JP2000046221A - Solenoid valve device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost and to improve the assembly efficiency by a simple constitution. SOLUTION: A solenoid valve is provided with a housing 7 having a recessed part 7a, a sleeve 2 provided with a large diameter part 21 which is press-fitted in the recessed part 7a and caulked by the deformation of an opening peripheral edge part 7e of the recessed part 7a so as to be expanded in the recessed part 7a, a coil 3, a fixed core 5, a movable core 6, and an annular groove 7d which is arranged in the housing 7 and suppresses the expansion of a part opposite to the large diameter part 21 inward of the recessed part 7a at a peripheral wall part 7c of the recessed part 7a during the deformation of the opening peripheral edge part 7e.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a solenoid valve device.

[0002]

2. Description of the Related Art A conventional solenoid valve device is disclosed in German Patent Publication DE4.
As disclosed in JP-A-332538A1, a sleeve, a coil wound around the outer periphery of the sleeve, a fixed core fixed in an assembly hole of the sleeve, and slidable in the assembly hole of the sleeve. A movable core that is moved toward the fixed core by energizing the coil, a housing having a recess into which the sleeve is inserted and into which a working fluid is introduced, and an outer peripheral portion of the sleeve. A seal member disposed between a portion to be inserted into the concave portion and a peripheral wall portion of the concave portion, and a caulking member formed by deforming an opening peripheral portion of the concave portion so as to protrude into the concave portion. Things.

[0003]

However, such a conventional solenoid valve device requires a seal member, which hinders an increase in the number of parts, an increase in cost, and an improvement in assembly efficiency. Was.

An object of the present invention is to provide a solenoid valve device which has a simple structure to reduce the cost and improve the assembling work efficiency.

[0005]

In order to solve the above-mentioned problems, a housing having a recess is provided, wherein the housing is press-fitted into the recess and the opening peripheral portion of the recess is deformed so as to protrude into the recess. A sleeve provided with an engaging portion swaged by a coil, a coil wound around the outer periphery of the sleeve, a fixed core fixed in an assembly hole of the sleeve, and slidable in the assembly hole of the sleeve. A movable core that is disposed and is moved toward the fixed core by energizing the coil; and a movable core that is disposed in the housing and faces the engaging portion at a peripheral wall portion of the recess when the opening peripheral portion is deformed. The electromagnetic valve device is provided with a suppressing portion that suppresses a portion to be projected toward the inside of the concave portion.

Preferably, the electromagnetic valve device is characterized in that the suppressing portion is an annular groove formed in the peripheral wall portion.

[0007] Preferably, an electromagnetic valve device in which a working fluid is introduced into the concave portion between at least a portion where the engaging portion is located in the concave portion and a bottom portion of the concave portion.

According to the first aspect of the present invention, the engaging portion of the sleeve is press-fitted into the concave portion of the housing and the peripheral portion of the opening of the concave portion is deformed, whereby the engaging portion is swaged to the housing and the sleeve is fixed to the housing. Is done. When the peripheral edge of the opening of the concave portion is deformed, the suppressing portion prevents the portion of the peripheral wall portion of the concave portion facing the engaging portion from projecting into the concave portion.

According to a second aspect of the present invention, in addition to the operation of the first aspect, the annular groove formed in the peripheral wall of the concave portion has the suppressing portion engaged with the peripheral wall portion of the concave portion when the peripheral edge of the concave opening is deformed. The portion opposing the portion is prevented from protruding into the recess.

According to the third aspect of the present invention, there is provided a solenoid valve device.
Alternatively, in addition to the function of claim 2, a working fluid is introduced into the recess.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to embodiments.

FIG. 1 is a sectional view of a solenoid valve device 1 according to an embodiment of the present invention, which is provided in a brake hydraulic device of a vehicle, before a sleeve 2 is crimped to a housing 7.
FIG. 3 is a cross-sectional view after the sleeve 2 of the solenoid valve device 1 of FIG. As shown in FIGS. 1 and 2, the electromagnetic valve device 1 includes a sleeve 2 made of a magnetic material, a coil 3 wound around the outer circumference of the sleeve 2, and a yoke 4 made of a magnetic material surrounding the outer circumference of the coil 3. A stationary core 5 made of a magnetic material, a movable core 6 made of a magnetic material, and a metal housing 7 to which the sleeve 2 is attached.

The sleeve 2 has a bottomed cylindrical shape, extends in the axial direction (vertical direction in FIGS. 1 and 2), and has an opening on one side (lower side in FIGS. 1 and 2). A hole 2a is provided. The fixed core 5 having a substantially cylindrical shape is a sleeve 2
Is fixedly arranged in the mounting hole 2a such that one end surface thereof is in contact with the bottom 2b.

