KR102215742B1 - Solenoid valve and manufacturing method of the same, and terminal unit included in solenoid valve - Google Patents

Abstract

A solenoid valve capable of automating the manufacturing process, a method of manufacturing a solenoid valve, and a terminal unit included in the solenoid valve are provided.
To this end, the solenoid valve according to the present invention has a hollow formed in the longitudinal direction and a first flange protruding in one direction is formed at one end in the longitudinal direction, and a second flange protruding in one direction at the other end in the longitudinal direction A formed inner bobbin, a coil wound around the outer circumference of the inner bobbin between the first flange and the second flange, a plunger inserted into the hollow and moved in the longitudinal direction by a magnetic field generated from the coil, and the first 1 A first plug portion disposed in the flange and protruding to the outside of the first flange is formed at one end, and a first coil connection portion protruding to the outside of the first flange at the other end and connected to one end of the coil The formed first terminal and a second coil connection portion disposed in the first flange and protruding to the outside of the first flange at one end and connected to the other end of the coil, and a first fuse connection formed at the other end A second terminal, a third terminal disposed in the first flange and having a second plug portion protruding to the outside of the first flange at one end and a second fuse connection portion formed at the other end, and in the first flange And a fuse disposed and connecting the first fuse connection part and the second fuse connection part.

Description

Solenoid valve and its manufacturing method and terminal unit included in the solenoid valve {SOLENOID VALVE AND MANUFACTURING METHOD OF THE SAME, AND TERMINAL UNIT INCLUDED IN SOLENOID VALVE}

The present invention relates to a solenoid valve, a manufacturing method thereof, and a terminal unit included in the solenoid valve, and more particularly, to a solenoid valve having a fuse, a manufacturing method thereof, and a terminal unit included in the solenoid valve.

In general, solenoid valves are electronic valves for opening and closing flow paths such as water, refrigerant, and air or changing the size of the flow path.

The solenoid valve comprises a bobbin having a hollow formed in the longitudinal direction, a coil wound around the outer circumference of the bobbin, and a plunger inserted into the hollow and reciprocated in the longitudinal direction of the bobbin by a magnetic field generated from the coil. do.

The flow path may be opened or closed by the reciprocating movement of the plunger, or the size of the flow path may be varied.

The solenoid valve generates heat by a current applied to the coil, and includes a fuse for blocking the current when the heat reaches a predetermined temperature.

Republic of Korea Patent Publication No. 10-2011-0035157 (published on April 6, 2011) (hereinafter referred to as'conventional technology') discloses a'electronic water supply valve' equipped with a fuse.

In the prior art, a fuse is installed in a coil wound around the bobbin, and when the temperature of the coil reaches a predetermined temperature or higher, the fuse is blown and power supply to the coil is cut off.

However, in the prior art, the fuse is manually soldered to the coil and coupled to the coil. Therefore, the operator has to pay attention not to cause a short-circuit defect due to soldering to the coil, and thus, there is a problem that it takes a long time.

In addition, in the prior art, since only one end of a terminal for supplying power to the coil protrudes to one side of the bobbin, and the other end of the terminal is disposed inside the bobbin, the coil is attached to the other end of the terminal. There was also a problem that the connection was difficult.

Republic of Korea Patent Publication No. 10-2011-0035157 (2011.04.06. Publication date)

The problem to be solved by the present invention is to provide a solenoid valve capable of automating a manufacturing process, a method of manufacturing a solenoid valve, and a terminal unit included in the solenoid valve.

Another problem to be solved by the present invention is to provide a solenoid valve and a method of manufacturing a solenoid valve that can easily connect a coil and a terminal, and a terminal unit included in the solenoid valve.

The subject of the present invention is not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, the solenoid valve according to the present invention includes an inner bobbin, a coil, a plunger, a first terminal, a second terminal, a third terminal, and a fuse. The inner bobbin is formed with a hollow in the longitudinal direction. The inner bobbin has a first flange protruding in one direction at one end portion in the longitudinal direction. The inner bobbin has a second flange protruding in one direction at the other end in the longitudinal direction. The coil is wound around the outer circumference of the inner bobbin between the first flange and the second flange. The plunger is inserted into the hollow and is moved longitudinally by a magnetic field generated by the coil. The first terminal is disposed within the first flange. At one end of the first terminal, a first plug portion protruding outward from the first flange is formed. At the other end of the first terminal, a first coil connection part protruding out of the first flange is formed. The first coil connection part is connected to one end of the coil. The second terminal is disposed within the first flange. At one end of the second terminal, a second coil connection part protruding out of the first flange is formed. The second coil connection part is connected to the other end of the coil. A first fuse connection is formed at the other end of the second terminal. The third terminal is disposed within the first flange. At one end of the third terminal, a second plug portion protruding out of the first flange is formed. A second fuse connection is formed at the other end of the third terminal. The fuse is disposed within the first flange. The fuse connects the first fuse connection part and the second fuse connection part.

The first plug part, the second plug part, the first coil connection part, and the second coil connection part may protrude from the first flange in one direction.

The first plug part and the second plug part may protrude from one side of the first flange in the other direction. The first coil connection part and the second coil connection part may protrude in one direction from the other side of the first flange.

The first fuse connection part and the second fuse connection part may extend in one direction crossing the first plug part, the second plug part, the first coil connection part, and the second coil connection part.

