JP3290572B2 - Solenoid valve device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve housing in which a base end of a guide cylinder is connected to a main body of a housing which is fitted and fixed to a base body. A plurality of valve operating units in which the components are disposed, a plurality of bobbins having a center hole through which each guide cylinder is inserted, and a plurality of coils wound around each bobbin,
The present invention relates to an electromagnetic valve device including a plurality of magnetic path forming frames surrounding each coil and magnetically coupling a distal end portion of a guide cylinder and a housing main body.

[0002]

2. Description of the Related Art Conventionally, such an electromagnetic valve device is already known, for example, from Japanese Patent Application Laid-Open No. 7-47938.

[0003]

SUMMARY OF THE INVENTION In the above prior art,
A plurality of bobbins around which coils are wound and a plurality of magnetic path forming frames are assembled as a unit common to a plurality of valve operating units mounted on the base, and a state in which each valve operating unit is mounted on the base. Thus, the unit is attached to the base to simplify the assembling work. However, there is a relative position tolerance between the plurality of valve operating units mounted on the base body and each bobbin and the magnetic path forming frame in the unit, and the magnetic path forming frame is provided for each bobbin as described in the above publication. In the case of positioning at a fixed position, it may be difficult to smoothly insert the guide cylinder of the valve operating unit into each bobbin due to the relative position tolerance. Also, when the inner diameter of the center hole of the bobbin is set to be larger than the outer diameter of the guide cylinder so as to absorb the relative tolerance, a relatively large gap is generated between the magnetic path forming frame and the guide cylinder to form the magnetic path. It may be difficult to form a magnetic path by the frame.

The present invention has been made in view of the above circumstances, and it has been made possible to reliably form a magnetic path by a magnetic path forming frame, and to operate each bobbin around which a coil is wound and each valve of the magnetic path forming frame. It is an object of the present invention to provide an electromagnetic valve device that can be easily assembled to a unit.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a valve housing comprising a housing body fitted and fixed to a base body and a base end of a guide cylinder connected to a base of the housing. A plurality of valve operating units in which valve components such as a core, a valve body and a return spring are disposed, a plurality of bobbins having a center hole through which each guide cylinder is inserted, and a plurality of coils wound around each bobbin, respectively. And a plurality of magnetic path forming frames that surround each coil and magnetically couple the distal end of the guide cylinder and the housing main body,
A coil unit formed by embedding a plurality of bobbins each wound with a coil in a mold portion made of synthetic resin is attached to a base, and individually covering each bobbin and a plurality of coils wound around those bobbins. With one end of the cylindrical coil corresponding part formed in the mold part
Has a fitting hole for fitting the tip end of the guide cylinder
The magnetic path plate is inserted so that the coil corresponding portion is inserted.
The other end of the coil corresponding portion which is formed in a bottom cylindrical shape
Is connected to the open end of the magnetic path cylinder with the contact part facing the
A plurality of magnetic path forming frames are mounted on each of the coil corresponding portions so as to be freely movable, and the magnetic path forming frames come into contact with each other.
Each guide cylinder is loosely inserted into the insertion hole provided at the center of the section and the center hole of each bobbin , and each coil corresponding section and each magnetic path
Between the contact portions of the forming frame, each magnetic path forming frame is
Each spring biases in the direction of contact with the housing main body.
It is characterized by being provided .

[0006]

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

1 to 5 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a solenoid valve device, and FIG.
2, FIG. 2 is a plan view taken along arrow 2 of FIG. 1 in a state where a lid is omitted, and FIG. 3 is a cross-sectional view showing a fixed core side end surface of a movable core in a normally closed solenoid valve. FIG. 4 is a perspective view of a movable core and a magnet killer, and FIG. 5 is a perspective view of a magnetic path forming frame.

Referring to FIGS. 1 and 2, this solenoid valve device is for controlling an anti-lock brake of a four-wheeled vehicle, for example, and includes four normally-open solenoid valves V _O ... And four normally closed solenoid valves V _C ...
Are disposed on a common base 11 made of metal.

