KR101998480B1 - Variable flow solenoid valve - Google Patents

Abstract

The present invention relates to a variable solenoid valve, and more particularly, to a variable solenoid valve that includes a housing, an electromagnetic generating unit accommodated in the housing and configured to generate an electromagnetic force when a power is applied, a pole inserted in one axial direction of the electromagnetic generating unit, An armature accommodated in the inner circumferential surface of the pole and moved along an axial direction by an electromagnetic force, a spool which is provided in contact with the armature and linearly moved together with the armature, a magnetic path inserted into the other axial end of the electromagnetic generator, And a plate for coupling the core flange and the housing so as to reduce the occurrence of errors and to prevent the occurrence of errors in the core flange. Increase the electromagnetic force concentration effect, It has the effect of strengthening.

Description

Variable solenoid valve {VARIABLE FLOW SOLENOID VALVE}

The present invention relates to a variable solenoid valve, and more particularly, to a variable solenoid valve used in a hydraulic control valve (PPV) or a flow control valve (QPV) of a dual clutch transmission (DCT).

Generally, a hydraulic solenoid valve is a means for controlling the flow of fluid by installing basic components such as a plunger and a spring in the inside so that they are operated according to current application, and it is largely divided into on / off Quot; duty ".

In the dual on / off method, a constant current is applied to the coil of the solenoid valve so that the valve is opened while the plunger is operated, or only the operation of closing the valve by the repulsive force of the spring when the current is cut off is repeated. So that the fluid pressure can be controlled.

The hydraulic solenoid valve for a conventional automatic transmission includes a solenoid valve mounted on a valve body of an automatic transmission and controlling a hydraulic pressure applied to the clutch or the brake when the solenoid valve is shifted in the valve body. The solenoid valve includes an inlet, an outlet, A spool for opening and closing the fluid to be opened or closed and for discharging or shutting off the fluid to be discharged or shut off and an armature arranged closely in contact with the lower end of the spool for reciprocating motion in the axial direction, A bobbin on which the coil is wound is installed.

On the other hand, a core for connecting a magnetic field generated by the coil is installed on the upper part of the bobbin, a pole body for attracting the armature when the current is applied to the coil is provided at the lower end of the bobbin, And an armature with a spindle in the middle of the pole body.

In order to minimize the axial eccentricity of the magnetic parts (core and pole body), a ring, which is made of a non-magnetic material and has a spacer function, is inserted into the lower end of the bobbin. So that the mounted spindle stably behaves without physical interference during reciprocation in the axial direction.

A compression spring disposed between the hollow of the pole body and the bottom surface of the spindle equipped with the armature so as to push the armature upward when the current is cut off to the coil and an initial pressure to support the bottom of the compression spring and open the spool And a housing for enclosing the outer periphery of the coil and the core, and an adjusting screw screwed to the hollow of the pole body so as to be adjustable.

However, in the conventional solenoid valve having the above structure, when the space between the core and the flange is generated, it is difficult to precisely control the solenoid valve.

Therefore, it is necessary to develop a solenoid valve capable of precisely controlling the electromagnetic force and reducing the space between the components.

Korean Registered Patent No. 750034 (Registered August, 2007) Hydraulic solenoid valve for automatic transmission of vehicle

SUMMARY OF THE INVENTION It is an object of the present invention to provide a variable solenoid valve for precisely controlling a magnetic force and minimizing space between components, which is created to solve the problems of the conventional variable solenoid valve.

According to an aspect of the present invention, there is provided a variable solenoid valve including a housing, an electromagnetic generator accommodated in the housing and configured to generate an electromagnetic force when power is applied thereto, An armature accommodated in an inner circumferential surface of the pole and moved along an axial direction by an electromagnetic force, a spool which is provided in contact with the armature and is linearly moved together with the armature, A core flange which is formed in a hollow shape to form a magnetic path and into which the spool is inserted and in which a plurality of flow paths are formed so that the flow path is opened and closed in accordance with the linear movement of the spool and a plate for coupling the core flange and the housing .

The core flange may include a magnetic concentrator protruding in a conical shape along the axial direction at an end portion of the pole in order to concentrate the electromagnetic force and having an armature receiving groove formed at the shaft center so as to receive the armature .

It is also possible that the core flange includes an engagement stopper formed to protrude along the circumferential direction in the radial direction on the outer circumferential surface so as to be engaged with the plate.

At this time, the plate may be provided with a coupling groove on the inner circumferential surface so that the coupling stopper of the core flange is received, and the coupling rib may be formed on the inner circumferential surface of the coupling groove so that the core flange is coupled in an interference fit manner.

