JPH07260030A - Solenoid valve - Google Patents

Abstract

PURPOSE:To facilitate fixing work of a sleeve by fixing an annular locking member to be engaged with an engaging stepped part onto a housing main body in a state where the base end of the sleeve is pressed toward a housing main body until a thin wall part is made flux by being brought in contact with the inner surface of a taper hole part. CONSTITUTION:A large diameter part 29b taking the opening end side as a thin wall part 29c is provided on the base end of a sleeve 29 through an annular engaging stepped part 29a. The thin wall pat 29c is made flux by being pressed against a taper hole part 32b provided on a housing main body 27 and brought in contact with the whole surface of the inner surface of the taper hole part 32b, so as to exhibit sufficient sealing performance. Moreover, a locking member 28 to be engaged with the engaging stepped part 29a is caulked and fixed on the housing main body 27 after the base end of the sleeve 29 is pressed in the housing main body 27. Therefore, caulking work has no effect on holding of the degree of centering of the sleeve 29 and holding of sealing performance. Thereby, management of fixing work of the sleeve 29 to the housing main body 27 can be facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing having a valve seat having a valve hole opened in the center thereof, and an insertion hole coaxial with the valve hole provided in the housing. The movable core, which is liquid-tightly fixed to the housing main body with the base end part of the plug inserted in the insertion hole, and which operates integrally with the valve body that can be seated on the valve seat, is slidably fitted to the sleeve. Related to the solenoid valve.

[0002]

2. Description of the Related Art Conventionally, such an electromagnetic valve is already known, for example, from Japanese Patent Laid-Open No. 5-503267, and the base end of the sleeve is liquid-tightly fixed to the housing main body without using a seal member. There is.

[0003]

In the above-mentioned conventional solenoid valve, the trumpet-shaped widening portion provided at the base end portion of the sleeve is brought into contact with the taper surface provided on the bush mounted in advance on the housing. In this state, the housing main body is caulked and engaged with the expanding portion, so that the base end portion of the sleeve is clamped between the caulking portion of the housing main body and the bush. By the way, the movable core that operates integrally with the valve body is guided by a sleeve so that the operation axis of the movable core and the axis of the valve hole are aligned (to prevent misalignment). ) The base end of the sleeve has to be fixed to the housing main body, but in the above-mentioned conventional one, the sleeve is directly attached to the housing main body by the clamping force by caulking, so management of caulking work while maintaining coreness That is, it is difficult to manage the points that are points in assembly to prevent caulking defects. Moreover, since the caulking work also affects the expanding portion of the sleeve and the seal pressure between the bushes, the work management becomes more difficult.

The present invention has been made in view of the above circumstances, and an electromagnetic wave which facilitates the management of the fixing work of the sleeve to the housing main body while ensuring the sealing function without using the sealing member and the coreness of the sleeve. The purpose is to provide a valve.

[0005]

In order to achieve the above object, according to the present invention, a housing main body having a valve seat having a valve hole opened at a central portion is provided with an insertion hole coaxial with the valve hole. The base end of a cylindrical sleeve with a closed end is fixed to the housing body in a liquid-tight manner while being inserted into the insertion hole, and is movable integrally with a valve body that can be seated on the valve seat. In a solenoid valve in which a core is slidably fitted to a sleeve, a large-diameter portion having a thin portion at least an opening end is provided at a base end portion of the sleeve via an annular engagement step portion,
The insertion hole has an insertion hole portion into which the large-diameter portion can be inserted, and a taper hole portion that becomes smaller in diameter as it separates from the insertion hole portion. The insertion hole is provided mainly in the housing. An annular locking member that engages with the engagement step portion is fixed to the housing main body in a state in which the base end portion of the sleeve is pressed toward the housing main body until it is pressed against the inner surface to bend. To do.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 show a first embodiment of the present invention. FIG. 1 is a vertical sectional view of a normally closed solenoid valve, FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG. Is a sectional view taken along line 3-3 of FIG.
4 is a perspective view of the magnetic path frame, FIG. 5 is a cross-sectional view of an essential part showing a process of fixing the sleeve to the housing main body, and FIG. 6 is a cross-sectional view corresponding to FIG. 5 after the sleeve is fixed.