An end of the first fuse connector and an end of the second fuse connector may be disposed to protrude from the first flange in one direction.

The first terminal may have an arc-shaped first curved portion formed between the first plug portion and the first coil connection portion. The first curved portion may form a part of a circle and may be disposed outside the hollow. The second terminal may have an arc-shaped second curved portion formed between the second coil connection part and the first fuse connection part. The second curved portion may be spaced apart from the first curved portion to form a part of the circle, and may be disposed outside the hollow. The third terminal may have a third curved portion formed between the second plug portion and the second fuse connection portion. The third curved portion may be spaced apart from the first curved portion and the second curved portion to form a part of the circle, and may be disposed outside the hollow.

The fuse may be welded to the first fuse connection part and the second fuse connection part.

The solenoid valve according to the present invention may further comprise an outer bobbin. The outer bobbin may accommodate the inner bobbin therein. The first plug part and the second plug part may protrude to the outside of the outer bobbin.

One end of the inner bobbin may protrude from the first flange in a longitudinal direction of the inner bobbin. One end of the inner bobbin may pass through one surface of the outer bobbin.

The solenoid valve according to the present invention may further include a shading coil and a shading coil guide. The shading coil may be formed in a ring shape. The shading coil guide may be inserted into the hollow through the other end of the inner bobbin. The shading coil guide may have an insertion groove into which the shading coil is inserted on one surface facing the plunger. The shading coil guide may have a guide protrusion inserted into the shading coil on a bottom surface of the insertion groove. The other end of the inner bobbin may protrude in the longitudinal direction of the inner bobbin than the second flange. The other end of the inner bobbin may penetrate the other surface of the outer bobbin.

The solenoid valve according to the present invention may further comprise a bracket. The bracket may be formed in a rectangular cylindrical shape with both sides crossing the longitudinal direction of the inner bobbin open. At least a portion of the outer bobbin may be accommodated in the bracket. A coupling protrusion protruding to the other end of the inner bobbin may be formed on the other surface of the shading coil guide. A first insertion hole into which one end of the inner bobbin is inserted may be formed in the bracket. A second insertion hole into which the coupling protrusion is inserted may be formed in the bracket.

The first flange may be composed of a flange body and a flange cap. The first terminal, the second terminal, the third terminal, and the fuse may be mounted on one surface of the flange body. The flange cap may be coupled to the flange body to cover the first terminal, the second terminal, the third terminal, and the fuse.

The first terminal, the second terminal, the third terminal, and the fuse may be insert-injected with the inner bobbin in a mold.

The method of manufacturing a solenoid valve according to the present invention includes a fuse welding step, a bobbin injection step, a terminal cutting step, and a coil winding step. In the fuse welding step, an end of the first coil connection part and an end of the second coil connection part are connected by a first connection part, and an end of the first fuse connection part and an end of the second fuse connection part are connected by a second connection part. After preparing a terminal member which is connected and integrally formed with the first terminal, the second terminal, and the third terminal, a fuse is welded to the first fuse connection part and the second fuse connection part, and the first The fuse connection part and the second fuse connection part are connected. In the bobbin injection step, by insert-injecting the terminal member to which the fuse is welded with the inner bobbin in a mold, the first plug part, the second plug part, the first coil connection part, the second coil connection part, the The first fuse connection part, the second fuse connection part, the first connection part, and the second connection part protrude outward of the first flange. In the terminal cutting step, the first coil connection part and the second coil connection part are cut to remove the first connection part, and the first fuse connection part and the second fuse connection part are cut to remove the second connection part. In the coil winding step, after winding a coil around the outer circumference of the inner bobbin between the first flange and the second flange, one end of the coil is connected to the first coil connector, and the other end of the coil is connected to the second Connect to the coil connection.

The method of manufacturing a solenoid valve according to the present invention may further comprise a coil protection step and a bobbin protection step after the coil winding step. In the coil protection step, the coil wound around the outer circumference of the inner bobbin may be wrapped with a protective tape. In the bobbin protection step, a resin is molded outside the inner bobbin to accommodate the inner bobbin in an outer bobbin in which the resin is cured, and the first plug part and the second plug part may protrude to the outside of the outer bobbin. have.

The terminal unit according to the present invention is used for a solenoid valve. The terminal unit is composed of a terminal member and a fuse. The terminal member includes a first terminal, a second terminal, a third terminal, a first connection part, and a second connection part. A first plug part is formed at one end of the first terminal, and a first coil connection part connected to one end of the coil is formed at the other end of the first terminal. A second coil connection part connected to the other end of the coil is formed at one end of the second terminal, and a first fuse connection part is formed at the other end of the second terminal. A second plug part is formed at one end of the third terminal, and a second fuse connection part is formed at the other end of the third terminal. The first connection part connects an end of the first coil connection part and an end of the second coil connection part. The second connection part connects an end of the first fuse connection part and an end of the second fuse connection part. The fuse is welded to the first fuse connection part and the second fuse connection part to connect the first fuse connection part and the second fuse connection part.

Details of other embodiments are included in the detailed description and drawings.

According to the method of manufacturing the solenoid valve and the solenoid valve according to the present invention and the terminal unit included in the solenoid valve, since the fuse is provided inside the first flange formed at one end of the inner bobbin, the manufacturing process of the solenoid valve can be automated. There is a possible effect.

