JP2018179120A - Solenoid valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solenoid valve where a body pipe assembly and a drive device can be fixed by inserting a pin into their contact part, without using a separate elastic member.SOLUTION: A solenoid valve 1 is configured to electrify a hollow cylindrical solenoid to suction a plunger 60 and move a valve body 75. The solenoid valve is characterized in that a coil assembly 2 having the solenoid and a body pipe assembly 3 are fixed by a clip 91 mounted laterally, the body pipe assembly having a flare pipe 50 on a slide inner surface of which the plunger 60 slides, and assembled into a body 70; the clip 91 has a leaf spring 93 configured to energize the coil assembly 2 in a body pipe assembly 3 direction.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a solenoid valve that draws a movable core to move a valve by energizing a hollow cylindrical solenoid.

Conventionally, for example, as shown in Patent Document 1, the solenoid portion 10 (coil assembly) and the valve portion 20 (body-pipe assembly) are fixed by welding to the upper end of the hollow portion of the guide pipe 6 of the valve portion 20. The iron core 5 was penetrated to the hollow hole of the solenoid part 10, and was connected with the retaining ring at the upper end. At this time, a wave washer is inserted between the solenoid unit 10 and the valve unit 20 to bias the solenoid unit 10 upward.
However, in the conventional method, there is a problem that the number of parts increases, and since the connecting portion is provided on the upper portion of the solenoid portion 10, there is a problem that it can not be applied in a structure in which the fixed iron core does not penetrate the solenoid portion.

  In Patent Document 2, the drive unit 30 and the valve main body 10 are fitted while inserting the shaft portion 32 into the drive unit 30 (coil assembly), and the drive is performed in a state where the outer edge portion of the elastic membrane unit 22 is deformed. In order to insert a non-spring-shaped U-shaped pin member 40 into the second attachment hole 38 of the device 30 and the first attachment hole 18 of the valve body 10, the drive device 30 and the valve body 10 are separated from each other , Is biased by an elastic member.

Patent 2955511 gazette Patent No. 5819550

However, the solenoid valve described in Patent Document 2 has the following problem.
That is, since an elastic member is required in addition to the pin member 40 which is a fixing tool, the problem that the number of parts increases is not solved.
Also, when the shaft portion 32 is inserted into the drive device 30, the pin must be inserted in a state in which the elastic member 37b is elastically deformed, but when the pin can not be inserted, the drive device 30 in either direction. Since it can not be seen from the outside whether it can insert a pin if it moves, operation of inserting a pin was complicated.

  The present invention is intended to solve the above-mentioned problems, and requires an elastic member which is a separate member when inserting and fixing a pin in the contact portion of the body and pipe assembly and the coil assembly. Aims to provide a non-magnetic valve.

In order to solve the said subject, the solenoid valve of this invention has the following structures.
(1) A solenoid valve for attracting a movable core to move a valve body by energizing a hollow cylindrical solenoid, having a coil assembly having a solenoid and a pipe on which the movable core slides on the inner surface. The body-pipe assembly assembled to the body is fixed by a laterally mounted clip, and the clip has a leaf spring portion for biasing the coil assembly in the direction of the body-pipe assembly It features.

(2) In the solenoid valve according to (1), the body and pipe assembly is provided with a stuffing collar for mounting, and the coil assembly is formed by a core of magnetic material core which forms a magnetic circuit surrounding the coil. The flange portion is provided, and the plate spring portion is characterized by being mounted between the stuffing ridge portion and the core ridge portion.
(3) In the solenoid valve according to (2), the clip body of the clip is in contact with the stuffing ridge portion, the plate spring portion is provided with a triangular convex portion, and the apex of the triangular convex portion is in the core ridge portion It is characterized in that it is in contact.