The normally open solenoid valve V _O is a valve operating unit 12
_O , each normally-open solenoid valve V _O ... and each normally-closed solenoid valve V _C
... and a coil unit 13 common to the
And a magnetic path forming frame 14 to be mounted on the main body.

The valve operating unit 12 _O has a valve housing 17 _O formed by connecting a base end of a guide cylinder 15 _O formed into a closed-end cylindrical shape with a closed end to a housing main body 16 _O. , which is fixed stationary core 18 _O fixedly disposed in the proximal portion of the guide tube 15 _O, the movable core 19 _O which faces the stationary core 18 _O contained in the guide tube 15 _O, the valve housing 17 _O in conjunction with the movable core 19 _O as possible the seating of the valve seat member 20 _O, the valve body 21 _O is connected,
And disposed in the valve components are valve housing 17 _O spring 22 _O, etc. return for biasing the direction i.e. valve body 21 _O in the direction of separating from the valve seat member 20 _O to separate the movable core 19 _O from the stationary core 18 _O Is done.

The housing main body 16 _O is formed of a magnetic metal in a stepped cylindrical shape, and a fixed core 18 _O formed in a cylindrical shape is integrally and coaxially connected to one end thereof. Guide tube 15 _O is a non-magnetic material such as stainless steel are those formed tip into a bottomed cylindrical thin wall having a closed end of the semi-spherical base end of the guide tube 15 _O comprises at its base end portion The fixed core 18 _O is fitted into the housing main body 16 _O by, for example, welding.

[0013] base 11, its has fitting holes 23 _O stepped open to one surface 11a is bored as can fit the main housing body 16 _O, the open end toward the inner surface of the fitting hole 23 _O is retaining ring 2 engages the housing main 16 _O and prevents withdrawal from the fitting hole 23 _O of the housing main 16 _O
4 _O is fitted. In addition, when the housing main body 16 _O is fitted into the fitting hole 23 _O and fixed, the guide cylinder 15 _O is attached to the base 1.
1 protrudes from one surface 11a. Housing body 1
At two places spaced apart in the axial direction on the outer surface of 6 _O , annular seal members 25 _O and 26 _O are mounted, and between the seal members 25 _O and 26 _O, between the base 11 and the housing main body 16 _O. annular chamber 27 _O is formed in the.

A cylindrical valve seat member 20 _O is press-fitted and fixed to the housing main body 16 _O. The housing body 16
The _O and the non-magnetic material made of the valve stem 28 is slidably fitted in one end of the valve shaft 28 is slidably fitted so as to face the fixed core 18 _O in the guide cylinder 15 _O Movable core 19
_O in contact with the one end of the valve body 21 _O seating available spherical the valve seat member 20 _O is fixed to the other end of the valve shaft 28. Return spring 22 And in the valve chamber 29 _O formed between the other end and the valve seat member 20 _O of the valve shaft 28, biases the valve shaft 28 i.e. the valve body 21 _O in the direction away from the valve seat member 20 _{O O} is stored. In the state where the magnetic attraction to the fixed core 18 _O is not acting on the movable core 19 _O , the movable core 1 _O
9 _O is in a retracted position until it is received by the closing end of the guide cylinder 15 _O by the spring force of the return spring 22 _O.

A filter 31 is mounted on the housing main body 16 _O so as to be interposed between a brake pressure passage 30 provided in the base 11 in connection with a master cylinder (not shown) and a valve seat member 20 _O. The filter 32 on the outer periphery of the housing main 16 _O in the portion facing the annular chamber 27 _{O O}
Is mounted on the valve chamber 29 through the filter 32 _O.
Passage 33 _O for the _O providing communication to the annular chamber 27 _O is provided in the main housing body 16 _O. Furthermore between the valve seat member 20 _O and the filter 31 of the main housing body 16 _O, brake pressure passage hydraulic fluid of the annular chamber 27 _O to open when the pressure of the brake pressure passage 30 is lower than the annular chamber 27 _O 30
A check valve 34 for reflux is provided on the side.