In addition, since the first coil connection portion formed on the first terminal and the second coil connection portion formed on the second terminal are disposed to protrude to the outside of the first flange, one end of the coil from the outer side of the inner bobbin is the first coil connection portion. It can be easily connected to, and there is an effect that the other end of the coil can be easily connected to the second coil connection part from the outside of the inner bobbin.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing a solenoid valve according to a first embodiment of the present invention,
FIG. 2 is a perspective view showing the solenoid valve shown in FIG. 1 excluding a bracket;
3 is an exploded perspective view of the solenoid valve shown in FIG. 1,
Figure 4 is a side view of the solenoid valve shown in Figure 1,
5 is a side cross-sectional view of the solenoid valve shown in FIG. 1;
6 is a plan view showing a state in which a first terminal, a second terminal, a third terminal, and a fuse are installed on a first flange, excluding a flange cap;
7 is an exploded perspective view showing a solenoid valve according to a second embodiment of the present invention,
8 is a plan sectional view showing a solenoid valve according to a second embodiment of the present invention;
9 is a block diagram showing a procedure according to a method of manufacturing a solenoid valve according to a second embodiment of the present invention;
10A is a plan view showing after the fuse welding step shown in FIG. 9;
10B is a perspective view showing after the bobbin injection step shown in FIG. 9;
10C is a perspective view showing after the terminal cutting step, the coil winding step and the coil protection step shown in FIG. 9;
10D is a perspective view showing the bobbin protection step shown in FIG. 9.

Hereinafter, a method of manufacturing a solenoid valve and a solenoid valve according to embodiments of the present invention and a terminal unit included in the solenoid valve will be described with reference to the drawings.

1 is a perspective view showing a solenoid valve according to a first embodiment of the present invention, FIG. 2 is a perspective view showing the solenoid valve shown in FIG. 1 excluding a bracket, and FIG. 3 is an exploded perspective view of the solenoid valve shown in FIG. 4 is a side view of the solenoid valve shown in FIG. 1, and FIG. 5 is a side cross-sectional view of the solenoid valve shown in FIG. 1.

1 to 5, the solenoid valve according to the first embodiment of the present invention includes an inner bobbin 10, a coil 20, a plunger 30, a first terminal 41, and a first terminal. 2 terminal 42, a third terminal 43, a fuse 50, an outer bobbin 60, a shading coil 70, a shading coil guide 80, and a bracket 90. I can.

The inner bobbin 10 may have a hollow 15 formed in the longitudinal direction. The hollow 15 may be formed in a circular bar shape.

The inner bobbin 10 may have a first flange 11 protruding in one direction at one end portion in the longitudinal direction. The first flange 11 may protrude throughout the inner bobbin 10 in the circumferential direction.

The inner bobbin 10 may have a second flange 12 protruding in one direction at the other end in the longitudinal direction. The second flange 12 may be formed to protrude all over the inner bobbin 10 in the circumferential direction.

In the drawing, the inner bobbin 10 may be formed to be long vertically, the first flange 11 may be formed on the upper end of the inner bobbin 10, and the second flange 12 is It may be formed at the lower end.

Hereinafter, for understanding of the description, the longitudinal direction of the inner bobbin 10 is in the vertical direction, one end of the inner bobbin 10 is an upper end of the inner bobbin 10, and one end of the inner bobbin 10 is the inner bobbin 10 ), the other end of the inner bobbin 10 will be described as the lower end of the inner bobbin 10, and the other end of the inner bobbin 10 will be described as the lower end of the inner bobbin 10.

In addition, each of the plunger 30, the outer bobbin 60, the shading coil guide 80 and the bracket 90, one end to the upper end, the other end to the lower end, one side to the upper side, the other side to the lower side, one side to the upper surface As, the other side will be described as a lower surface.

The first flange 11 extends from the arc-shaped portion 11A forming a part of the annular shape and the arc-shaped portion 11A, but the width becomes narrower as the distance from the arc-shaped portion 11A becomes narrower, and is the most in the arc-shaped portion 11A. A side surface of the far end may include a plate-shaped portion 11B formed in a plane.

The side surface of the arc-shaped portion 11A may be formed in a curved surface. The side surface of the plate-shaped portion 11B may be configured with at least one plane. That is, among the circumferential surfaces of the first flange 11, a surface corresponding to the arc-shaped portion 11A may be formed as a curved surface, and a surface corresponding to the plate-shaped portion 11B may be formed as at least one plane. In this embodiment, the side surface of the plate-shaped portion 11B is formed in three planes.

Since the side surface of the plate-shaped portion 11B includes at least one plane, when the inner bobbin 10 is inserted into the outer bobbin 60, the inner bobbin 10 may not be rotated.

The second flange 12 may be formed in an annular shape.

The inner bobbin 10 may be formed in a cylindrical shape except for the first flange 11 and the second flange 12.

The coil 20 may be wound around the outer circumference of the inner bobbin 10 between the first flange 11 and the second flange 12. The coil 20 may be formed of a conductor through which current passes. For example, the coil 20 may be formed of copper. The coil 20 may generate a magnetic field when current is applied.

The coil 20 may be wound around the outer circumference of the inner bobbin 10 between the first flange 11 and the second flange 12. In the drawing, the coil 20 is not shown in the form of a wire, but this schematically shows the overall shape of the coil 20 wound around the outer circumference of the inner bobbin 10 between the first flange 11 and the second flange 12. It is because it appeared as.