The solenoid valve of the present invention has the following actions and effects.
(1) A solenoid valve for attracting a movable core to move a valve body by energizing a hollow cylindrical solenoid, having a coil assembly having a solenoid and a pipe on which the movable core slides on the inner surface. The body-pipe assembly assembled to the body is fixed by a laterally mounted clip, and the clip has a leaf spring portion for biasing the coil assembly in the direction of the body-pipe assembly Since the coil assembly and the body / pipe assembly can be connected only by the clip having the spring property, the number of parts can be reduced.

(2) In the solenoid valve according to (1), the body and pipe assembly is provided with a stuffing collar for mounting, and the coil assembly is formed by a core of magnetic material core which forms a magnetic circuit surrounding the coil. The invention is characterized in that the plate spring portion is provided between the stuffing ridge portion and the core ridge portion, and the core inner ridge portion of the lower core of the coil assembly, and the body / pipe assembly are provided. The number of parts can be reduced because connection can be made only with a clip having springiness by using the buttocks of a three-dimensional stuffing.
In addition, since the clip can be easily mounted in the space formed by the core ridge extending inward from the core toward the stuffing and the stuffing ridge extending outward from the stuffing toward the core, the solenoid valve assembly can be assembled. Workability can be improved.

(3) In the solenoid valve according to (2), the clip body of the clip is in contact with the stuffing ridge portion, the plate spring portion is provided with a triangular convex portion, and the apex of the triangular convex portion is in the core ridge portion Since it is characterized in that it abuts, the coil assembly can be performed because the plurality of (four) plate spring portions can bias the coil assembly and the body / pipe assembly in a direction to abut each other with uniform spring force. And the body and pipe assembly do not tilt, and malfunction of the solenoid valve can be prevented.

It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a perspective view of the electromagnetic valve which is one embodiment of the present invention. It is a disassembled perspective view which shows a part of structure of a coil core assembly. It is a disassembled perspective view which shows the structure of a body pipe assembly. It is a perspective view of coil assembly. FIG. 5 is a completed view of the body and pipe assembly (with screws omitted). It is a figure which shows the connection structure of a coil assembly and a body pipe assembly, and an assembly method. It is a conceptual diagram which shows the processing method of drawing to a flat steel plate. It is sectional drawing which shows the processing method of the conventional drawing process. It is sectional drawing which shows the 4th process of the drawing process of this Embodiment. It is sectional drawing which shows the 5th process of the drawing process of this Embodiment. It is sectional drawing which shows the state in which the clip is arrange | positioned. It is a figure which shows the positional relationship of a clip, a bending part, and an inner collar part. It is a figure which shows the magnetic circuit in a solenoid valve.

Embodiments of the solenoid valve of the present invention will be described in detail with reference to the drawings. FIG. 3 is a perspective view of the solenoid valve 1 according to the embodiment of the present invention. 1 is a cross-sectional view taken along line AA of FIG. 3, and FIG. 2 is a cross-sectional view taken along line BB of FIG.
Further, FIG. 4 shows a part of the configuration of the coil and core assembly in an exploded perspective view, and FIG. 5 shows the configuration of a body and pipe assembly in an exploded perspective view.
As shown in FIG. 1, FIG. 2 and FIG. 4, the coil core assembly is a coil mold portion in which the winding coil 23 is molded by a resin in a substantially U-shaped upper core 10 in a side view. 20 and a lower core 30. The upper core 10 and the lower core 30 are made of a ferromagnetic material and constitute a part of a magnetic circuit.

At the center of the upper plate portion 11 of the upper core 10, a protruding portion 12 that protrudes downward is formed. Further, four side plate portions 13 are continuously provided below the upper plate portion 11. The protrusion 12 is a hollow cylindrical shape provided with a bottom plate and opened at the top.
Here, the manufacturing method of the protrusion part 12 is demonstrated. FIG. 9, FIG. 11, and FIG. 12 show a process chart of a processing method for drawing the flat steel plate 14 made of a ferromagnetic material. 11 and 12 are cross-sectional views of the fourth step and the fifth step. FIG. 10 is a view showing a conventional drawing process.
As shown in FIG. 10, in the conventional drawing process, the punch is performed in a state in which the area other than the drawing process portion is prevented from being moved by sandwiching by the strong force F3 between the upper die 16 and the lower die 15 A flat steel plate is pressed by 17 to perform drawing processing. Thus, the thickness of the portion other than the drawn portion does not decrease. Only the drawing portion is thinly extended and drawn into a hollow shape having a bottom plate.