The movable core 6 is disposed in the mounting hole 2a of the sleeve 2 so that the movable core 6 can slide in the axial direction of the sleeve 2 and one end face of the movable core 6 and the other end face of the fixed core 5 face each other. . The movable core 6 has, on one end surface thereof, a concave portion 6a opened on the fixed core 5 side, and a spherical valve body 6b at the other end portion.

A spring 13 is provided between the bottom surface 2b of the sleeve 2 and the bottom surface of the concave portion 6a of the movable core 6. The spring 13 urges the movable core 6 in a direction away from the fixed core 5. In the initial state where the coil 3 shown in FIGS. 1 and 2 is not energized, a predetermined amount of clearance is provided between the fixed core 5 and the movable core 6.

The housing 7 has a recess 7a in which the sleeve 2 is mounted and which extends in the axial direction of the sleeve 2. The sleeve 2 is assembled so that the opening 2c is closed in the recess 7a.

One side opening 8a of the first communication passage 8 communicates with the bottom surface 7b of the recess 7a of the housing 7. The other side opening (not shown) of the first communication passage 8 communicates with a brake hydraulic pressure path (not shown). In the peripheral wall portion 7c of the concave portion 7a,
One side opening 9a of the second communication passage 9 communicates. The other side opening (not shown) of the second communication passage 9 is connected to a brake hydraulic pressure path (not shown).

That is, the inside of the sleeve 2 and thus the recess 7a
Of the sleeve 2 where the large diameter portion 21 is located and the bottom 7b
In between, the brake fluid is introduced from each brake fluid pressure path via the first and second communication passages 8 and 9.

On the side of the opening 2c of the sleeve 2, the second communication passage 9 is formed.
A communication hole 2d extending in the axial direction perpendicular to the sleeve 2 (the left-right direction in FIGS. 1 and 2) is formed in the outer peripheral portion facing the one-side opening 9a. The communication hole 2d communicates the outer peripheral space of the sleeve 2, that is, the one side opening 9a of the second communication passage 9 with the space in the mounting hole 2a of the sleeve 2.

At the side of the opening 2c of the sleeve 2, an assembling hole 2a is formed.
Inside, a substantially cylindrical filter 10 is disposed so as to face the communication hole 2d. Further, the opening 2 of the sleeve 2
The base member 11 is press-fitted and fixed to c. The filter 10 is sandwiched and fixed between a step portion of the mounting hole 2 a of the sleeve 2 and a step portion of the base member 11.

A third communication passage 12 extending in the axial direction of the sleeve 2 is formed in the base member 11. The third communication passage 12 has one side opening 12a communicating with the surface 11a of the base member 11 facing the bottom 7b of the concave portion 7a of the housing 7, and the other side opening 12b is connected to the base member 11
Is connected to a portion 11b facing the movable core 6.

At a portion 11b of the base member 11 facing the movable core 6, a valve seat 11c with which the spherical valve element 6b of the movable core 6 comes into contact with and separates from a peripheral edge of the other opening 12b of the third communication path 12. Is formed. The third communication path 12 enables communication between the first communication path 8 and the inside of the assembling hole 2a, and furthermore, the second communication path 9.

When the valve body 6b comes into contact with the valve seat 11c, the communication between the third communication passage 12 and the inside of the assembling hole 2a, and furthermore, the communication with the second communication passage 9 is cut off, and the valve body 6b is detached from the valve seat 11c. By doing so, the third communication path 12 and the assembly hole 2a
And the second communication path 9.

The sleeve 2 extends from the opening 2a side to the bottom 2b.
It has a large diameter portion 21 (engaging portion) and a small diameter portion 22 that are continuous to the side. The diameter of the large-diameter portion 21 is substantially equal to the diameter of the concave portion 7a and is press-fitted into the concave portion 7a, and the opening peripheral edge 7e of the plastically-deformed concave portion 7a has a tapered shape between the large-diameter portion 21 and the small-diameter portion 22. The large diameter portion 21 is caulked to the housing 7 by engaging with the step portion 23.

An annular groove 7d is formed at a portion of the concave portion 7a facing the large diameter portion 21 of the peripheral wall portion 7c and closest to the opening 7a.

In mounting the solenoid valve device 1, first, the fixed core 5 is fixed in the mounting hole 2a of the sleeve 2, and then the spring 13 is disposed in the center hole of the fixed core 5 in the mounting hole 2a. .