After wrapping the coil 20 wound around the outer circumference of the inner bobbin 10 with a protective tape 25, a resin may be molded on the outer side of the inner bobbin 10, and the molded resin is cured to cure the outer bobbin 60 ) Can be.

The protective tape 25 surrounding the coil 20 and the outer bobbin 60 can absorb an impact applied to the coil 20 and prevent moisture from penetrating into the coil 20.

The plunger 30 may be formed in a circular bar shape. The plunger 30 may be inserted into the hollow 15 and disposed to protrude from the upper end of the inner bobbin 10. The plunger 30 may be formed to be elongated in the vertical direction.

The plunger 30 may be moved vertically by a magnetic field generated by the coil 20.

For example, when a positive current is input to the first plug portion 41A of the first terminal 41 and a negative current is input to the second plug portion 43A of the third terminal 43, the plunger 30 ) Can be moved upwards.

In addition, when a negative current is input to the first plug portion 41A of the first terminal 41 and a positive current is input to the second plug portion 43A of the third terminal 43, the plunger 30 It can be moved downwards.

The plunger 30 is moved up and down to open and close a separately provided flow path, and the size of the flow path can be adjusted.

For example, when the solenoid valve according to the embodiment of the present invention is installed in the water purifier, the plunger 30 may be moved upward to close the water passage provided in the water purifier, and moved downward to open the water passage provided in the water purifier. have.

The first terminal 41, the second terminal 42, the third terminal 43, and the fuse 50 may be disposed inside the first flange 11. The first flange 11 may be composed of a flange body 11C and a flange cap 11D. A first terminal 41, a second terminal 42, a third terminal 43, and a fuse 50 may be mounted on one surface of the flange body 11C. The flange cap 11D may be coupled to the flange body 11C to cover the first terminal 41, the second terminal 42, the third terminal 43 and the fuse 50.

After injecting a molten resin into the mold, and injecting the inner bobbin 10 in which the resin is cured first, the first terminal 41, the second terminal 42, the third terminal 43, and the fuse 50 ) Is placed on the upper side of the flange body 11C, and then the upper side of the flange body 11C is covered with a flange cap 11D, so that the first terminal 41, the second terminal 42 and the third terminal 43 ) And the fuse 50 may be installed inside the first flange 11.

The outer bobbin 60 may accommodate the inner bobbin 10 therein. The outer bobbin 60 may prevent penetration of foreign matter and moisture into the outer bobbin 60 from the outside. The outer bobbin 60 is insert-injected into the inner bobbin 10 and the mold, so that the inner bobbin 10 and the outer bobbin 60 may be integrally formed. The inner bobbin 10 and the outer bobbin 60 may be formed separately.

The outer bobbin 60 may accommodate the inner bobbin 10 in the outer bobbin 60.

The upper end 16 of the inner bobbin 10 may protrude above the first flange 11. The upper end 16 of the inner bobbin 10 may penetrate the upper surface of the outer bobbin 60. The upper end 16 of the inner bobbin 10 may be formed to protrude upward on the upper surface of the flange cap 11D.

The shading coil 20 may be formed in a ring shape. The shading coil guide 80 may be inserted into the hollow 15 through the lower end of the inner bobbin 10. The shading coil guide 80 may have an insertion groove 81 into which the shading coil 20 is inserted on an upper surface facing the plunger 30. The shading coil guide 80 may have a guide protrusion 82 inserted into the shading coil 20 on the bottom surface of the insertion groove 81.

The lower end 17 of the inner bobbin 10 may protrude below the second flange 12. The lower end 17 of the inner bobbin 10 may penetrate the lower surface of the outer bobbin 60.

The bracket 90 may be formed in a rectangular cylindrical shape with open both sides crossing the vertical direction. At least a portion of the outer bobbin 60 may be accommodated in the bracket 90.

A first insertion hole 95 into which the upper end 16 of the inner bobbin 10 is inserted may be formed in the bracket 90. The first insertion hole 95 may be formed on the upper side of the bracket 90.

A coupling protrusion 83 protruding to the lower end of the inner bobbin 10 may be formed on the lower surface of the shading coil guide 80.

A second insertion hole 96 into which the coupling protrusion 83 is inserted may be formed in the bracket 90. The second insertion hole 96 may be formed on the lower side of the bracket 90.

The bracket 90 may include a bracket body 91 and a bracket cover 92.

The bracket body 91 may include a bottom plate portion 91A in which the second insertion hole 96 is formed, and both side plate portions 91B extending upward from both ends of the bottom plate portion 91A. Both side plate portions 91B may be disposed opposite to each other.

The first insertion hole 95 may be formed in the bracket cover 92. The bracket cover 92 may cover between the ends of the both side plate portions 91B, and may be coupled to the ends of the both side plate portions 91B. The bracket cover 92 may be disposed opposite to the bottom plate portion 91A.

6 is a plan view showing a state in which a first terminal, a second terminal, a third terminal, and a fuse are installed on a first flange, excluding a flange cap.

1 to 6, a first plug part 41A may be formed at one end of the first terminal 41 to protrude to the outside of the first flange 11. The first plug part 41A may protrude from one side of the first flange 11 in the other direction.

At the other end of the first terminal 41, a first coil connection part 41B is formed to protrude to the outside of the first flange 11. The first coil connection part 41B may be connected to one end of the coil 20. The operator can easily connect one end of the coil 20 to the first coil connection part 41B from the outside of the inner bobbin 10.

