18. [

The supply port 10 may have a large diameter portion 11 and a small diameter portion 14 which is disposed axially with the large diameter portion 11 and in which the opening and closing member 19 is located.

A protruding portion protruding inward can be formed at one side of the small diameter portion 14. The valve seat 16 may refer to a portion of the surface forming the protrusion contacting the opening and closing member 19. A valve bore 17 may be formed at the center of the protrusion. One surface of the protrusion including the valve seat 16 may include an inclined surface 15 that is inclined so that the opening and closing member 19 is guided to the center of the valve bore 17. [

The return spring 20 may be provided on the large diameter portion 11 to prevent the opening and closing member 19 from being separated from the small diameter portion 14 and to push the opening and closing member 19 in the opposite direction. The return spring 20 may include a disc shape. The return spring 20 may be attached to the inner diameter of the large-diameter portion 11 with its rim.

The large-diameter portion 11 may include a first large-diameter portion 12 and a second large-diameter portion 13 having a smaller diameter than the first large-diameter portion 12, And a return spring 20 may be attached to the extended surface 11a extending to the second large-diameter portion 13.

The filter 20a for filtering the foreign matter contained in the fluid supplied to the supply port 10 according to the embodiment may be disposed axially with the return spring 20. [

The opening and closing member 19 may cooperate with the valve seat 16 to open or close the flow passage. The opening and closing member 19 may be located inside the small-diameter portion 14. The opening and closing member 19 is seated on the valve seat 16 so as to close the flow path and can release the flow path from the valve seat 16.

When the flow path is opened, the fluid can flow along the flow path formed by the inner surface of the small diameter portion 14 and the outer surface of the opening and closing member 19. The introduced fluid passes through the valve bore 17, 18, and when the flow path is closed, the control port is connected to the discharge port 18a, and the fluid can be discharged to the discharge port 18a.

On the other hand, the solenoid portion 24 includes a coil 25 for generating a solenoid magnetic field, a bobbin 26 to which the coil 25 is wound, and a bobbin 26 surrounding the bobbin 26 to form a magnetic path of the solenoid magnetic field A flux disk 27, a coil housing 28, a pole disk 29, and a pole bushing 30.

The armature 21 includes a bushing 23 moving in one direction X in response to a solenoid magnetic field generated in the solenoid portion 24 according to the embodiment and a bushing 23 installed axially in the bushing 23, And a rod 22 that moves together with the rod. One end 22a of the rod 22 can be in contact with the opening and closing member 19 through the pole bushing 30 and the valve bore 17. [

The contact guide 31 may be provided at one side thereof with a coupling part for coupling with a connector for transmitting a control signal so that the solenoid part 24 forms a solenoid magnetic field. Inside the contact guide 31, a terminal for electrically connecting the connector and the coil 25 The terminal 31a can be interposed. The contact guide 31 may be formed by an injection molding method.

When power is applied to the solenoid valve 1, the solenoid portion 24 forms a magnetic field, and the bushing 23 can move in the one direction X in response to the solenoid magnetic field. The rod 22 provided on the bushing 23 can move together with the bushing 23. One end 22a of the rod 22 can pass through the valve bore 17 to disengage the opening and closing member 19 from the valve seat 16. [

The supply pressure of the fluid flowing into the supply port 10 is directed in the opposite direction Y to the one direction X. Therefore, when the armature 21 moves in one direction X by the solenoid magnetic field, (X) against the elastic force of the valve seat (20), and the opening / closing member (19) can be released from the valve seat (16).

On the other hand, when the solenoid valve 1 is powered off, the solenoid magnetic field formed by the solenoid 24 disappears and the return spring 20 pushes the opening and closing member 19 in the opposite direction Y, ). When the return spring 20 pushes the opening and closing member 19 in the opposite direction Y to move the opening and closing member 19, the one end 22a of the rod 22 is pushed to move the bushing 23 in the opposite direction Y Can be moved.

The pole bushing 30, the armature 21, and the stopper 32 may be disposed axially inside the bobbin 26. [ That is, the bobbin 26 has a cylindrical inner surface, and the pole bushing 30, the bushing 23, and the stopper 32 may be arranged in the axial direction in the bobbin 26. The pole bushing 30 serves to suck the armature 21 and may be fixedly mounted on the inner diameter of the bobbin 26. [ The bushing 23 can be movably installed at a position adjacent to one end of the pole bushing 30. [ The outer diameter of the bushing 23 is smaller than the inner diameter of the bobbin 26. A rod 22 may be fixedly installed at one end of the bushing 23. The rod 22 may be installed through the inner hole of the pole bushing 30. A stopper (32) may be disposed at a position adjacent to the other end of the bushing (23).
Referring to FIG. 2, the pole disk 29 is formed with a hole 29a at the center thereof so that the stopper 32 can be inserted therein.