Meanwhile, the plate may have a coupling groove formed on an inner circumferential surface thereof so as to receive the coupling stopper of the core flange, and may extend along the circumferential direction on the pole direction surface so as to be fixed in a caulking manner in a state where the coupling stopper is seated in the coupling groove. A plurality of caulking grooves may be formed.

Further, the core flange and the plate may be integrally formed.

It is also possible to further include a tube provided between the core flange and the pole so as to align the core flange and the pole coaxially.

The housing includes a receiving portion formed in a cylindrical shape with one side open in an axial direction so that the electromagnetic generating portion, the pawl, and the armature are housed, and a receiving portion, It is also possible to include a clamping engagement portion formed to extend in the axial direction at one open end of the portion.

As described above, the variable solenoid valve according to the present invention has the effect of concentrating the electromagnetic force and eliminating the space between the core and the flange, thereby enabling precise control.

1 is a sectional view of a variable solenoid valve according to an embodiment of the present invention,
2 is a cross-sectional view of a core flange in a variable solenoid valve according to one embodiment of the present invention,
3 is a perspective view of a plate in a variable solenoid valve according to an embodiment of the present invention,
FIG. 4 is a perspective view illustrating a coupling of a core flange and a plate in a variable solenoid valve according to an embodiment of the present invention. FIG.
FIG. 5 is a perspective view showing a core flange and a plate integrally formed in a variable solenoid valve according to another embodiment of the present invention,
6 is a cross-sectional view illustrating a process of fixing a plate to a housing in a variable solenoid valve according to an embodiment of the present invention.

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

1, a variable solenoid valve according to an embodiment of the present invention includes a housing 100, a pole 200, an armature 300, a core flange 400, a plate 500, a spool 600, The electromagnetic generating part 800 includes a coil 810 and a bobbin 820. The coil 810 and the bobbin 820 are connected to each other by a coil 810. The coil 810 and the bobbin 820 are connected to each other. At this time, the coil 810, the bobbin 820, the pole 200 and the armature 300 are built in the housing 100, and at one axial end of the housing 100, The flange 400, the plate 500 and the spool 600 are inserted and coupled to the other end of the housing 100 in the axial direction.

The housing 100 includes a receiving portion 110, a plate seating portion 140, and a clamping coupling portion 150. At this time, the accommodating portion 110 is formed in a cylindrical shape with one side in the axial direction being opened. Further, the other side in the axial direction of the accommodating portion 110 is closed, and the pole 200 is engaged. The bobbin 820 and the coil 810 wound on the bobbin 820 are wound in the axial direction in a state in which the pole 200 is seated on the other side of the receiving portion 110 along the axial direction And the armature 300 is accommodated in the pole 200. The arm 200 is inserted into the arm 200,

The clamping coupling part 150 extends along the axial direction at one end of the receiving part 110 and is formed to have an inner diameter larger than the inner diameter of the receiving part 110. That is, the clamping engaging part 150 and the receiving part 110 are provided to have a step to form the plate seating part 140.

Accordingly, the plate seating portion 140 is formed as a ring-shaped surface facing the plate 500. [ The plate 500 is seated on the plate seating part 140 to cover the receiving part 110 and the clamping engagement part 150 is fitted to the plate 500 in the radial direction of the plate 500. [ In the circumferential direction.

The pole 200 is housed in the housing 100 and is accommodated at the other axial end of the accommodating portion 110 at all times. At this time, the pole 200 is formed to be coupled with the receiving part 110, and has a shape protruding along the circumferential direction in the axial direction so as to form a magnetic path. Therefore, the electromagnetic generating unit 800 is coupled to the outer circumferential surface of the pole 200, and the armature 300 is accommodated in the inner circumferential surface.

The armature 300 is formed in a cylindrical shape so as to be accommodated in the inner circumferential surface of the pole 200, and a drain pipe is formed therein.

1 and 2, the core flange 400 is coupled to the plate 500 to be fixed to the housing 100 and includes a flange body 410, a magnetic concentrating portion 420, A coupling stopper 440, a flow passage 450, a filter 460, a return spring 470, a pin 480, and a hollow 490. [

The flange body 410 is inserted and coupled to one side of the axial direction (the end in the direction of the pole 200) to the electromagnetic generating portion 800 and the plurality of the flow paths 450 are formed on the outer circumferential surface, And communicates with the hollow 490 formed to be reciprocatable.

The magnetic concentrator 420 protrudes in a conical shape along the axial direction at the end of the flange body 410 in the direction of the pawl 200 and the armature receiving groove 430 is formed at the shaft center. That is, the magnetic concentrating part 420 is formed along the circumferential direction on the outer periphery of the armature receiving groove 430, and the outer diameter of the magnetic concentrating part 420 is gradually decreased while extending in the direction of the pole 200.