The first coil connection part 41B may protrude in one direction from the other side of the first flange 11. The first coil connection part 41B extends in a direction opposite to the first plug part 41A and may protrude from the first flange 11 in one direction.

An arc-shaped first curved portion 41C may be formed in the first terminal 41 between the first plug portion 41A and the first coil connection portion 41B. The first curved portion 41C may form a part of a circle and may be disposed outside the hollow 15.

At one end of the second terminal 42, a second coil connection 42A may be formed to protrude to the outside of the first flange 11. The second coil connection part 42A may be connected to the other end of the coil 20. The operator can easily connect the other end of the coil 20 to the second coil connection 42A from the outside of the inner bobbin 10.

The second coil connection part 42A may protrude in one direction from the other side of the first flange 11. The second coil connection part 42A may extend in a direction opposite to the second plug part 43A to be described later, and may protrude from the first flange 11 in one direction.

The first coil connection part 41B and the second coil connection part 42A may protrude from the first flange 11 in the same direction. The first coil connection part 41B and the second coil connection part 42A may be arranged in parallel.

A first fuse connection part 42B may be formed at the other end of the second terminal 42. The first fuse connection part 42B may extend in one direction crossing the second coil connection part 42A. An end of the first fuse connector 42B may be disposed to protrude from the first flange 11 in one direction.

The second terminal 42 may have an arc-shaped second curved portion 42C formed between the second coil connection portion 42A and the first fuse connection portion 42B. The second curved portion 42C may be spaced apart from the first curved portion 41C to form a part of the circle and may be disposed outside the hollow 15.

At one end of the third terminal 43, a second plug portion 43A protruding out of the first flange 11 may be formed. The second plug portion 43A may protrude from one side of the first flange 11 to the other side.

The first plug part 41A and the second plug part 43A may protrude from the first flange 11 in the same direction. The first plug portion 41A and the second plug portion 43A may be disposed in parallel.

The first plug portion 41A and the second plug portion 43A may be disposed to protrude from an end far from the arc-shaped portion 11A of the plate-shaped portion 11B of the first flange 11.

The upper end of the outer bobbin 60 may be formed in a shape corresponding to the first flange 11. An end of a portion of the upper end of the outer bobbin 60 corresponding to the plate-shaped portion 11B of the first flange 11 may be disposed to protrude to the outside of the bracket 90 through an opened surface of the bracket 90. .

When the inner bobbin 10 is accommodated in the outer bobbin 60, the first plug part 41A and the second plug part 43A protrude to the outside of the bracket 90 among the upper ends of the outer bobbin 60 It can be disposed protruding from the end of the part.

One side of the outer bobbin 60 from which the first plug part 41A and the second plug part 43A protrude may protrude to the outside of the bracket 90 through an opened surface of the bracket 90.

A second fuse connection part 43B may be formed at the other end of the third terminal 43. The second fuse connection part 43B may extend in one direction crossing the second plug part 43A. An end of the second fuse connection part 43B may be disposed to protrude from the first flange 11 in one direction.

The first fuse connection part 42B and the second fuse connection part 43B may protrude from the first flange 11 in the same direction. The first fuse connection part 42B and the second fuse connection part 43B may be disposed in parallel.

The first fuse connection part 42B and the second fuse connection part 43B cross the first plug part 41A, the second plug part 43A, the first coil connection part 41B, and the second coil connection part 42A. It may extend in one direction.

The third terminal 43 may have a third curved portion 43C formed between the second plug portion 43A and the second fuse connection portion 43B. The third curved portion 43C may be spaced apart from the first curved portion 41C and the second curved portion 42C to form a part of the circle and may be disposed outside the hollow 15.

The fuse 50 may connect the first fuse connector 42B and the second fuse connector 43B. The fuse 50 may generate heat due to current resistance, and may be cut off when the generated heat is higher than a predetermined temperature to block the current applied to the coil 20.

At least one of the upper surface of the flange body 11C and the lower surface of the flange cap 11D has a groove into which the first terminal 41, the second terminal 42, the third terminal 43, and the fuse 50 are inserted. Can be formed. In addition, in order to allow the fuse 50 to be easily blown, a groove into which the fuse 50 is inserted forms a predetermined clearance space in at least one of the upper surface of the flange body 11C and the lower surface of the flange cap 11D. This is desirable.

The fuse 50 may be welded to the first fuse connection part 42B and the second fuse connection part 43B. One end of the fuse 50 may be welded to the first fuse connector 42B, and the other end of the fuse 50 may be welded to the second fuse connector 43B.

When the inner bobbin 10 is accommodated in the outer bobbin 60, the first plug part 41A and the second plug part 43A may be disposed to protrude to the outside of the outer bobbin 60. The first plug part 41A and the second plug part 43A may be inserted into a groove of a separately provided outlet to receive current from the outlet.

In the inner circumferential surface of the outer bobbin 60, a first groove 60A into which an end of the first coil connector 41B is inserted, a second groove 60B into which an end of the second coil connector 42A is inserted, and A third groove 60C into which an end of the 1 fuse connection part 42B is inserted and a fourth groove 60D into which an end of the second fuse connection part 43B is inserted may be formed.

Since the end of the first coil connection part 41B is inserted into the first groove 60A, the first terminal 41 is not rotated and the position can be fixed.