The stopper 32 can serve to limit the stroke of the armature 21. According to the embodiment, the stopper 32 may be interposed between the armature 21 and the contact guide 31. The shape of the stopper 32 may be a hollow cylindrical shape according to the embodiment. The stopper 32 may be made of resin, and the stopper 32 may be made of plastic injection molding.

The ratio of the axial length of the armature 21 and the stopper 32 in this embodiment can be determined according to the axial length of the pole bushing 30 and the number of turns of the coil 25. [ The designer can set the number of turns of the coil 25 and the axial length of the pole bushing 30 to determine the ratio of the axial length B of the armature 21 to the axial length C of the stopper 32 have.

Depending on the embodiment, the stopper 32 may be coupled with the armature 21 to move together as the armature 21 moves. According to the embodiment, the stopper 32 may be press-fitted into one end of the armature 21. According to another embodiment, the stopper 32 can be coupled with the armature 21 in an insert injection manner. The diameter of the armature 21 is smaller than the inner diameter of the bobbin 26. The diameter of the stopper 32 may be similar to or smaller than the diameter of the armature 21 when the stopper 32 is engaged with the armature 21 and moves with the armature 21. [

When the stopper 32 is coupled to the armature 21, when the solenoid valve 1 is powered, the armature 21 can be moved in the one direction X by the solenoid magnetic field. At this time, 21 along with one direction (X). When the solenoid valve 1 is powered off, the solenoid magnetic field is extinguished and the armature 21 can move in the opposite direction Y. At this time, the stopper 32 is moved in the opposite direction Y together with the armature 21 Can be moved.

2 to 4, according to the embodiment, the stopper 32 may be formed integrally with the contact guide 31. That is, the contact guide 31 may be manufactured by injection molding. In this case, the stopper 32 may be integrally injection molded with the contact guide 31 in a shape protruding from one side of the contact guide 31.

When the stopper 32 and the contact guide 31 are integrally formed, the contact guide 31 can be installed by pressing the stopper 32 into one end of the solenoid 24. In this case, the diameter of the stopper 32 may be similar to or larger than the bore diameter of the bobbin 26. According to the embodiment, one end of the stopper 32 may include a tapered shape 32a so as to be easily press-fitted into the inner diameter of the solenoid 24.

In the case where the stopper 32 and the contact guide 31 are integrally formed, when the power source is applied and the armature 21 moves in the one direction X or the power source is shut off, the armature 21 moves in the opposite direction Y The stopper 32 does not move because it is attached to the contact guide 31. [

The conventional solenoid valve has a shape in which the length A of the bushing 23 is formed to be long toward the contact guide 31a along the axial direction (see FIG. 1).

The number of turns of the coil 25 wound on the bobbin 26 determines the magnitude of the magnetic force of the solenoid magnetic field and can appropriately set the length of the bushing 23 in relation to the number of turns of the coil 25. However, the length of the bushing 23 is generally longer than the appropriate number of turns compared to the number of turns of the coil 25. The reason for this is to limit the stroke S of the armature 21. That is, the distance S to which the armature 21 moves can be regarded as the stroke S in order to open and close the oil passage. In order to open and close the oil passage, the stroke S must be maintained at a predetermined length. A) must be longer than necessary.

The bushing 23 is made of magnetic material and is expensive in material. Therefore, the length of the bushing 23 may be maintained only to a degree that it can move to a designed pressure in response to the solenoid magnetic field in relation to the number of turns of the coil 25, and there is no need to design the bushing 23 longer.

The present embodiment reduces the unnecessary length C of the bushing 23 and replaces the length C of the bushing 23 with the length C of the stopper 32 instead of the length B of the bushing 23, There is an advantage that the length S can be ensured. Since the material of the stopper () is an inexpensive resin, the manufacturing cost of the product is lowered.

A conventional solenoid valve employing the structure of the contact guide 31a in which the stopper does not protrude slides the contact guide 31a in the radial direction of the solenoid valve in order to install the contact guide 31 on one side of the solenoid portion 24 .