The normally closed electromagnetic valve V _C is the valve operating unit 12
_C , a coil unit 13, and a magnetic path forming frame 14 mounted on the coil unit 13.

The valve actuation unit 12 _C is for the base end of the guide tube 15 _C closing the tip portion comprises a valve housing 17 _C made is continuously provided on the housing main body 16 _C, guide tube 15 _C of the distal portion The fixed core 18 _C fixed to the housing, the movable core 19 _C housed in the guide cylinder 15 _C and the housing main body 16 _C opposed to the fixed core 18 _C , and the valve seat member 20 fixed to the valve housing 17 _{C The} valve 21 _C fixed to the movable core 19 _C so as to be able to be seated on _C , and in the direction in which the movable core 19 _C is separated from the fixed core 18 _C , that is, in the direction in which the valve 21 _C is seated on the valve seat member 20 _C. the valve components of the spring 22 _C or the like return to the biasing is arranged in the valve housing 17 _C.

The main housing body 16 _C is formed in a cylindrical stepped a magnetic metal, at its one end a cylindrical linking tube 35 is coaxially connected to the and integrally. Guide tube 15
_C is intended to be formed on the non-magnetic material for example a thin cylindrical fixed core 18 _C at one end of the cylindrical sleeve 36 made of stainless steel has a distal end and a closed end of the hemispherical by being fixed, proximal end of the guide tube 15 _C is, as allowed to fitting the connection tubular part 35 at its proximal end portion, for example, is coupled to the main housing body 16 _C by welding.

[0019] base 11, its has fitting holes 23 _C stepped open to one surface 11a is bored as can fit the main housing body 16 _C, the open end toward the inner surface of the fitting hole 23 _C is retaining ring 2 engages the housing main 16 _C by preventing the withdrawal from the fitting hole 23 _C of the main housing body 16 _C
4 _C is fitted. Moreover fitting of the fitting hole 23 _C of the main housing body 16 _C, guide tube 15 _C in a fixed state substrate 1
1 protrudes from one surface 11a. Housing body 1
6 in two positions spaced in the axial direction of the outer surface of _C is mounted a sealing member 25 _C, 26 _C cyclic their seal member 25 _C, the base 11 between 26 _C and the main housing body between 16 _C annular chamber 27 _C is formed in the.

Housing body 16_CHas a cylindrical valve seat
Lumber 20_CIs press-fitted and fixed. Guide tube 15_CIn
Sleeve 36 and housing body 16_CFixed to
Core 18_CCore 19 with one end facing the other_CIs sliding
The valve seat member 20_CSpherical shape that can be seated on
Valve 21_CIs the movable core 19_CIs fixed to the other end. I
Kamo movable core 19_COne end and fixed core 18_CBetween
Is the movable core 19_CThat is, the valve element 21_CFixed core 18
_CFrom the valve seat member 20_CIn the direction to approach
Return spring 22 for urging_CIs stored. And movable core
19_CFixed core 18_CMagnetic attraction to the side
In the absence state, the valve body 21_CIs the valve seat member 20 _CSeated
In position.

[0021] Incidentally, the movable core 1 to the fixed core 18 _C side
When the 9 _C is brought into direct contact with the movable core 19 _C when brought into magnetically attracted to the fixed core 18 _C, delayed away operation from the fixed core 18 _C of the movable core 19 _C by the residual magnetism when releasing the magnetic attraction force Fixed core 1 to avoid
A magnet killer 37 made of a non-magnetic material shown in FIGS. 3 and 4 is interposed between 8 _C and the movable core 19 _C.
Also between the fixed core 18 _C and the movable core 19 _C, and that by working fluid confined in the valve chamber 29 _C between the movable core 19 _C and the valve seat member 20 _C is smooth operation of the movable core 19 _C is inhibited to avoid, on the outer surface of the movable core 19 _C over between its opposite axial ends 1 or a plurality of distribution grooves 38 ... are provided.