Since the end of the second coil connection 42A is inserted into the second groove 60B, and the end of the first fuse connection 42B is inserted into the third groove 60C, the second terminal 42 is not rotated. Without the position can be fixed.

Since the end of the second fuse connector 43B is inserted into the fourth groove 60D, the third terminal 43 may not be rotated and the position may be fixed.

7 is an exploded perspective view showing a solenoid valve according to a second embodiment of the present invention, and FIG. 8 is a plan sectional view showing a solenoid valve according to a second embodiment of the present invention. Here, the same reference numerals are assigned to the same reference numerals as those of the first embodiment, and detailed descriptions thereof will be omitted, and only different points will be described.

7 and 8, it can be seen that the solenoid valve according to the second embodiment of the present invention is different from the solenoid valve according to the first embodiment described above.

That is, in the first embodiment described above, in order to arrange the first terminal 41, the second terminal 42, the third terminal 43, and the fuse 50 inside the first flange 11, the first The flange 11 is composed of a flange body 11C and a flange cap 11D. However, in the second embodiment, the first terminal 41, the second terminal 42, the third terminal 43, and the fuse 50 are insert-injected with the inner bobbin 10 in the mold, so that the first terminal 41, the second terminal 42, the third terminal 43, and the fuse 50 are disposed inside the first flange 11.

When the inner bobbin 10 is injected into the mold, after inserting the first terminal 41, the second terminal 42, the third terminal 43 and the fuse 50 into the mold, By injecting a molten resin to form the inner bobbin 10, the first terminal 41, the second terminal 42, the third terminal 43, and the fuse 50 are inserted into the inner bobbin 10 Can eject. When the first terminal 41, the second terminal 42, the third terminal 43 and the fuse 50 are inserted into the inner bobbin 10 and injection is completed, the first terminal 41 and the second terminal 42 ), the third terminal 43 and the fuse 50 may be disposed in the first flange 11.

9 is a block diagram showing a procedure according to a method of manufacturing a solenoid valve according to a second embodiment of the present invention.

9, the method of manufacturing a solenoid valve according to the second embodiment of the present invention includes a fuse welding step (S1), a bobbin injection step (S2), a terminal cutting step (S3), and a coil winding step ( S4), a coil protection step (S5), and a bobbin protection step (S6) may be included. A detailed description of this will be described with reference to FIGS. 10A to 10D.

10A is a plan view showing the fuse welding step shown in FIG. 9.

9 and 10A, in the fuse welding step (S1), after preparing the terminal member 40, the fuse 50 is welded to the first fuse connection part 42B and the second fuse connection part 43B, The first fuse connection part 42B and the second fuse connection part 43B may be connected to 50. In this way, a configuration in which the fuse 50 is welded to the terminal member 40 may be referred to as a terminal unit used for a solenoid valve.

The terminal member 40 may be a member that becomes the first terminal 41, the second terminal 42, and the third terminal 43 in the future. That is, in the terminal member 40, the end of the first coil connection part 41B and the end of the second coil connection part 42A are connected by the first connection part 44, and the ends of the first fuse connection part 42B and the first 2 The end of the fuse connection part 43B may be connected by the second connection part 45 so that the first terminal 41, the second terminal 42, and the third terminal 43 may be integrally formed.

10B is a perspective view showing after the bobbin injection step shown in FIG. 9.

9 and 10B, in the bobbin injection step (S2), the terminal member 40 to which the fuse 50, which is the terminal unit, is welded may be insert-injected with the inner bobbin 10 in a mold. That is, after inserting the terminal member 40 to which the fuse 50 is welded into the mold, a molten resin may be injected into the mold. Here, the resin may be a resin that becomes the inner bobbin 10 after being injected into the mold. The terminal member 40 to which the fuse 50 is welded may be insert-injected with the inner bobbin 10 in the mold to be installed in the first flange 11 of the inner bobbin 10.

When the terminal member 40 to which the fuse 50 is welded is insert-injected with the inner bobbin 10 in the mold, the first plug part 41A, the second plug part 43A, the first coil connection part 41B, The second coil connection part 42A, the first fuse connection part 42B, the second fuse connection part 43B, the first connection part 44 and the second connection part 45 are disposed to protrude to the outside of the first flange 11. In addition, the remaining portion of the terminal member 40 and the fuse 50 may be disposed inside the first flange 11.

When the inner bobbin 10 is injected into the mold, only one terminal unit in which the terminal member 40 to which the fuse 50 is welded is integrally coupled is inserted into the mold, so that the first terminal 41, Compared to the case where the second terminal 42, the third terminal 43, and the fuse 50 are separated from each other and inserted into the mold, the first terminal 41, the second terminal 42, and the third The terminal 43 and the fuse 50 can be accurately positioned at a set position in the first flange 11.

10C is a perspective view showing a terminal cutting step, a coil winding step, and a coil protection step shown in FIG. 9.

9 and 10C, in the terminal cutting step (S3), the first coil connection part 41B and the second coil connection part 42A may be cut to remove the first connection part 44, and the first fuse connection part The second connection part 45 may be removed by cutting the 42B and the second fuse connection part 43B. When the first connection portion 44 and the second connection portion 45 are removed, the terminal member 40 may be divided into a first terminal 41, a second terminal 42, and a third terminal 43.

