JPH0141982Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a yoke mounting device for a solenoid valve in which a yoke for fixing a fixed iron core is caulked to an opening of a metal case.

In this type of device, the yoke to be caulked remains exposed to the outside, and various kinds of gaskets are applied inside the yoke to prevent rainwater from entering through the caulked portion, but these are not installed properly. This has disadvantages such as being complicated and deforming during caulking.

The purpose of the present invention is to improve such inconveniences, and to make it possible to easily and accurately attach the packing by combining it with a bobbin holder that supports the bobbin.

To explain this with reference to the illustrated embodiment, reference numeral 1 indicates a metal case 1, and the case 1 includes an annular bobbin 3 that holds a coil 2, a movable iron core 4 and a fixed iron core that are inserted into the inner cylinder of the bobbin 3. A core 5 is provided, and the movable iron core 4 projects outside the case 1 through a through hole in an end cover formed integrally with the case 1, and the fixed iron core 5 is caulked to the opening of the case 1. It is fixed to a yoke 6, and the yoke 6 has a cord 7 and a pull-out hole 8. Reference numeral 9 indicates a bobbin holder that supports the bobbin 3, and the bobbin holder 9 is formed as an annular plate that is fitted around the outer periphery of the fixed iron core 5.
It has a cord 7 extraction hole 10 on its plate surface, and its back surface is formed into a middle high surface 9c via inclined surfaces 9a and 9b on the inner and outer peripheries as shown in FIG. Three protrusions 11 are provided at equal intervals. Reference numeral 12 indicates a packing made of an elastic body such as rubber, and the packing 12 is attached to the bobbin receiver 9.
and the yoke 6, and is formed into an annular shape so as to be overlapped with the bobbin receiver 9, and as shown in FIG. Inner and outer ring-shaped lips 12a and 12b are provided which come into contact with the inner and outer ring-shaped lips 12a and 12b, and a cord guiding protrusion 12c that is press-fitted into the pull-out hole 10 is provided on the back surface of the lip, and a through-hole 13 into which the protrusion 11 fits is provided on the plate surface. The depth of the through hole 13, that is, the plate thickness of the gasket 12 is formed to be slightly thicker than the height of the protrusion 11, and the gasket 12 is compressed into the through hole 13 by caulking the yoke 6. The protrusion 11 to be fitted is formed so as to come into contact with the yoke 6.

In the figure, 14 is a mounting plate, 15 is an O-ring, and 16 is a spring.

In this way, according to the present invention, the yoke 6 is held in the metal case 1 by caulking into the opening, and the yoke 6 is held between the bobbin 3 and the yoke 6 in the case 1, and is fitted onto the outer periphery of the fixed iron core 5. An annular bobbin receiver 9 and a packing 12 are superposed and provided, and the bobbin receiver 9
The back surface is formed into a middle high surface 9c via the inner and outer periphery inclined surfaces 9a, 9b, and a plurality of protrusions 1 are formed on the middle high surface 9c.
1, and the packing 12 is provided with lips 12a, 12b that contact the inclined surfaces 9a, 9b.
and a through hole 13 into which the projection 11 fits, and the thickness of the gasket 12 at the through hole 13 portion is formed to be slightly thicker than the height of the projection 11. The bobbin receiver 9 and the packing 12 that are superimposed are attached to the protrusion 1 when the yoke 6 is caulked.
The packing 12 is compressed until the lips 12a, 1 of the packing 12 come into contact with the yoke 6.
2b is in close contact with the inclined surfaces 9a and 9b on the inner and outer peripheries of the bobbin receiver 9, and its cord guiding protrusion 12c is press-fitted into the pull-out hole 8 of the yoke 6 to complete the sealing, and the bobbin receiver 9 is attached to the protrusion. Since the bobbin 11 comes into contact with the yoke 6 and is pressed down by the yoke 6, the bobbin 3 is held securely without being moved due to vibrations, etc., and it is possible to prevent the coil in the bobbin from breaking.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a sectional view, and FIG. 2 is a perspective view of a bobbin support and a packing. 1... Metal case, 3... Bobbin, 5... Fixed iron core, 6... Yoke, 8... Cord extraction hole, 9...
...Bobbin holder, 9a, 9b...Slanted surface, 9c...Mid-high surface, 11...Protrusion, 12...Puttle, 12
a, 12b...lip, 12c...cord guiding protrusion, 13...through hole.

Claims (1)

[Scope of utility model registration request] In a yoke mounting device for a solenoid valve in which a yoke 6 for fixing a fixed iron core 5 is caulked to an opening of a metal case 1, a bobbin 3 inside the case 1 and the yoke 6 are attached inside the metal case 1. An annular bobbin receiver 9 and a packing 12 are provided, which are sandwiched between the two sides and fitted onto the outer periphery of the fixed iron core 5.
a, 9b on the middle high surface 9c, a plurality of protrusions 11 are provided on the middle high surface 9c, and a cord guiding protrusion 12c is press-fitted into the cord pull-out hole 8 provided in the yoke 6 in the packing 12. and lips 12a and 12b that contact the inclined surfaces 9a and 9b, and a through hole 13 into which the projection 11 fits, and the thickness of the packing 12 at the through hole 13 portion is slightly thicker than the height of the projection 11. A solenoid valve yoke mounting device characterized by a thick wall.