JP3580046B2 - Plunger storage sleeve fixing device for solenoid valve - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The invention of this application relates to a solenoid valve used for a brake fluid pressure control valve or the like of an anti-lock brake device for a vehicle, and in particular, stores a plunger that reciprocates by energizing and de-energizing an electric coil to open and close a valve member. The present invention relates to a device for fixing a sleeve to be fixed to a valve housing.
[0002]
[Prior art]
As a conventional solenoid valve of this type, one described in JP-A-6-241342 can be mentioned. In this solenoid valve, a tapered flange is formed at the other end of the sleeve having one end closed and the other end opened, and a hole for inserting the other end of the sleeve is formed in the valve housing. Is an under-face that has an annular gap between a stepped part that receives the core and a tapered step that receives the core and that has a tapered stepped part that receives the tapered flange part of the sleeve. A cut portion is provided, and the sleeve is liquid-tightly fixed to the valve housing by pushing the annular spacer into the hole until the tip of the annular spacer is plastically deformed and bites into the annular gap.
[0003]
[Problems to be solved by the invention]
In the above-described solenoid valve, a high hydraulic pressure is applied to the inside of the sleeve, and when the hydraulic pressure is applied to the tapered flange portion of the sleeve or more than the restoring bending stress, the sleeve comes off.
[0004]
An object of the invention of this application is to provide a fixing device for fixing a sleeve using an annular spacer, in which a restoring bending stress of a sleeve at a flange portion of the sleeve is improved as compared with a conventional device.
[0005]
[Means for Solving the Problems]
A plunger storage sleeve fixing device for an electromagnetic valve according to the invention of the present application according to the above object, in which the other end of a sleeve whose one end is closed and the other end is opened is liquid-tightly fixed to a valve housing and arranged on the outer peripheral side of the sleeve. An electromagnetic valve in which a plunger that reciprocates by energizing and deenergizing an electric coil to open and close a valve member is housed in the sleeve, wherein a flange portion is formed at the other end of the sleeve, and A hole into which the other end is inserted is formed in the housing, and a deep portion of the hole faces the stepped portion for receiving the flange portion and the flange portion received by the stepped portion with an annular gap. An undercut portion is provided, and the sleeve is pushed into the hole by pushing the annular spacer into the hole until the tip thereof is plastically deformed and bites into the annular gap. The electromagnetic valve is fixed to the managing, the flange portion of the sleeve as well as a substantially right angle formed with respect to the outer peripheral surface of the sleeve, having a tapered outer peripheral surface between said annular spacer and said flange portion of said sleeve In this example, a sub-circular spacer having a substantially right-angled triangular cross section is interposed .
[0006]
In the fixing device having such a configuration, since the flange portion of the sleeve is substantially perpendicular to the outer peripheral surface of the sleeve, the restoring bending stress of the flange portion is improved by several steps as compared with the conventional device, and therefore, the fluid is higher than the conventional device. Can withstand pressure.
[0007]
Embodiment
Hereinafter, an embodiment of a plunger housing sleeve fixing device for an electromagnetic valve according to the present invention will be described with reference to the drawings.
[0008]
FIG. 1 is a sectional view of a solenoid valve, in which a valve housing 11 of a solenoid valve 10 is formed with a stepped hole 12 and hydraulic passages 13, 14, 15. In the hole 12, a sleeve 17 made of a non-magnetic material having a closed upper end and an open lower end and containing a plunger 16 made of a magnetic material, and a small-diameter portion inserted into the sleeve from the opening of the sleeve 17. A core 18 made of a magnetic material having a large diameter portion located outside the sleeve 17 is inserted and fixed by a fixing device 19.
[0009]
A hydraulic chamber 20 is defined in the hole 12 by a core 18, and a valve seat member 21 having a through hole communicating the hydraulic chamber 20 with the hydraulic passage 13 is fixed to the valve housing 11. . A rod 22 that penetrates the core 18 in a vertically slidable manner is connected to the plunger 16 at an upper end thereof, and has a valve member 23 formed at the lower end thereof for opening and closing a center hole of a valve seat member. . The spring 24 disposed in the sleeve 17 urges the plunger 16 and the rod 23 upward, and separates the valve member 23 from the valve seat member 21 to open the solenoid valve 10. The hydraulic passages 14 and 15 communicate with the hydraulic chamber 20.