In the coil winding step (S4), after the coil 20 is wound around the outer circumference of the inner bobbin 10 between the first flange 11 and the second flange 12, one end of the coil 20 is connected to the first coil. It can be connected to (41B), the other end of the coil 20 can be connected to the second coil connection (42A).

In the coil protection step (S5), the coil 20 wound around the outer circumference of the inner bobbin 10 may be wrapped with a protective tape 25.

10D is a perspective view showing the bobbin protection step shown in FIG. 9.

Referring to FIGS. 9 and 10D, in the bobbin protection step S6, a resin is molded outside the inner bobbin 10 to accommodate the inner bobbin 10 in the outer bobbin 60 in which the resin is cured. When a resin is molded outside the inner bobbin 10 and the inner bobbin 10 is accommodated in the outer bobbin 60 in which the resin is cured, the inner bobbin 10 and the outer bobbin 60 may be integrated.

When the inner bobbin 10 is accommodated in the outer bobbin 60, the first plug portion 41A and the second plug portion 43A may be disposed to protrude to the outside of the outer bobbin 60.

In addition, when the inner bobbin 10 is accommodated in the outer bobbin 60, the upper end 16 of the inner bobbin 10 may penetrate the upper surface of the outer bobbin 60, and the lower end 17 of the inner bobbin 10 ) May penetrate the lower surface of the outer bobbin 60.

3 and 5, after inserting the shading coil 70 into the insertion groove 81 of the shading coil guide 80, the shading coil guide 80 is inserted into the lower end 17 of the inner bobbin 10. Can be inserted through the hollow (15).

Thereafter, the outer bobbin 60 may be inserted into the bracket body 91. When the outer bobbin 60 is inserted into the bracket body 91, the coupling protrusion 83 formed in the shading coil guide 80 may be inserted into the second insertion hole 96 formed in the bracket body 91.

Thereafter, after inserting the plunger 30 into the hollow 15 through the upper end 16 of the inner bobbin 10, the bracket cover 92 may be coupled to the upper end of the bracket body 91. When the bracket cover 92 is coupled to the upper end of the bracket body 91, the upper end 16 of the inner bobbin 10 may be inserted into the first insertion hole 95 formed in the bracket cover 92. In addition, when the bracket cover 92 is coupled to the upper end of the bracket body 91, the upper end of the plunger 30 may be disposed to protrude upward from the bracket cover 92.

As described above, according to the method of manufacturing the solenoid valve and the solenoid valve according to the embodiments of the present invention, since the fuse 50 is provided inside the first flange 11 of the inner bobbin 10, the solenoid valve Automation of the manufacturing process becomes possible.

In addition, since the first coil connection portion 41B formed on the first terminal 41 and the second coil connection portion 42A formed on the second terminal 42 are disposed to protrude to the outside of the first flange 11, the inner One end of the coil 20 from the outside of the bobbin 10 can be easily connected to the first coil connection part 41B, and the other end of the coil 20 from the outside of the inner bobbin 10 is a second coil connection part 42A. Can be easily connected to.

Those of ordinary skill in the art to which the present invention pertains will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

10: inner bobbin 11: first flange
11C: flange body 11D: flange cap
12: second flange 15: hollow
20: coil 25: protective tape
30: plunger 40: terminal member
41: first terminal 41A: first plug part
41B: first coil connection part 41C: first curved part
42: second terminal 42A: second coil connection
42B: first fuse connection part 42C: second curved part
43: third terminal 43A: second plug part
43B: second fuse connection part 43C: third curved part
44: first connection portion 45: second connection portion
50: fuse 60: outer bobbin
70: shading coil 80: shading coil guide
81: insertion groove 82: guide protrusion
83: coupling protrusion 90: bracket
91: bracket body 92: bracket cover
95: first insertion hole 96: second insertion hole

Claims (16)