First, in FIG. 1, the normally closed solenoid valve V _C is
Solenoid unit 10 and the solenoid unit 10
And a valve actuation unit 11 _C that is actuated by the electromagnetic force.

The solenoid unit 10 includes a coil assembly 12 and a magnetic path frame 13 mounted on the coil assembly 12, and the coil assembly 12 includes a bobbin 14 made of synthetic resin and the bobbin. A coil 15 wound around 14 is covered with a mold part 16 made of synthetic resin.

Referring to FIGS. 2 and 3 together, the bobbin 14 includes a cylindrical portion 14a, a first flange portion 14b extending radially outward at one axial end of the cylindrical portion 14a, and a first flange portion 14b. A second flange portion 14c protruding radially outward from the cylindrical portion 14a at a position spaced apart from the flange portion 14b in the other axial direction, and a second flange portion 1 at the other end of the cylindrical portion 14a.
4c and the lead wire holding | maintenance part 14d continuously provided.

The coil 15 is wound around the cylindrical portion 14a between the first and second flange portions 14b and 14c of the bobbin 14.

The bobbin 1 is mounted on the coil assembly 12 in which the bobbin 14 and the coil 15 are covered with the mold portion 16.
4 is provided with a center hole 17 that makes the best use of the inner surface of the cylindrical portion 14a of the bobbin 14, and the inner end of the bobbin 14 is located at the inner end on the axially outer side of the one flange portion 14c.
A fitting groove 18 is formed along the radial direction of the center hole 17 so that the fitting groove 18 is exposed to the outside and the outer end is opened to the outer surface of the coil assembly 12. Thus, the bobbin 14 has a mold portion 16
Before the covering by, a slit which becomes a part of the fitting groove 18 is provided in advance.

In the lead wire holding portion 14d of the bobbin 14, a pair of connection terminals 19 and 20 connected to both ends of the coil 15 are provided on the side opposite to the outer end opening 18a of the fitting groove 18 with respect to the axis of the center hole 17. Are fixed, and one ends of the lead wires 21 and 22 are connected to the connection terminals 19 and 20 by soldering or the like. Moreover, both lead wires 21,
Reference numeral 22 denotes a part of the lead wire holding portion 14d that is held in the lead wire holding portion 14d and is led to the outer end opening 18a side of the fitting groove 18. The closed portion is embedded in the mold portion 16.

Referring also to FIG. 4, the magnetic path frame 13 contacts the first flat plate portion 1 which abuts and engages with one end of the coil assembly 12.
3a, the second flat plate portion 13b fitted in the fitting groove 18 of the coil assembly 12, and the first and second flat plate portions 13a, 13
It has a connecting plate portion 13c for connecting b, is formed in a substantially "U" shape by magnetic metal, and is attached to the coil assembly 12 so that an attachment operation along the radial direction of the center hole 17 is possible.

The first flat plate portion 13a is formed in a disk shape corresponding to the shape of one end of the coil assembly 12, and has a penetrating hole which is aligned with the central hole 17 of the coil assembly 12 at the center thereof. The hole 23 is provided in a circular shape having the same diameter as the central hole 17. A through hole 24 aligned with the central hole 17 of the coil assembly 12 is formed at the tip of the second flat plate portion 13b in an arc shape which is flush with the inner peripheral surface of the central hole 17 over a range of 180 degrees or more. Is provided.

Referring again to FIG. 1, the valve actuation unit 11 _C
Is a valve housing 26 including a sleeve 29, a fixed core 46 fixed in the sleeve 29, a movable core 49 _C housed in the sleeve 29 by being biased by a spring in a direction away from the fixed core 46, and a valve. The movable core 4 can be seated on the valve seat 43 _C fixedly provided on the housing 26.
And a valve body 51 fixed to 9 _C.

The valve housing 26 has a housing main body 27 formed of a magnetic metal in a stepped cylindrical shape, and a base of a sleeve 29 formed of a non-magnetic material such as stainless steel in a thin-walled bottomed cylindrical shape with its tip closed. The end portion is liquid-tightly fixed by using an annular locking member 28 formed in an annular shape and caulked and fixed to the housing main body 27.