In this embodiment, however, the contact guide 31 is installed in the solenoid portion 24 in such a manner that the contact guide 31 is pushed in the axial direction rather than sliding in the radial direction, so that the solenoid portion 24 and the contact guide 31 There is a solid advantage.

Since the magnitude of the magnetic field of the solenoid magnetic field can be set to the extent that the armature 21 having the reduced axial length B can be moved, the number of turns of the coil 25 necessary for forming the solenoid magnetic field can be reduced There is an advantage.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: Solenoid valve 10: Supply port
11: large-diameter part 12: first large-
13: second large neck part 14: small neck part
15: slope 16: valve seat
17: valve bore 18: control port
18a: exhaust port 19: opening / closing member
20: return spring 21: amateur
22: rod 23: bushing
24: solenoid part 25: coil
26: Bobbin 27: Flux disk
28: coil housing 29: pole disk
30: Pole bushing 31: Contact guide
31a: terminal terminal 32: stopper

Claims (12)

A control port for discharging the fluid supplied from the supply port at a controlled pressure; a flow path for connecting the supply port and the control port; and an opening / closing member for opening / closing the flow path A valve portion;
A solenoid disposed at one side of the valve and forming a solenoid magnetic field when power is applied;
An armature installed in the solenoid portion and moving in one direction by the solenoid magnetic field;
A contact guide provided on the opposite side of the valve unit with the solenoid portion interposed therebetween, and including a terminal terminal for receiving a control signal from the outside; And
A non-magnetic stopper positioned inside the solenoid portion and axially disposed on one axial side of the armature, the non-magnetic stopper restricting the stroke of the armature;
, ≪ / RTI &
The solenoid unit includes a coil for generating the solenoid magnetic field, a bobbin to which the coil is wound, a flux disk disposed around the bobbin to form a magnetic path of the solenoid magnetic field, a coil housing, A pole disk having a hole in the center thereof, and a pole bushing,
Wherein the stopper protrudes from the contact guide in the axial direction and extends through the center hole of the pole disk,
Wherein one end of the stopper includes a tapered shape for facilitating press-fitting into the center hole of the pole disk
And a solenoid valve. delete The method according to claim 1,
Wherein a material of the stopper includes a resin material. delete The method according to claim 1,
And the stopper is press-fitted into the center hole of the pole disk. The method according to claim 1,
The stopper is connected to the contact guide Wherein the solenoid valve is formed by a solenoid valve. delete delete The method according to claim 1,
Wherein one end of the stopper includes a tapered shape to facilitate press-fitting into the center hole of the pole disk. delete The method according to claim 1,
Wherein said bobbin, said armature, and said stopper are disposed along the axial direction within said bobbin. 12. The method of claim 11,
Wherein the ratio of the axial length of the armature to the stopper is determined according to the axial length of the pole bushing and the number of turns of the coil.
KR1020150056070A 2015-04-21 2015-04-21 Solenoid Valve having Stopper Limiting Stroke of Amature KR101742177B1 (en)

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KR1020150056070A KR101742177B1 (en) 2015-04-21 2015-04-21 Solenoid Valve having Stopper Limiting Stroke of Amature

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Application Number Priority Date Filing Date Title
KR1020150056070A KR101742177B1 (en) 2015-04-21 2015-04-21 Solenoid Valve having Stopper Limiting Stroke of Amature

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KR101742177B1 true KR101742177B1 (en) 2017-06-15

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003287152A (en) * 2002-03-28 2003-10-10 Denso Corp Solenoid valve
JP2008504493A (en) * 2004-06-26 2008-02-14 ローベルト　ボツシユ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Timing valve
KR101093448B1 (en) * 2011-07-15 2011-12-19 주식회사 유니크 Oil control valve
KR101232435B1 (en) * 2011-10-18 2013-02-12 주식회사 현대케피코 Solenoid valve for auto transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003287152A (en) * 2002-03-28 2003-10-10 Denso Corp Solenoid valve
JP2008504493A (en) * 2004-06-26 2008-02-14 ローベルト　ボツシユ　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Timing valve
KR101093448B1 (en) * 2011-07-15 2011-12-19 주식회사 유니크 Oil control valve
KR101232435B1 (en) * 2011-10-18 2013-02-12 주식회사 현대케피코 Solenoid valve for auto transmission

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