[0022] The magnet killer 37 is formed in a ring-shaped thin plate having a width D ₁ constant, for example, along the circumferential direction. On the other hand, the circulation grooves 38 ... depth D ₂ is set larger than the width D ₁ of the said magnet killer 37.
According to such a configuration, the guide tube 1 in the guide cylinder 15 in _C
5 even if the relative displacement occurs _C with respect to the movable core 19 _C of the magnet killer 37 in a plane perpendicular to the axis of, not that at least one of the flow channels 38 ... by the magnet killer 37 but would be closed, the movable core 19 _At one end of _C , all of the respective flow grooves 38 are in a state where a part thereof is always opened.

[0023] In FIG. 1, the annular chamber 27 on the outer periphery of the housing main 16 _C at a portion facing the _C and filter 32 _C is mounted, the filter 32 via the _C valve chamber 29 _C
The passageway 33 _C for providing communication to the annular chamber 27 _C is provided in the main housing body 16 _C. The base 11 has a brake pressure path 39 connected to a wheel brake (not shown).
Cross with provided continuous to the annular chamber 27 _O, 27 _C adjacent to the release path 40 connected to the reservoir (not shown) is provided continuous with the valve seat member 20 _C of the normally closed electromagnetic valves V _C.

The coil unit 13 includes the valve operating unit 1
A plurality of bobbins 41 having a center hole 41a for loosening the guide cylinders 15 _O ... 15 _{C of} 2 _O ... 12 _C are combined with the coils 42 wound around the bobbins 41. It is embedded in a mold part 43 made of resin. The mold part 43 is integrated with a rectangular frame body 44 to which the lid 55 is detachably attached while being fastened to the one surface 11a of the base 11, and is wound around each bobbin 41 and each bobbin 41. A plurality of coil corresponding portions 4 which are formed in a cylindrical shape by individually covering the coils 42
3a ... A conductor support member 45 made of synthetic resin is embedded in the mold portion 43 so as to be located between the arrangement positions of the normally-open solenoid valves V _O ... And the arrangement positions of the normally-closed solenoid valves V _C. The conductors 46 provided on the conductor support member 45 are connected to the respective coils 42.
In addition, the conductor supporting member 45 is integrally provided with a coupler 47 that protrudes outward from the frame body 44 in a state of being embedded in the mold portion 43.

Referring also to FIG. 5, the magnetic path forming frame 14 is formed.
Has a fitting hole 48 into which one end of the guide cylinders 15 _O and 15 _C protruding from one end of the coil corresponding portion 43a is fitted, and has a rectangular magnetic shape facing one end of the coil corresponding portion 43a. Road plate 49, fixed core _18O and connecting cylinder 3
5 is connected to a bottomed cylindrical magnetic path cylinder 52 having a through hole 50 for inserting any one of them at the center and a closed end of a dish-shaped contact part 51 facing the other end of the coil corresponding part 43a. It is made up of

A pair of connecting arms 53, 5 located on one diameter line are provided on the open end side of the magnetic path tube 52 having a bottomed cylindrical shape.
3 are integrally connected, and the ends of the connecting arms 53 are in contact with both ends of the magnetic path plate 49. Moreover, the connecting arm 5
A pair of caulking portions 53 provided on both sides of the tip of
are caulked and engaged with both ends of the magnetic path plate 49 which is in contact with the ends of the connecting arm portions 53, 53, whereby the magnetic path plate 49 and the magnetic path cylinder 52 are mutually engaged. Thus, the magnetic path forming frame 14 is formed.

The magnetic path forming frame 14 is provided with a coil corresponding portion 43.
a is inserted into the coil unit 13 by mutually connecting the magnetic path cylinder 52 into which the “a” is inserted and the magnetic path plate 49 facing one end of the coil corresponding section 43a. The distance between the magnetic path plate 49 and the contact portion 51 and the inner diameter of the magnetic path cylinder 52 are set so that the magnetic path forming frame 14 can be made to move freely, and the magnetic path forming frame 14 moves freely with respect to the coil corresponding portion 43a. To be mounted on the coil unit 13.