With reference also to FIG. 5, before the sleeve 29 is fixed, the thin cylindrical portion is provided at the end of the housing main body 27 on the solenoid unit 10 side through an annular step 30 facing the solenoid unit 10 side. 27a is provided. Further, in the housing main body 27, if one end is connected to the other end of the insertion hole 32 via a insertion hole 32 whose one end opening is surrounded by the stepped portion 30 and a stepped portion 33 facing the insertion hole 32 side. The taper hole 34 that is smaller than the other end (small-diameter end) of the taper hole 34 and has a smaller diameter as it separates from the step part 33 and the taper hole 3 through the step part 35.
4, a press-fitting hole 36 having one end connected to the other end, and a press-fitting hole 36
And a passage hole 38 having a smaller diameter and one end of which is connected to the other end of the press-fitting hole 36 via a step portion 37, and a passage hole 38 having a diameter larger than that of the passage hole 38 and a step portion 39. A mounting hole 40 having one end connected to the other end and the other end opened is provided coaxially. In addition, the insertion hole 32 has a tapered shape in which the insertion hole portion 32a having one end opened to the step portion 30 side and a tapered shape that becomes smaller in diameter as it separates from the insertion hole portion 32a and continues to the other end of the insertion hole portion 32a. And a small diameter hole portion 3 having one end connected to the other end (small diameter end) of the tapered hole portion 32b.
2c and.

A cylindrical valve seat member 41 _C is fixed to the housing main body 27 by press-fitting it into the press-fitting hole 36 until the base end of the valve seat member 41 _C abuts against the step portion 37, and the valve seat member protruding from the press-fitting hole 36. The passage hole 38 is provided at the center of the tip of the member 41 _C.
A tapered valve seat 43 _C having a valve hole 42 c communicating with the center is opened at the center. The mounting hole 40 has a passage hole 3
Filter 4 for filtering the working fluid flowing toward the 8 side
4 is attached.

A large diameter portion 29b is provided at the base end portion of the sleeve 29 via an annular engaging step portion 29a which extends outward in the radial direction. The large diameter portion 29b is inserted into the insertion hole 32. It is formed in a cylindrical shape having an outer diameter that can be inserted into the hole 32a. Moreover, on the opening end side of the large-diameter portion 29b, a thin-walled portion 29c is provided whose thickness is gradually reduced toward the opening end side.

On the other hand, the locking member 28 is formed in an annular shape so that the inner peripheral side can be engaged with the engaging stepped portion 29a of the sleeve 29 and the outer peripheral side can be engaged with the stepped portion 30 of the housing main body 27. It is something.

The base of the sleeve 29 is connected to the housing main body 2
5, the engaging member 28 is engaged with the engaging step portion 29a of the sleeve 29 so that the sleeve 29 is applied with a pressing force toward the housing main body 27 side. . Thereby, as shown in FIG.
The thin portion 29c of the sleeve 29 is pressed against the inner surface of the tapered hole portion 32b so that the thin portion 29c bends along the inner surface of the tapered hole portion 32b, and a pressing force is applied until the locking member 28 contacts the step portion 30. As a result, the thin portion 29
c is in close contact with the inner surface of the tapered hole portion 32b over the entire circumference. Therefore, by caulking the thin-walled cylindrical portion 27a of the housing main body 27 inwardly to engage with the locking member 28,
The base end portion of the sleeve 29 is fixed to the housing main body 27.

A tip closing portion 29d of the sleeve 29 is formed in a hemispherical shape, and a fixed core 46 made of magnetic metal is fitted and fixed in the sleeve 29 on the tip closing portion 29d side. That is, the fixed core 46 is provided with a spherical contact surface 47 that contacts the inner surface of the distal end blocking portion 29c of the sleeve 29 on one end side, and an annular locking groove 48 on the outer peripheral surface that contacts the inner peripheral surface of the sleeve 29. Is provided, and the fixed core 46 is fitted into the sleeve 29 until the contact surface 47 is brought into contact with the inner surface of the tip closing portion 29d,
By caulking the sleeve 29 inward at the portion corresponding to the locking groove 48 and engaging with the locking groove 48, the fixed core 46
Are fixed in the sleeve 29.