Next, the drawing process of the present embodiment will be described. As shown in FIGS. 9, 11 and 12, only the lower die 15 is used in the drawing process without using the upper die 16. In the present embodiment, the projecting portion 12 is obtained by sequentially performing five drawing processes, not shown, of a first process, a second process, a third process, a fourth process shown in FIG. 11 and a fifth process shown in FIG. Form.
Although not shown, the diameter d2 of the punch 18A used in the first step is larger than the diameter d1 of the punch 17 of FIG. 10, and the inner diameter D2 of the processing hole of the lower die 15A is also large, and the end face of the processing hole is inclined The flat steel plate 14 is formed into a truncated cone shape by forming a surface.
Although not shown, the diameter d3 of the punch 18B used in the second step is smaller than the diameter d2 of the punch 18A in the first step, and the inner diameter D3 of the processing hole of the lower die 15B is also smaller than the inner diameter D2 of the first step. The inclined surface of the end face of the processed hole is also formed to be steeper than that in the first step, and the truncated cone shape is brought closer to a cylindrical shape.
Although not shown, diameter d4 of punch 18C used in the third step is smaller than diameter d3 of punch 18B in the second step, and inner diameter D4 of the processing hole of lower die 15C is also smaller than inner diameter D3 of the second step. The inclined surface of the end face of the processed hole is also formed to be steeper than that in the second step, and the truncated cone shape is brought closer to a cylindrical shape.
FIG. 11 is a view showing a fourth step of the drawing process. The diameter d5 of the punch 18D used in FIG. 11 is larger than the diameter d4 of the punch 18C of the third step, and the inner diameter D5 of the processing hole of the lower die 15D is also larger than the inner diameter D4 of the third step. Has a cylindrical shape.
In FIG. 9, forces F1 and F2 are applied to the flat steel plate 14 from the outside, but if the thickness W1 of the side plate in the vicinity of the bottom plate of the projecting portion 12 can ensure the required thickness, the force from the outside There is no need to add F1 and F2.
The 5th process of drawing processing is shown in FIG. In FIG. 12, the lower sliding die 19 sliding on the processing hole of the lower die 15D in the state of FIG. 11 ascends to push up the steel plate and hold it between the punch 18D and adjust the shape of the bottom of the steel plate. .

By having the first to fifth steps, the protrusion 12 is completed. In the case of the drawing process, the thickness W1 of the side plate in the vicinity of the bottom plate of the protrusion 12 is most extended and becomes thinner. In the present embodiment, since the metal material is moved from the place other than the drawing part to the drawing part without fixing by clamping the part other than the drawing part by the die, the bottom plate of the projecting part 12 The thickness W3 of the side plate is greater than the thickness W2 of the flat steel plate as the material, and the thickness W1 of the side plate near the bottom plate is 80% or more of the thickness W2 of the flat steel plate as the material. I have secured.
The diameter d5 of the punch 18D is smaller than the diameter d1 of the punch 17 of FIG. 10 so as not to contact the inner surface of the side plate near the inlet far from the bottom plate of the protrusion 12. In drawing, in order to prevent the plate from becoming thin, as shown in FIG. 9, forces F 1 and F 2 are applied so that the metal material flows into the protrusion 12. This is because the inner diameter of the protrusion 12 is narrowed.