An inner bobbin having a hollow formed in the longitudinal direction, a first flange protruding in one direction at one end in the longitudinal direction, and a second flange protruding in one direction at the other end in the longitudinal direction;
A coil wound around the outer circumference of the inner bobbin between the first flange and the second flange;
A plunger inserted into the hollow and moved in the longitudinal direction by a magnetic field generated by the coil;
A first plug portion disposed in the first flange and protruding to the outside of the first flange is formed at one end, and a first plug portion protruding to the outside of the first flange is formed at the other end to be connected to one end of the coil. 1 a first terminal formed with a coil connection portion;
A second terminal disposed in the first flange, having a second coil connection part protruding to the outside of the first flange at one end to be connected to the other end of the coil, and having a first fuse connection part formed at the other end;
A third terminal disposed in the first flange, having a second plug portion protruding to the outside of the first flange at one end, and a second fuse connection at the other end; And
A fuse disposed in the first flange and connecting the first fuse connection part and the second fuse connection part. The method according to claim 1,
The first plug part, the second plug part, the first coil connection part, and the second coil connection part protrude in one direction from the first flange. The method according to claim 2,
The first plug part and the second plug part protrude in one direction of the first flange,
The first coil connection part and the second coil connection part solenoid valve protruding in one direction from the other side of the first flange. The method of claim 3,
The first fuse connection part and the second fuse connection part extend in one direction crossing the first plug part, the second plug part, the first coil connection part, and the second coil connection part. The method of claim 4,
A solenoid valve wherein an end of the first fuse connection part and an end of the second fuse connection part protrude from the first flange in one direction. The method of claim 4,
The first terminal forms a part of a circle between the first plug part and the first coil connection part and has an arc-shaped first curved part disposed outside the hollow,
The second terminal is spaced apart from the first curved part to form a part of the circle between the second coil connection part and the first fuse connection part, and an arc-shaped second curved part disposed outside the hollow is formed,
The third terminal is spaced apart from the first curved part and the second curved part between the second plug part and the second fuse connection part to form a part of the circle, and an arc-shaped third disposed outside the hollow. Solenoid valve with a curved portion. The method according to claim 1,
The fuse is a solenoid valve welded to the first fuse connection part and the second fuse connection part. The method according to claim 1,
Further comprising; an outer bobbin accommodating the inner bobbin therein,
A solenoid valve protruding from the outer bobbin of the first plug part and the second plug part. The method of claim 8,
One end of the inner bobbin protrudes from the first flange in the longitudinal direction of the inner bobbin,
A solenoid valve having one end of the inner bobbin penetrating through one surface of the outer bobbin. The method of claim 9,
A ring-shaped shading coil,
A shading coil having an insertion groove inserted into the hollow through the other end of the inner bobbin and inserted into the shading coil on one surface facing the plunger, and a guide protrusion inserted into the shading coil on a bottom surface of the insertion groove Including more guides,
The other end of the inner bobbin protrudes in the longitudinal direction of the inner bobbin than the second flange,
A solenoid valve through which the other end of the inner bobbin passes through the other surface of the outer bobbin. The method of claim 10,
The inner bobbin further comprises a square-cylindrical bracket with open sides crossing the longitudinal direction,
At least a part of the outer bobbin is accommodated in the bracket,
A coupling protrusion protruding to the other end of the inner bobbin is formed on the other surface of the shading coil guide,
The bracket has a first insertion hole into which one end of the inner bobbin is inserted and a second insertion hole into which the coupling protrusion is inserted. The method according to claim 1,
The first flange,
A flange body on which the first terminal, the second terminal, the third terminal, and the fuse are seated on one surface,
A solenoid valve coupled to the flange body and including a flange cap covering the first terminal, the second terminal, the third terminal, and the fuse. The method according to claim 1,
The first terminal, the second terminal, the third terminal, and the fuse are solenoid valves that are insert-injected with the inner bobbin in a mold. An inner bobbin having a hollow formed in the longitudinal direction, a first flange protruding in one direction at one end in the longitudinal direction, and a second flange protruding in one direction at the other end in the longitudinal direction;
A coil wound around the outer circumference of the inner bobbin between the first flange and the second flange;
A plunger inserted into the hollow and moved in the longitudinal direction by a magnetic field generated by the coil;
A first plug portion disposed in the first flange and protruding to the outside of the first flange is formed at one end, and a first plug portion protruding to the outside of the first flange is formed at the other end to be connected to one end of the coil. 1 a first terminal formed with a coil connection portion;
A second terminal disposed in the first flange, having a second coil connection part protruding to the outside of the first flange at one end to be connected to the other end of the coil, and having a first fuse connection part formed at the other end;
A third terminal disposed in the first flange, having a second plug portion protruding to the outside of the first flange at one end, and a second fuse connection at the other end; And
In the method of manufacturing a solenoid valve comprising a fuse disposed in the first flange and connecting the first fuse connection part and the second fuse connection part,
An end of the first coil connection part and an end of the second coil connection part are connected by a first connection part, and an end of the first fuse connection part and an end of the second fuse connection part are connected by a second connection part. After preparing a terminal member in which the first terminal, the second terminal and the third terminal are integrally formed, a fuse is welded to the first fuse connection part and the second fuse connection part, and the first fuse connection part and the first fuse connection part 2 fuse welding step of connecting the fuse connection part;
The terminal member to which the fuse is welded is insert-injected with the inner bobbin in a mold, so that the first plug part, the second plug part, the first coil connection part, the second coil connection part, the first fuse connection part, A bobbin injection step of protruding the second fuse connection part, the first connection part, and the second connection part outward of the first flange;
A terminal cutting step of cutting the first coil connection part and the second coil connection part to remove the first connection part, and cutting the first fuse connection part and the second fuse connection part to remove the second connection part; And
After winding a coil around the outer circumference of the inner bobbin between the first flange and the second flange, one end of the coil is connected to the first coil connection, and the other end of the coil is connected to the second coil connection. A method of manufacturing a solenoid valve comprising a; coil winding step. The method of claim 14,
After the coil winding step,
A coil protection step of wrapping the coil wound on the outer circumference of the inner bobbin with a protective tape; And
A bobbin protection step of molding a resin outside the inner bobbin to accommodate the inner bobbin in the outer bobbin cured with the resin, and protruding the first plug part and the second plug part to the outside of the outer bobbin; further Method of manufacturing a solenoid valve including. In the terminal unit used for a solenoid valve,
A first terminal having a first plug part formed at one end and a first coil connection part connected to one end of the coil at the other end, and a second coil connection part connected to the other end of the coil at one end and the other end A second terminal having a first fuse connection part formed thereon, a third terminal having a second plug part formed at one end and a second fuse connection part formed at the other end, and an end of the first coil connection part and the end of the second coil connection part A terminal member including a first connection part connecting the first connection part and a second connection part connecting an end of the first fuse connection part and an end of the second fuse connection part; And
A fuse welded to the first fuse connection part and the second fuse connection part to connect the first fuse connection part and the second fuse connection part.

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