Further, the movable core 6 is disposed in the mounting hole 2a with a predetermined distance from the fixed core 5 by the urging force of the spring 13, and the filter 10 is opened in the mounting hole 2a more than the movable core 5. It is provided by the unit 2c.

The base member 1 is inserted into the opening 2c of the mounting hole 2a.
When the filter 1 is press-fitted and fixed, the filter 10 is sandwiched and fixed between the base member 11 and the sleeve 2, and the valve element 6b of the movable core 6 comes into contact with the valve seat 11c. Base member 1
1 is provided on the sleeve 2 so that the filter 1
0 and the movable core 6 are prevented from coming off from the sleeve 2.

Next, the sleeve 2 integrally including the fixed core 5, the movable core 6, the filter 10, the base member 11, and the spring 13 is assembled to the recess 7a of the housing 7, and the large-diameter portion 21 is recessed. 7a.

After the sleeve 2 is pressed into the concave portion 7a of the housing 7, a load is applied to the opening peripheral portion 7e of the concave portion 7a in the axial direction of the concave portion 7a toward the bottom surface 7b, so that the opening peripheral portion 7e is plastically deformed. Due to the plastic deformation of the opening peripheral portion 7e, the opening peripheral portion 7e protrudes into the concave portion 7a radially inward of the concave portion 7a and engages with the step portion 23 of the sleeve 2.

The plastically deformed opening peripheral edge 7e corresponds to the step 2
3, especially the large diameter portion 21 of the sleeve 2
Is swaged by the housing 7, and the sleeve 2 is fixed to the housing 7.

When the opening peripheral edge 7e is plastically deformed, the annular groove 7d is formed in the peripheral wall 7c of the concave portion 7a, so that the opening peripheral edge 7e of the peripheral wall 7c is opposed to the large diameter portion 21. Transmission of the applied load is suppressed.

Therefore, during the plastic deformation of the opening peripheral edge 7e, the portion of the peripheral wall 7c facing the large-diameter portion 21 can be suppressed from being plastically deformed and protruding radially inward of the concave portion 7a. The possibility that the sleeve 2 receives a pressing force inward in the radial direction from the peripheral wall portion 7c due to the plastic deformation of the peripheral edge portion 7e can be reduced.

Since the possibility that the sleeve 2 is pressed from the peripheral wall 7c can be reduced, for example, the fixed core 5 and the movable core 6 are pressed by the sleeve 2 being pressed from the peripheral wall 7c and deforming inward in the radial direction. Or the clearance between the outer peripheral portion of the movable core 6 and the inner peripheral portion of the sleeve 2 may change to change the sliding of the movable core 6 into the sleeve 2. Can be reduced, and the expected operation of the electromagnetic valve device 1 can be obtained.

Next, the coil 3 and the yoke 4 are disposed on the outer peripheral portion of the sleeve 2 protruding outside the concave portion 7a.

In the electromagnetic valve device 1, when the coil 3 is energized, an attractive force is generated between the fixed core 5 and the movable core 6, and the movable core 6 is moved toward the fixed core 5 against the urging force of the spring 13. Moved to When the movable core 6 is moved toward the fixed core 5, the valve body 6b is separated from the valve seat 11c, and the first communication path 8 is connected to the third communication path 12, between the valve body 6b and the valve seat 11c. , The inside of the recess 7a, the filter 10, and the communication hole 2d.

When the energization of the coil 3 is terminated, the attractive force between the fixed core 5 and the movable core 6 disappears, and the spring 1
The movable core 6 is biased by the biasing force of 3 in a direction away from the fixed core 5. Since the movable core 6 is moved toward the base member 11 by the spring 13, the valve element 6 b and the valve seat 11 c come into contact with each other, and the second communication path 9 via the third communication path 12 of the first communication path 8 is connected to the second communication path 9. Communication is interrupted.

Since the particularly large-diameter portion 21 of the sleeve 2 is press-fitted into the concave portion 7a of the housing 7, the large-diameter portion 21 of the sleeve 2 and the portion facing the large-diameter portion 21 of the peripheral wall portion 7c of the concave portion 7a. A sealing function is generated between the two, and the outflow of the brake fluid from the second communication passage 9 to the outside of the housing 7 through the space between the large diameter portion 21 and the peripheral wall portion 7c is suppressed.

Further, when assembling the sleeve 2 to the housing 7, the portion of the peripheral wall portion 7c, especially the portion facing the large-diameter portion 21, can be suppressed from being plastically deformed and protruding into the concave portion 7a. Seal between the large-diameter portion 21 and the peripheral wall 7c of the recess 7a can be ensured.