As shown in FIG. 4, after the coil mold unit 20 winds the coil 23 around the outer periphery of a hollow coil bobbin 24 made of resin, the mold unit 21 is formed by insert molding the coil bobbin 24 wound with the coil 23. Form.
The protruding portion 12 of the upper core 10 is inserted into the hollow hole of the coil bobbin 24 from the upper surface side.

At the center of the bottom plate portion 31 of the lower core 30, a protruding portion 32 protruding upward is formed. A side plate portion 33 extends upward in each of the two opposing surfaces of the bottom plate portion 31. As shown in FIG. 2, a pair of U-shaped inner collar portions 34 are formed downward on the two surfaces where the side surface plate portions 33 are not formed. The pair of inner ridges 34 opens inward.
The projecting portion 32 of the lower core 30 is inserted from the bottom side with respect to the hollow hole of the coil bobbin 24.
With the coil mold portion 20 sandwiched between the upper core 10 and the lower core 30, the tip of the side surface plate portion 13 is welded and joined to the side surface plate portion 33 to complete the coil-core assembly.
Then, the coil / core assembly is insert-molded to form a mold portion 81, whereby the coil assembly 2 shown in FIG. 6 is completed.

Next, the body and pipe assembly will be described.
As shown in FIGS. 1, 2 and 5, the stuffing 40 which is a fixing tool is fastened to the body 70 by four screws (not shown) with the flared pipe 50 and the O-ring 69 sandwiched therebetween.
The stuffing 40 has a substantially square plate shape, and screw holes 45 are formed at four corners. The central portion is provided with a side plate 42 projecting upward over the entire circumference, and the tip of the side plate 42 is provided with a bent portion 43 bent toward the outer circumferential direction over the entire circumference.

The flare pipe 50 includes a hollow cylindrical portion 51 closed by the upper surface 55 and a large diameter portion 53 expanded by the enlarged diameter portion 52. The enlarged diameter portion 52 is formed orthogonal to the cylindrical portion 51 and the large diameter portion 53, and the cylindrical portion 51 and the large diameter portion 53 are formed in parallel.
The lower end of the large diameter portion 53 is provided with a flange portion 54 which spreads outward. The flare pipe 50 is formed of a magnetic material and constitutes a part of a magnetic circuit. In the inside of the large diameter portion 53, a cylindrical compression spring 59 is accommodated.

The plunger 60, which is a movable core, includes a plunger body 61 made of a ferromagnetic material. A rubber hole is formed at the center of the upper surface of the plunger main body 61, and a silent rubber 64 is mounted in the rubber hole so as to protrude from the upper surface. The silent rubber 64 is for reducing the collision noise generated when the plunger 60 is sucked by the protrusion 12.
An upper wear ring 63 made of resin is formed on the upper side of the outer surface of the plunger main body 61 so as to protrude outward at a constant distance. A resin ring 63 a having a plurality of projections formed outward in the axial direction is formed integrally with the upper wear ring 63 on the upper surface of the plunger main body 61. As a result, since the impact at the time of suction is alleviated, the ring 63 a prevents damage to the flare pipe 50 and improves the return characteristic of the plunger main body 61.

As shown in FIG. 1, a valve body holding portion 68 made of resin is integrally formed at the lower portion of the plunger main body 61. A lower wear ring 65 is formed so as to project outward on the upper outer periphery of the valve body holding portion 68 and above the lower end of the cylindrical portion 51 of the opposing flare pipe 50.
Since the upper wear ring 63 and the lower wear ring 65 are in contact with the inner peripheral surface of the cylindrical portion 51, about 0.5 mm between the outer peripheral surface of the plunger main body 61 and the inner peripheral surface of the cylindrical portion 51 A gap is formed.