The engaging stopper 440 protrudes radially outward from the outer circumferential surface of the flange body 410 to be engaged with the plate 500.

The flow channel 450 is formed in the flange body 410 and communicated with the hollow 490. The filter 460 is coupled to the flange body 410 and covers the flow channel 450. The return spring 470 is coupled to the other axial end of the flange body 410 and is in contact with the spool 600. The pin 480 is provided at the other axial end of the flange body 410 and is accommodated in the spool 600.

1, 3 and 4, the plate 500 is formed to fasten the core flange 400 and the housing 100, and includes a plate body 510, an engagement groove 520, A joining rib 540, and a caulking groove 550. The joining rib 540 may be formed by a plurality of grooves.

The outer diameter of the plate body 510 is larger than the inner diameter of the receiving part 110 and is smaller than the inner diameter of the clamping part 150 Less than or equal.

The coupling groove 520 is formed by inserting a surface of the plate body in the direction of the pole 200 so that the coupling stopper 440 of the core flange 400 is inserted and engaged.

At this time, on the inner circumferential surface of the coupling groove 520, the coupling ribs 540 are radially inward along the circumferential direction so that the coupling stopper 440 of the core flange 400 is fixedly coupled to the coupling groove 520 Are protruded. The fixing part 530 protrudes in the direction of the pawl 200 and the fixing stopper 440 is fixed to the fixing part 530 in a caulking manner And the caulking groove 550 is formed so as to fix the calking groove 550 to the calking groove 550.

In the present embodiment, the engaging ribs 540 may be formed in advance so that the engaging stoppers 440 are coupled to the engaging recesses 520 in an interference fit manner. The engaging ribs 540 may be formed by pressing the caulking grooves 550 radially inward while the engaging ribs 440 are fitted.

1, the spool 600 is inserted into the hollow 490 of the core flange 400 so as to reciprocate linearly, one axial end of the spool 600 is engaged with the pin 480, The end portion is in contact with the armature 300.

The tube 700 is formed in a cylindrical shape and is provided on the inner circumferential surface of the bobbin 820 and is provided between the core flange 400 and the pole 200. At this time, the tube 700 contacts the outer circumferential surface of the core flange 400 inserted into the inner circumferential surface of the bobbin 820 and the outer circumferential surface of the pole 200. Thus, the core flange 400 and the pawl 200 are coaxially aligned by the tube 700.

The electrical terminal 900 is connected to the electromagnetic generating unit 800 through the housing 100.

The effect of the variable solenoid valve according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4 and 6, wherein a magnetic path is formed by introducing the core flange 400, (600) and the armature (300) to open and close the channel (450).

In the conventional variable solenoid valve, a magnetic path is formed by a separate core, and the spool and the armature move linearly in separate flanges. As a result, a space may be generated between the core and the flange, resulting in an error in the applied electromagnetic force, and an error may occur in the linear movement path of the spool and the armature. However, according to the present invention, a magnetic path is formed only by the core flange 400, and the armature 300 and the spool 600 are linearly moved by the magnetic path formed by the core flange 400, There is no space (interval) that can be made.

According to the present invention, the effect of concentrating the electromagnetic force by the magnetic concentration portion 420 of the core flange 400 is enhanced. In the conventional variable solenoid valve, a separate core and flange are provided, and the concentrating effect of the electromagnetic force is deteriorated because the materials of the core and the flange are different. On the contrary, in the present invention, since the core flange 400 is formed of the same material, concentration effect of the electromagnetic force is improved.

In the present invention, the fastening force between the core flange 400 and the plate 500 is improved by the engagement stopper 440, the coupling rib 540, and the caulking groove 550, The fixing force of the plate 500 and the housing 100 is improved by the fixing part 140 and the clamping part 150.

When the engaging stopper 440 of the core flange 400 is coupled to the engaging rib 540 in an interference fit manner, the fixing force is increased. Further, when the engaging stopper 440 and the engaging portion 520 are hermetically sealed by caulking through the caulking groove 550, the fixing force increases.

6, the plate 500 is fitted and seated in the plate seating part 140 in a state where the clamping engagement part 150 is extended along the axial direction, and the plate seating part 140 When the plate 500 is seated, the clamping engaging part 150 is tightened by a clamp so that the fixing force of the plate 500 and the housing 100 is increased. Accordingly, the overall coupling force between the housing 100, the plate 500, and the core flange 400 is improved.