Movable core 49_CFaces the fixed core 46
Is slidably fitted in the sleeve 29,
Body 27 and movable core 49_CIn the sleeve 29 between
Valve seat member 41_CValve chamber 50 with the tip of the valve facing_CFormed
Be done. Therefore, the movable core 49_CValve chamber 50_CIn the end facing the
At the center, the valve seat member 41_CValve seat 43_CSpherical that can be seated on
The valve body 51 of is fixed. Also fixed in the sleeve 29
Core 46 and movable core 49_CBetween the movable core 49_C
In the direction of moving away from the fixed core 46, that is, the valve body 51
Valve seat 43_CReturn that exerts a spring force in the direction to be seated on
Spring 52_CThe movable core 49_CMultiple outer surfaces
The flow groove 53 that allows the working fluid to flow._C… Is the axial direction
Drilled over the entire length. Furthermore, the fixed core 46 can move.
Core 49 _CAt the side end, the movable core 49_CFixed core 4
6 made of non-magnetic material to avoid direct contact with
The spacer 54 is attached.

An annular recess 5 is formed on the outer periphery of the housing main body 27.
5 is provided, and the annular recess 55 is provided in the housing main body 27.
It is communicated with the valve chamber 50 _C via a communication passage 56 formed in the valve chamber. An annular filter 57 is attached to the outer periphery of the housing main body 27 so as to cover the annular recess 55. Thus, the housing main body 27 is fitted to a support body (not shown) with the filter 57 attached, and the filter 5
O-rings 58 and 59 which are elastically contacted with the inner circumference of the above-mentioned support are mounted on the outer circumference of the housing main body 27 on both sides of 7.

[0026] Such valve operating unit 11 _C, so as to fit the valve operating unit 11 _C of the sleeve 29 into the center hole 17, mounted solenoid unit 10, whereby the normally closed electromagnetic valves V _C is constructed.

Moreover, in the assembled state of the solenoid unit 10, the housing main body 27 and the locking member 28 of the valve actuation unit 11 _C are brought into contact with the first flat plate portion 13 a of the magnetic path frame 13 of the solenoid unit 10. Further, a spherical receiving portion 17a is provided at the end of the center hole 17 on the side opposite to the valve operating unit 11 _C.
The closed end 29c of the sleeve 29 fitted in the sleeve 7 is received by the receiving portion 17a.

The operation of the first embodiment will now be described. In the demagnetized state of the coil 15, the movable core 49 _C is moved to the side away from the fixed core 46 by the spring force of the return spring 52 _C , and the movable core 49 _C is movable. The valve element 51 that operates integrally with the core 49 _C is seated on the valve seat 43 _C to close the valve hole 42 _C. When the coil 15 is excited, a magnetic path from the fixed core 46 to the fixed core 46 via the sleeve 19, the magnetic path frame 13 and the movable core 49 _C is generated, and the movable core 45 _C is attracted to the fixed core 46 side. it allows the valve element 51 is to open the valve hole 42 _C and away from the valve seat 43 _C. Therefore, the hydraulic fluid that has passed through the filter 57 and flowed into the annular recess 55 flows out of the filter 44 through the communication passage 56, the valve chamber 50 _C , the valve hole 42 _C and the passage hole 38.

In such a normally closed solenoid valve V _C , in the solenoid unit 10, the coil assembly 12 is disposed on the axially outer side of the second flange portion 14 c of the bobbin 14.
A fitting groove 18 having an inner end facing the center hole 17 and an outer end opened to the outer surface of the coil assembly 12 has a center hole 17
The magnetic path frame 13 is provided along the radial direction of
The flat plate portion 13b is fitted into the fitting groove 18 and mounted on the coil assembly 12. Moreover, the second flat plate portion 13b of the magnetic path frame 13 is provided with a through hole 24 having an inner peripheral surface that is flush with a part of the inner peripheral surface of the center hole 17, and the first flat plate portion of the magnetic path frame 13 is provided. A through hole 23 is provided on the inner peripheral surface of the center hole 17 on the inner circumference 13a so as to be flush with the entire circumference. Therefore, the sleeve 29 fitted in the bobbin 14 has a first
The second flat plate portions 13a and 13b can be brought into contact with each other, and the fixed core 46 in the sleeve 29 is attached to the magnetic path frame 13.
Can be made as close to each other as possible, thereby reducing the magnetic path resistance and increasing the magnetic attraction force, and the solenoid unit 10 can be miniaturized.