In the magnetic path forming frame 14, the magnetic path plate 4
The diameter of the fitting hole 48 provided in the guide cylinder 1 is
While the inner surface of the fitting hole 48 is set to such a degree that the inner surface of the fitting hole 48 contacts the outer surface of the guide cylinder 15 _O or 15 _C when any one of 5 _O and 15 _C is fitted, it is provided in the contact portion 51. The diameter of the insertion hole 50 is set to such an extent that the guide cylinders 15 _O and 15 _C can be loosened.

Further between each coil corresponding portions 43a ... at the other end a contact portion 51 of each magnetic path forming frame 14 ..., abut against the abutting portion 51 in any of the main housing body 16 _O, 16 _C The springs 54 that exert the resilience in the direction in which the springs 54 are contracted.

Next, the operation of this embodiment will be described. A plurality of magnetic path forming frames 14 for magnetically coupling the distal end portions of the guide cylinders 15 _O and 15 _C and the housing bodies 16 _O and 16 _C respectively include a coil. A plurality of bobbins 41 each wound with a plurality of bobbins 41 are embedded in a synthetic resin mold portion 43, and each bobbin 41 and the coil 42 are individually covered with a cylindrical coil formed in the mold portion 43. The bobbin 41 is mounted so as to be able to move freely with respect to the corresponding portion 43a.
_O and 15 _C are allowed to pass through. Therefore, the base 1
A plurality of valve operating units 12 _O ..., 12 _C mounted on 1
, And relative positional tolerances between the respective coil corresponding portions 43a in the coil unit 13 integrated with the frame body 44 fastened to the base body 11, are absorbed by the free movement of the magnetic path forming frames 14, and
In the center holes 41a of the bobbins 41, the guide cylinders 15 _O ,
15 _C ... are smoothly inserted, and each guide tube 15 _O ..., 1
5 _C can be fitted into the fitting holes 48 of the magnetic path forming frames 14, and the work of mounting the coil unit 13 to the base 11 can be facilitated.

Further, between the coil corresponding portions 43a and the magnetic path forming frames 14, the contact portions 51 of the magnetic path forming frames 14 are provided.
Are provided so as to urge the housing main bodies 16 _O , 16 _C in contact with the respective housing main bodies 16 _O , 16 _C , so that even if the magnetic path forming frame 14 can move freely with respect to the coil corresponding portion 43 a. housing main 16 the contact portion 51 ... at the time of mounting to the substrate 11 of the coil unit 13 _O ..., 16 _C
…, And the housing main body 16 _O …, 16
The magnetic coupling between _C and the magnetic path forming frames 14 can be ensured.

In the normally-closed solenoid valves V _C , the magnet killer 37 interposed between the fixed core 18 _C and the movable core 19 _C is provided at the depth of the flow grooves 38 provided on the outer surface of the movable core 19 _C. since the present invention is formed in a ring-shaped thin plate having a small width D ₁ than the D _2, flow channel 38 ...
Can be simplified by preventing the fixed core _18C and the movable core _19C from directly contacting each other while preventing any of them from being closed by the magnet killer 37.

Although the embodiments of the present invention have been described in detail, 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 appended claims. It is possible to do.

[0034]

According to the present invention as described above, according to the present invention, a plurality of valve operating units mounted on base body, the relative positional tolerance between each coil corresponding portions of the coil unit is attached to the substrate of the magnetic path forming frame Absorbed by play, smooth insertion of the guide cylinder into the center hole of each bobbin, and easy fitting of the guide cylinder into the fitting hole of the magnetic path forming frame facilitates the work of attaching the coil unit to the base. In addition, reliable magnetic path formation by the magnetic path forming frame can be achieved. And magnetic path
Make the forming frame securely contact the main body of the housing to form a magnetic path
The magnetic path can be more reliably formed by the frame.