Thus, the outer peripheral surface of the plunger main body 61 does not contact the inner peripheral surface of the cylindrical portion 51. Therefore, the plunger main body 61 and the cylindrical portion 51 do not slide at the time of operation, and the sliding surface is deteriorated by repeated operation. In addition, it is possible to prevent the occurrence of malfunction due to the increase of the sliding resistance due to the generation of wear powder.
Further, since this gap serves as magnetic resistance of magnetic flux flowing laterally from the inner peripheral surface of the cylindrical portion 51 to the outer peripheral surface of the plunger main body 61, suction between the inner peripheral surface of the cylindrical portion 51 and the outer peripheral surface of the plunger main body 61 The power is reduced.
The outer peripheral lower end portion of the valve body holding portion 68 is provided with a flange portion 67 projecting outward. Further, a space 66 is formed on the inner periphery of the valve body holding portion 68, and a rubber valve 75 is mounted in the space 66.

The body 70 is provided with a first flow passage 71 and a second flow passage 72. The first flow path 71 and the second flow path 72 are communicated by a valve hole, and the valve hole is provided with a valve seat 73. When the valve body 75 abuts against the valve seat 73, the first flow path 71 and the second flow path 72 are shut off, and when the valve body 75 separates from the valve seat 73, the first flow path 71 and the second flow The passage 72 is in communication.
The plunger 60 is slidably held in the flare pipe 50 via the upper wear ring 63 and the lower wear ring 65. The upper end of the compression spring 59 abuts on the inner peripheral surface of the enlarged diameter portion 52 of the flare pipe 50, and the lower end of the compression spring 59 abuts on the flange portion 67 of the plunger 60. The compression spring 59 urges the plunger 60 in a direction in which the valve body 75 abuts on the valve seat 73.

Here, since the enlarged diameter portion 52 is formed orthogonal to each of the cylindrical portion 51 and the large diameter portion 53, the compression spring 59 abuts on the inner surface of the large diameter portion 53 in a stable manner. Since the biasing force of the spring 59 can be stabilized and the movement of the plunger 60 can be stabilized, variations in the response speed of the solenoid valve 1 can be reduced to realize constant response timing. That is, when the plunger 60 is attracted to the projecting portion 12, the plunger 60 is moved by the magnetic force generated by the energization, so that the driving timing of the plunger 60 is stable. However, since the force of the compression spring 59 is weak compared to the attraction force of the solenoid, and the plunger 60 is attracted to the projection 12 due to the influence of the residual magnetism, the drive timing for lowering the plunger 60 may be delayed. is there. In order to prevent the delay, it is highly necessary to keep the biasing force of the compression spring 59 stable.
In addition, since the compression spring 59 may get into the gap between the plunger 60 and the cylindrical portion 51 to cause malfunction, the position of the compression spring 59 also needs to be stabilized.
The stuffing 40 is fastened to the body 70 by the four screws (not shown) while holding the flared pipe 50 and the O-ring 69 in between, with the screw being omitted shown in FIG. 7. Body-pipe assembly 3 is completed.

Next, the connection structure between the coil assembly 2 and the body / pipe assembly 3 and the method of assembly will be described based on FIG.
The flared pipe 50 of the body / pipe assembly 3 is inserted into the hollow hole of the coil assembly 2 from the lower surface. Then, the clip 91 is inserted to connect the coil assembly 2 and the body / pipe assembly 3. The clip 91 is formed by pressing a stainless steel plate for spring having a thickness of about 1 mm.
As shown in FIG. 8, the clip 91 includes a substantially U-shaped clip main body 92 and a handle portion 94 for the operator to hold. The clip body 92 is provided with a plate spring 93 projecting outward at four points. When viewed from the side, the plate spring 93 is bent downward in a convex triangle shape, and has springability in the vertical direction.