[0010]
An electric coil 25 is arranged outside the valve housing 11 so as to surround the outer periphery of the sleeve 17 and is fixed to the valve housing 11. When the electric coil 25 is energized, a suction force for displacing the plunger 16 downward is generated between the plunger 16 and the core 18, and the plunger 16 and the rod 22 are displaced downward against the urging force of the spring 24. Then, the valve member 23 comes into contact with the valve seat member 21 to close the center hole of the valve seat member 21, and the solenoid valve is closed.
[0011]
FIG. 2 is an enlarged view of the fixing device 19 shown in FIG. As shown in FIGS. 1 and 2, the fixing device 19 has a flange portion 26 formed at a lower end of the slab 17 at a substantially right angle to the outer peripheral surface of the sleeve 17, and a core 18 at the back of the hole 12 of the valve housing 11. A step 27 for receiving the large diameter portion from below is formed, the flange portion 26 of the sleeve 17 is received by the large diameter portion of the core 18 from below, and a sub-circular triangular cross section having a tapered outer peripheral surface is provided. The spacer 28 is fitted on the outer periphery of the sleeve 17 and received from below by the flange portion 26. An undercut portion 29 is formed in the valve housing 11 to face the outer peripheral surface of the sub-annular spacer 28 with an annular gap. The annular spacer 30 is fitted around the outer periphery of the sleeve 17 and the front end (lower end) of the annular spacer 30 is plastically deformed from the entrance into the hole 12 so that the annular gap 30 is eaten. Which is constituted by pushing up writing. The large-diameter portion of the core 18 is press-fitted into the hole 12 to make the space between the core 18 and the peripheral wall of the hole 12 liquid-tight, and the load between the annular spacer 30 and the flange portion 26 and the core 18 to be liquid-tight. . The sub-annular spacer 28 is for reducing the pushing load required for plastically deforming the distal end of the annular spacer 30.
[0012]
In the fixing device 19, since the flange portion 26 of the sleeve 17 is substantially perpendicular to the outer peripheral surface of the sleeve 17, the restoring bending stress of the flange portion 26 is high, and the retaining force against the hydraulic pressure applied to the inside of the sleeve 17 is reduced. In other words, the breakdown voltage performance is improved.
[0014]
The step for receiving the flange 26 of the sleeve 17 may be formed directly on the valve housing 11.
[0015]
【The invention's effect】
In the plunger housing sleeve fixing device for an electromagnetic valve according to the invention of the present application, since the flange portion of the sleeve is substantially perpendicular to the outer peripheral surface of the sleeve, the restoring stress of the flange portion is large, and the pressure resistance performance is high.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an embodiment of the present invention.
FIG. 2 is an enlarged view of a main part of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Solenoid valve 11 ... Valve housing 12 ... Hole of valve housing 16 ... Plunger 17 ... Sleeve 19 ... Sleeve fixing device 26 ... Flange 27 ... Step 28 ... Sub-circular spacer 29 ... Undercut part 30 ... Circular spacer

Claims (1)

The other end of the sleeve, one end of which is closed and the other end of which is opened, is fixed to the valve housing in a liquid-tight manner, and the valve is opened and closed by reciprocating displacement by energizing / de-energizing an electric coil disposed on the outer peripheral side of the sleeve. A solenoid valve in which a plunger is housed in the sleeve, wherein a flange is formed at the other end of the sleeve, and a hole for inserting the other end of the sleeve is formed in the housing. Is provided with an undercut portion facing the flange portion and an annular gap between the flange portion and the flange portion received by the step portion. the electromagnetic valve fixing the sleeve on the valve housing by the deformation to push up bites into the annular gap, the flange portion of the sleeve of the sleeve Substantially as well as right angle formed relative to the circumferential surface, characterized in that by interposing a sub annular spacer of substantially right triangular section having a tapered peripheral surface between said annular spacer and said flange portion of said sleeve , Solenoid valve plunger storage sleeve fixing device.

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