As described above, according to the solenoid valve device 1 of the present embodiment, in order to prevent the brake fluid introduced into the recess 7a from flowing out of the housing 7, it is necessary in the conventional one. Since there is no need to dispose a sealed member, a simple configuration can be achieved.

Therefore, the solenoid valve device 1 has a simple structure to reduce the cost and improve the efficiency of the assembling operation.
It is possible to provide.

Further, since the possibility that the sleeve 2 is pressed from the peripheral wall portion 7c during the plastic deformation of the opening peripheral portion 7e can be reduced, for example, the sleeve 2 can be
The possibility that the clearance set between the fixed core 5 and the movable core 6 is changed by being pressed from c and deforming radially inward can be reduced, and the expected operation of the solenoid valve device 1 can be obtained. It is possible.

Further, the large diameter portion 21 of the sleeve 2 and the concave portion 7a
Sealing between the peripheral wall 7c and the peripheral wall 7c can be ensured.

In the present embodiment, the solenoid valve device 1 is a normally closed valve. However, the present invention is not particularly limited to this configuration. A similar effect can be obtained.

Further, in the present embodiment, the opening peripheral portion 7e is plastically deformed by receiving a load, but the present invention is not particularly limited to this method, and the opening peripheral portion 7e may protrude into the concave portion 7a. In the solenoid valve device according to the present invention, the same operation and effect can be obtained.

Further, in the present embodiment, the sleeve 2 has the large-diameter portion 21 as the engaging portion, but the present invention is not particularly limited to this configuration, and the sleeve 2 may be engaged with the opening peripheral portion 7e. Accordingly, a similar operation and effect can be obtained in the solenoid valve device of the present invention having a configuration that is caulked to the housing 7.

Although the present invention has been described based on the above embodiments, the present invention is not limited to only the above embodiments, but includes various embodiments according to the principle of the present invention.

[0048]

As described above, according to the first aspect of the present invention, there is no need to dispose a seal member required in the prior art, so that a simple configuration can be achieved.

Further, when the peripheral portion of the opening of the concave portion is deformed,
Since the possibility that the sleeve is pressed from the peripheral wall of the concave portion can be reduced, it is possible to obtain the expected operation of the solenoid valve device.

Further, it is possible to ensure the sealing between the sleeve and the peripheral wall of the recess.

Therefore, it is possible to provide a solenoid valve device which has a simple structure and reduces costs and improves assembly work efficiency.

According to the second aspect of the present invention, in addition to the effects of the first aspect of the present invention, a better mode of the suppressing portion is shown.

According to the third aspect of the invention, in addition to the effects of the first or second aspect, a sealing function is provided between the engagement portion of the sleeve and the peripheral wall of the concave portion. It is possible to prevent the working fluid introduced into the concave portion from flowing out of the concave portion via the space between the engaging portion of the sleeve and the portion of the peripheral wall portion of the concave portion facing the engaging portion.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an electromagnetic valve device 1 according to an embodiment before deformation of an opening peripheral portion 7e.

FIG. 2 is a cross-sectional view of the solenoid valve device 1 of FIG. 1 after deformation of an opening edge 7e.

[Description of Signs] 1 Solenoid valve device 2 Sleeve 2a Assembly hole 21 Large diameter portion 3 Coil 5 Fixed core 6 Movable core 7 Housing 7a Concave portion 7b Bottom portion 7c Peripheral wall portion 7d Annular groove 7e Opening edge

Claims (3)

[Claims] A housing provided with a concave portion; a sleeve provided with an engaging portion which is press-fitted into the concave portion and is caulked by being deformed so that an opening peripheral portion of the concave portion projects into the concave portion; A coil wound around the outer periphery of the sleeve, a fixed core fixed in the mounting hole of the sleeve, and slidably disposed in the mounting hole of the sleeve,
A movable core that is moved toward the fixed core by energizing the coil; and a portion that is disposed on the housing and that faces the engaging portion on the peripheral wall of the recess when the opening peripheral edge is deformed. An electromagnetic valve device comprising: a suppressing portion that suppresses protrusion toward the inside of the concave portion. 2. The solenoid valve device according to claim 1, wherein said suppressing portion is an annular groove formed in said peripheral wall portion. 3. In the concave portion, at least between a portion where the engaging portion is located in the concave portion and a bottom portion of the concave portion,
3. The solenoid valve device according to claim 1, wherein a working fluid is introduced.