As shown in FIG. 2, the clip body 92 is inserted into the space between the inner ridge 34 of the lower core 30 of the coil assembly 2 and the fold 43 of the stuffing 40 of the body and pipe assembly 3.
FIG. 13 is a cross-sectional view showing a state in which the clip 91 is disposed. FIG. 14 shows the positional relationship between the clip 91 and the bent portion 43 and the inner collar portion 34. As shown in FIG. As shown in FIGS. 13 and 14, a part of the upper surface of the clip body 92 is in contact with the lower surface of the bent portion 43 of the stuffing 40. The apexes of the four flat springs 93 that are bent in a triangular shape are in contact with the upper surface of the inner collar portion 34 of the lower core 30.
The inner flange portion 34 of the lower core 30 of the coil assembly 2 and the bent portion 43 of the stuffing 40 of the body and pipe assembly 3 are biased in a direction away from each other by the spring force of the four plate springs 93. The coil assembly 2 and the body / pipe assembly 3 are connected by the biasing force of the plate spring 93.
In the present embodiment, a single spring force is 15 to 25N, and a total of four plate springs 93 has a total force of 60 to 100N.

Conventionally, the coil assembly and the body-pipe assembly are, for example, fixed iron cores welded to the upper end of the hollow portion of the guide pipe of the body-pipe assembly, penetrated into the hollow hole of the drive device and stopped at the upper end It was connected by a circle. At this time, a wave washer is inserted between the coil assembly 2 and the body / pipe assembly to bias the coil assembly upward.
In the conventional method, there is a problem that the number of parts is large, and since the connecting portion is provided on the upper portion of the solenoid portion, there is a problem that it can not be applied to a structure in which the fixed iron core does not penetrate the solenoid portion.
In the present embodiment, since the inner flange portion 34 of the lower core 30 of the coil assembly 2 and the bent portion 43 of the stuffing 40 of the body / pipe assembly 3 can be connected only by the clip 91 having elasticity, The number of parts can be reduced.

  As shown in FIG. 8, the name plate 88 is attached to the coil assembly to complete the solenoid valve 1.

Next, the magnetic circuit of the solenoid valve 1 will be described. The magnetic circuit in the solenoid valve 1 is shown in FIG. Note that FIG. 15 is a diagram in which oblique lines indicating a cross section are omitted in FIG.
As shown in FIG. 15, in the magnetic circuit, the magnetic flux S is restricted by the thickness W1 of the side plate near the bottom plate shown in FIG. 12 where the cross-sectional area is smallest. However, in this embodiment, the side plate near the bottom plate Since the thickness W1 secures a thickness of 80% or more of the thickness W2 of the flat steel plate which is the material, a sufficient magnetic flux can be secured, and the attraction force of the solenoid is not reduced. Responsiveness at the time of opening can be maintained high.
In the present embodiment, a magnetic material is used as the material of the flare pipe 50. Normally, when magnetic metal is used as a guide pipe for guiding the plunger, the outer peripheral side surface of the plunger is attracted to the guide pipe and a large sliding resistance is generated. Therefore, the material of the guide pipe is a nonmagnetic material. ing.
However, when a nonmagnetic material is used for the guide pipe, the nonmagnetic metal is present in the middle of the main magnetic circuit flowing from the fixed core to the plunger, the resistance of the main magnetic circuit increases, and the flowing magnetic flux decreases. There was a problem.

In the present embodiment, in order to avoid the problem, magnetic metal is used as the material of the flare pipe 50. Since magnetic flux flows through the flare pipe 50 of magnetic metal and the suction force in the lateral direction increases in the plunger 60 contained in the cylindrical portion 51, the plunger main body 61 and the cylindrical portion 51 slide to slide by repeated operation. The upper wear ring 63 and the lower wear ring 65 are in contact with the inner peripheral surface of the cylindrical portion 51 in order to prevent the occurrence of operation failure due to deterioration of the dynamic surface or generation of wear powder and an increase in sliding resistance. Thus, a gap of about 0.5 mm is formed between the outer peripheral surface of the plunger main body 61 and the inner peripheral surface of the cylindrical portion 51.
Further, since this gap serves as magnetic resistance of magnetic flux flowing laterally from the inner peripheral surface of the cylindrical portion 51 to the outer peripheral surface of the plunger main body 61, a suction force between the inner peripheral surface of the cylindrical portion 51 and the outer peripheral surface of the plunger main body 61 Is reduced.