The normally closed solenoid valve V _C is constructed by assembling the valve operating unit 11 _C and the solenoid unit 10 so that the sleeve 29 of the valve operating unit 11 _C is fitted in the center hole 17. Since the solenoid unit 10 can be downsized by increasing the magnetic attraction force as described above, it is possible to apply a relatively large driving force to the valve actuation unit 11 _C , and the normally closed solenoid valve is provided. It is possible to reduce the size of V _C.

Further, in the solenoid unit 10, one end of the solenoid unit 10 is connected to the axis of the center hole 17 on the side opposite to the outer end opening 18a of the fitting groove 18 via the connection terminals 19 and 20 and the coil 1 is provided.
The lead wires 21, 22 connected to 5 are led out to the outer end opening 18a side of the fitting groove 18 on the outer side of the fitting groove 18 along the axial direction of the center hole 17, and the lead wires 21 thereof are provided. , 22
Are embedded in the mold part 16. Therefore, the length of the portion of the lead wires 21 and 22 embedded in the mold portion 16 is set to be relatively large as compared with the lead wires 21 and 22 which are led out to the outer side in the axial direction of the coil assembly 21. The effective length of the seal can be made relatively large and the sealability can be improved.

Further, in the valve actuation unit 11 _C , a large diameter portion 29 b having a thin wall portion 29 _c on the open end side is provided at the base end portion of the sleeve 29 via an annular engagement step portion 29 a. The portion 29c is pressed against the tapered hole portion 32b provided in the housing main body 27 to bend, and closely contacts the inner surface of the tapered hole portion 32b over the entire circumference so that sufficient sealing performance can be exhibited. At this time, by controlling the direction of the pressing force applied to the sleeve 29, it is possible to prevent the misalignment of the sleeve 29 with respect to the insertion hole 32 in the housing main body 27, and to prevent the housing main body at the base end portion of the sleeve 29. The sealing performance can be controlled by adjusting the press-fitting amount into 27. Moreover, after the base end portion of the sleeve 29 is press-fitted into the housing main body 27, the locking member 2 is engaged with the engagement step portion 29a.
Since 8 is caulked and fixed to the housing main body 27, caulking work does not affect the retention of the core of the sleeve 29 and the retention of the sealing performance.

FIG. 7 shows a second embodiment of the present invention, in which parts corresponding to those in the first embodiment are designated by the same reference numerals.

This normally open solenoid valve V _O is composed of a solenoid unit 10 and a valve actuation unit 11 _O which is actuated by the electromagnetic force of the solenoid unit 10.
The valve actuation unit 11 _O is spring-biased in a direction in which the valve housing 26 including the sleeve 29, the valve seat member 41 _O that also serves as a fixed core and is fixed to the valve housing 26, and the valve seat member 41 _{O are} separated from each other. A movable core 49 _O housed in the sleeve 29 and a valve body 51 fixed to the movable core 49 _O so as to be able to be seated on the valve seat 43 _O provided on the valve seat member 41 _O.

In the housing main body 27 of the valve housing 26, a cylindrical valve seat member 41 _O has its base end at the step portion 3.
7 is fixed by press-fitting into the press-fitting hole 36 until it comes into contact with 7, and a valve hole 42 _O communicating with the passage hole 38 is opened in the central part at the center part of the tip of the valve seat member 41 _O projecting from the press-fitting hole 36. A tapered valve seat 43 _C is provided.

A movable core 49 _O facing the valve seat member 41 _O which also serves as a fixed core is slidably fitted in the sleeve 29, and the sleeve 29 is provided between the housing main body 27 and the movable core 49 _O. , the valve chamber 50 _O which is faced the tip of the valve seat member 41 _O are formed. A spherical valve element 51 that can be seated on the valve seat 43 _O of the valve seat member 41 _O is fixed to the center of the end of the movable core 49 _O facing the valve chamber 50 _O. Further, between the step portion 35 of the housing main body 27 and the movable core 49 _O , a spring force is exerted in a direction of separating the movable core 49 _O from the valve seat member 41 _O , that is, in a direction of separating the valve body 51 from the valve seat 43 _O. The return springs 52 _O are contracted, and the plurality of outer surfaces of the movable core 49 _O are provided with circulation grooves 53 _O ...