Therefore, according to the variable solenoid valve according to the embodiment of the present invention, the gap between the core and the flange existing in the conventional variable solenoid valve is eliminated to reduce the occurrence of errors, increase the electromagnetic force concentration effect, .

FIG. 5 shows a variable solenoid valve according to another embodiment of the present invention. In this embodiment, the core flange 400 and the plate 500 are integrally formed to form a core flange cover 1400. The core flange cover 1400 includes a flange body 1410, a magnetic concentrating portion 1420, an armature receiving groove 1430 (not shown), a housing coupling portion 1440, and a flow passage 1450. The flange body 1410, the magnetic concentrating part 1420, the armature receiving groove 1430 and the flow path 1450 are formed in the flange body 410 of the variable solenoid valve according to the embodiment of the present invention ), The magnetic concentrating portion 420, the armature receiving groove 430, and the flow path 450, detailed description thereof will be omitted.

In this embodiment, since the housing coupling portion 1440 is directly coupled to the housing, the coupling force between the core flange cover 1400 and the housing can be further enhanced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that the modification or the modification is possible by the person.

 It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100: Housing
110:
140: Plate seating part
150: Clamping part
200: Paul
300: amateur
400: core flange
410, 1410: flange body
420, 1420: magnetic concentrating part
430, 1430: amateur acceptance home
440: Coupling stopper
450, 1450: Euro
500: plate
510: plate body
520: engaging groove
540:
550: caulking groove
600: spool
700: tube
800: Electromagnetic generator
810: Coil
820: Bobbin
900: Electrical terminal
1400: Core flange cover
1440:

Claims (8)

housing;
An electromagnetic generating unit accommodated in the housing and configured to generate an electromagnetic force when power is applied;
A pole inserted into one axial side of the electromagnetic generating unit to form a magnetic path;
An armature accommodated in an inner peripheral surface of the pole and moved along an axial direction by an electromagnetic force;
A spool which is provided to be in contact with the armature and is linearly moved together with the armature;
A core flange which is inserted into the other side of the electromagnetic generating part in the axial direction to form a magnetic path, is formed in a hollow shape to insert the spool, and has a plurality of flow paths formed therein so that the flow path is opened and closed according to a linear movement of the spool; And
A plate for fastening the core flange and the housing;
Lt; / RTI >
Wherein the core flange comprises:
A coupling stopper protruding along the circumferential direction in the radial direction on the outer circumferential surface so as to be coupled with the plate;
/ RTI >
The plate may comprise:
Wherein a coupling groove is formed on an inner circumferential surface of the core flange so as to receive the coupling stopper of the core flange and a coupling rib is formed on an inner circumferential surface of the coupling groove so that the core flange is coupled in an interference fit manner.
housing;
An electromagnetic generating unit accommodated in the housing and configured to generate an electromagnetic force when power is applied;
A pole inserted into one axial side of the electromagnetic generating unit to form a magnetic path;
An armature accommodated in an inner peripheral surface of the pole and moved along an axial direction by an electromagnetic force;
A spool which is provided to be in contact with the armature and is linearly moved together with the armature;
A core flange which is inserted into the other side of the electromagnetic generating part in the axial direction to form a magnetic path, is formed in a hollow shape to insert the spool, and has a plurality of flow paths formed therein so that the flow path is opened and closed according to a linear movement of the spool; And
A plate for fastening the core flange and the housing;
Lt; / RTI >
Wherein the core flange comprises:
A coupling stopper protruding along the circumferential direction in the radial direction on the outer circumferential surface so as to be coupled with the plate;
/ RTI >
The plate may comprise:
A plurality of caulking grooves are formed along the circumferential direction on the pole direction surface so that the engaging stopper is formed in the inner circumferential surface so that the engaging stopper of the core flange is accommodated, And a solenoid valve.
3. The method according to claim 1 or 2,
Wherein the core flange comprises:
A magnetic concentrator protruding in the shape of a cone along the axial direction at the pole direction end to concentrate the electromagnetic force and having an armature receiving groove formed at the shaft center to receive the armature;
And a solenoid valve.
delete delete delete 3. The method according to claim 1 or 2,
A tube disposed between the core flange and the pawl to align the core flange and the pawl coaxially;
Further comprising: a variable solenoid valve.
3. The method according to claim 1 or 2,
The housing includes:
A receiving portion formed in a cylindrical shape with one side open in the axial direction so that the electromagnetic generating portion, the pole, and the armature are embedded; And
A clamping engaging portion formed axially at an open end of the receiving portion to fasten the plate with a fastener while the plate is inserted;
And a solenoid valve.

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