[0035]

[Brief description of the drawings]

1 is a longitudinal sectional view of an electromagnetic valve device, and is a sectional view taken along line 1-1 of FIG. 2;

FIG. 2 is a plan view of FIG. 1 in a state where a cover is omitted.

FIG. 3 is a cross-sectional view showing a fixed core side end surface of a movable core in a normally closed solenoid valve.

FIG. 4 is a perspective view of a movable core and a magnet killer.

FIG. 5 is a perspective view of a magnetic path forming frame.

[Explanation of symbols]

11 ... substrate 12 _O, 12 _c ... valve actuation unit 13 ... coil unit 14 ... magnetic path forming frame 15 _O, 15 _C ... guide cylinder 16 _o, 16 _c ... housing main 17 _O , 17 _C: valve housing 18 _O , 18 _C: fixed core 19 _O , 19 _C: movable core 21 _O , 21 _C: valve element 22 _O , 22 _C: return spring 41 ... bobbin 41a ... center hole 42 ... coil 43 ... molded part 43a ... coil corresponding part 48 ... fitting hole 49 ... magnetic path plate 50 ... insertion hole 51 ... Abutting part 52 ... Magnetic path tube 54 ... Spring

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takeshi Taniguchi 3700 Wadayama, Shimonaka-machi, Sadohara-cho, Miyazaki-gun, Miyazaki Prefecture Inside Honda Lock Co., Ltd. (72) Inventor Naotoshi Tamai 840 Kokubu, Ueda-shi, Nagano Prefecture Nissin Kogyo Co., Ltd. (56) References JP-A-8-145224 (JP, A) JP-A-7-47938 ( JP, A) Hikaru Hei 6-61638 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F16K 31/06-31/11

Claims (1)

(57) [Claims] A guide cylinder (15 _O , 15 _C ) is fitted to a housing main body (16 _O , 16 _C ) fitted and fixed to a base (11).
_C ), a valve housing (17 _O , 1)
_7C ) and a fixed core ( _18O , _18C ) and a movable core (19C).
_O, 19 _C), a valve body (21 _O, 21 _C) and return a plurality of valve operating units valve components such as a spring (22 _O, 22 _C) is provided (12 _O, 12 _C), the Guide tube (1
5 _O , 15 _C ), a plurality of bobbins (41) having a central hole (41a), a plurality of coils (42) wound around each bobbin (41), and each coil (42).
And a plurality of magnetic path forming frames (14) for magnetically coupling the distal end portion of the guide cylinder (15 _O , 15 _C ) and the housing main body (16 _O , 16 _C ), A plurality of bobbins (41) each wound with a coil (42) are embedded in a mold part (43) made of synthetic resin, and a coil unit (13) is attached to the base (11). ) And a plurality of coils (42) wound around the bobbins (41) are individually covered and opposed to one end of a cylindrical coil corresponding portion (43a) formed in a mold portion (43). guide
Fitting hole for fitting the tip of the tube (15 _O , 15 _C )
A magnetic path plate (49) having (48) is provided in the coil corresponding portion.
(43a) is formed into a bottomed cylindrical shape so as to be inserted.
And opposes the other end of the coil corresponding portion (43a).
Of the magnetic path cylinder (52) with the contact portion (51)
A plurality of magnetic path forming frames (14) connected to the mouth end are
Each of the coil corresponding portions (43a) is movably mounted on each of the coil corresponding portions (43a), and is provided in the contact portion (51) of the magnetic path forming frame (14).
The insertion hole (50) provided in the center and each bobbin (4
Each guide tube (15 _O , 1) is inserted into the center hole (41a) of 1).
5 _C ) is loosened , and each coil corresponding part (43a) and each coil
Each magnetic path shape is provided between the contact portions (51) of the magnetic path forming frame (14).
The contact portion (51) of the forming frame (14) is mainly composed of each housing.
(16 _O, 16 _C) to a spring which biases the abutting direction (5
4) Each of which is provided.
Place.