In this normally open solenoid valve V _O , when the coil 15 is demagnetized, the movable core 49 _O is moved to the side away from the valve seat member 41 _O by the spring force of the return spring 52 _O. The valve element 51 operating integrally with the movable core 49 _C is separated from the valve seat 43 _O to open the valve hole 42 _O.
Therefore, the hydraulic fluid passing through the filter 44 and flowing into the passage hole 38 flows out of the filter 57 through the valve hole 42 _O , the valve chamber 50 _O , the communication passage 56 and the annular recess 55. When the coil 15 is excited, the valve seat member 4
1 _O to housing main body 27, magnetic path frame 13, sleeve 1
9 and the movable core 49 _O to the valve seat member 41 _O , a magnetic path is generated, and the movable core 49 _O is attracted to the valve seat member 41 _O side, whereby the valve body 51 is seated on the valve seat 43 _O. The valve hole 42 _O is closed.

In the second embodiment, the construction of the solenoid unit 10 is the same as that of the first embodiment, and the fixing structure of the sleeve 29 in the valve operating unit 11 _O is the same as that of the first embodiment. The same effect as the first embodiment can be obtained.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the claims. It is possible to do.

For example, the locking member 28 may be screwed and fixed to the housing main body 27.

[0041]

As described above, according to the present invention, at the base end portion of the sleeve, a large-diameter portion having a thin portion at least at the opening end is provided through the annular engaging step portion, and the insertion hole is Provided with a housing main body having an insertion hole portion into which the large diameter portion can be inserted and a taper hole portion that becomes smaller in diameter as it separates from the insertion hole portion, and the thin portion is formed along the inner surface of the taper hole portion. Since the base end of the sleeve is pressed toward the main body of the housing until it is bent, the annular locking member that engages with the engaging step is fixed to the main body of the housing. It is possible to exert the sealing function without using a sealing member by flexing the sleeve by pressing it against the sleeve. Moreover, while securing the coreness of the sleeve, it is possible to easily manage the work of fixing the sleeve to the housing main body. it can.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a normally closed solenoid valve according to a first embodiment.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is a perspective view of a magnetic path frame.

FIG. 5 is a cross-sectional view of essential parts showing a process of fixing the sleeve to the housing main body.

FIG. 6 is a cross-sectional view corresponding to FIG. 5 after the sleeve is fixed.

FIG. 7 is a vertical sectional view of a normally open solenoid valve according to a second embodiment.

[Explanation of symbols]

27 ... Housing main body 28 ... Engaging member 29 ... Sleeve 29a ... Engaging step portion 29b ... Large diameter portion 29c ... Thin portion 32 ... Insertion hole 32a ... Insertion hole 32 b ... tapered hole portion 42 _C, 42 _O ... valve hole 43 _C, 43 _O ... valve seat 49 _C, 49 _O ... movable core 51 ... valve body V _C ... Normally closed solenoid valve V _O ... Normally opened solenoid valve

Claims (1)

[Claims] To 1. A valve hole (42 _C, 42 _O) a valve seat is opened in the central portion (43 _C, 43 _O) housing main with (27), the valve and the hole (42 _C, 42 _O) A coaxial insertion hole (32) is provided, and the base end of a cylindrical sleeve (29) with a bottom whose end is closed is inserted into the insertion hole (32) and is liquid-tight in the housing main body (27). Fixed to the valve seat (43 _C , 43 _O ) and seatable on the valve body (5
1) In a solenoid valve in which a movable core (49 _C , 49 _O ) that operates integrally with 1) is slidably fitted in a sleeve (29), at least an open end is provided at the base end of the sleeve (29). A large diameter portion (29b) that is a thin portion (29c) is provided via an annular engagement step portion (29a), and an insertion hole (32)
Is an insertion hole (32) into which the large diameter portion (29b) can be inserted.
a) and a tapered hole portion (32b) having a diameter that decreases as it separates from the insertion hole portion (32a), the housing main body (27) is provided with the thin portion (29c) and the tapered hole portion (32b). ) An annular locking member that engages with the engagement step (29a) in a state where the base end of the sleeve (29) is pressed toward the housing main body (27) until the sleeve (29) is pressed against the inner surface of the sleeve (4) to be bent. An electromagnetic valve in which (28) is fixed to the housing main body (27).