  As described above in detail, according to the solenoid valve 1 of the present embodiment, (1) the plunger 60 is attracted to move the valve body 75 by energizing the hollow cylindrical coil mold portion 20. In the valve 1, a coil assembly 2 having a coil mold portion 20 and a body / pipe assembly 3 having a flare pipe 50 on which a plunger 60 slides on the sliding inner surface and assembled to a body 70 are mounted from the lateral direction. Because the clip 91 is fixed by the clip 91, the clip 91 has a plate spring 93 for biasing the coil assembly 2 in the direction of the body and pipe assembly 3, the coil assembly 2 and the body and pipe Since the assembly 3 can be connected only by the clip 91 having a spring property, the number of parts can be reduced.

(2) In the solenoid valve 1 according to (1), the body and pipe assembly 3 has the bending portion 43 for the stuffing 40 for mounting, and the coil assembly 2 surrounds the coil mold portion 20 to form a magnetic circuit. A magnetic core (upper core 10, lower core 30) to be formed is provided with an inner flange 34, and a plate spring 93 is mounted between the bent part 43 and the inner flange 34. Because the inner flange portion 34 of the lower core 30 of the coil assembly 2 and the bent portion 43 of the stuffing 40 of the body and pipe assembly 3 can be connected only by the clip 91 having a spring property, the number of parts is reduced. it can.
Also, the clip 91 can be easily mounted in the space formed by the inner collar portion 34 extending inward from the lower core 30 toward the stuffing 40 and the bent portion 43 extending outward from the stuffing 40 toward the lower core 30. As a result, the workability of the solenoid valve assembly can be improved.

(3) In the solenoid valve 1 described in (2), the clip main body 92 of the clip 91 is in contact with the bent portion 43, the plate spring 93 has a triangular convex portion, and the apex of the triangular convex portion is Since it is characterized in that it abuts on the flange portion 34, a plurality (four) of leaf springs 93 are attached in the direction in which the coil assembly 2 and the body / pipe assembly 3 abut with a uniform spring force. Since it can be biased, the coil assembly 2 and the body / pipe assembly 3 do not tilt, and malfunction of the solenoid valve 1 can be prevented.

The present embodiment is merely an example and does not limit the present invention. Therefore, the present invention is naturally capable of various improvements and modifications within the scope of the subject matter of the present invention.
For example, in the present embodiment, four leaf springs 93 are used, but other numbers may be used in consideration of the overall balance.

DESCRIPTION OF SYMBOLS 1 solenoid valve 10 upper core 11 upper plate part 12 protrusion part 20 coil mold part 30 lower core 40 stuffing 50 flare pipe 51 cylindrical part 52 enlarged diameter part 53 large diameter part 59 compression spring 60 plunger 63 upper wear ring 65 lower wear ring 70 Body 91 clip 92 clip body 93 leaf spring

Claims (3)

In a solenoid valve for attracting a movable core to move a valve body by energizing a hollow cylindrical solenoid,
The coil assembly having the solenoid and the body-pipe assembly having the pipe on which the movable core slides on the sliding inner surface and assembled to the body are fixed by a clip mounted from the lateral direction.
The clip has a leaf spring portion that biases the coil assembly in the direction of the body and pipe assembly.
A solenoid valve characterized by In the solenoid valve according to claim 1,
The body and pipe assembly comprises a stuffing collar for mounting stuffing,
In the coil assembly, a magnetic core including a core ridge portion surrounding the coil to form a magnetic circuit,
The plate spring portion is mounted between the stuffing collar portion and the core collar portion.
A solenoid valve characterized by In the solenoid valve according to claim 2,
The clip body of the clip is in contact with the stuffing collar;
The plate spring portion includes a triangular convex portion, and a vertex of the triangular convex portion is in contact with the core ridge portion.
A solenoid valve characterized by

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