JP2002188746A - Direct-acting valve system multi-port solenoid valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that an approximately U-shaped solenoid yoke 45 is easily removed from a guide cylinder outer surface cut-in part 14 of a two-port valve body 16 by tensile strength, etc., of hoses (tubes) connected to an in-port 11 and an out-port 12 in a conventional direct-acting valve system two-port solenoid valve 10. SOLUTION: A plurality of projections 46 are provided at one piece 42 of an approximately U-shaped solenoid yoke 45 and an engagement flange part 26 for fixing a multi-port valve body is provided on a two port valve body 27. The engagement flange part 26 is contacted with the projections 46 to prevent a turn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct-acting valve type multi-port solenoid valve which is installed in a flow path of a fluid such as air and opens and closes a valve seat with a seat seat fixed to a movable iron core. Yes, and more specifically to improvements in assemblability and reliability.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-Open No. H11-24802.
As disclosed in Japanese Unexamined Patent Publication No. 2 (1994) -210, a substantially U-shaped solenoid yoke 40 is provided as a recyclable direct-acting valve type 2-port solenoid valve (normally open type, normally closed type) which can be easily disassembled.
One piece 42 is provided with a substantially snap-retainer-like guide tube holding groove 41, and at least one slit 44 is provided in the yoke 40 from the guide tube holding groove 41 toward the other piece 43 of the yoke 40. A two-port valve body having a solenoid yoke 40, an import 11 (may be an outport), an outport 12 (may be an import), a guide tube 13, a guide tube outer surface cutout portion 14, and a valve seat 15 ( For example, a two-port, single-acting, direct-acting valve system comprising: a polypropylene resin 16, a solenoid 30 mounted around the two-port valve body 16, and a fixing member 21 inserted into the two-port valve body 16. A solenoid valve 10 is known.
(See FIGS. 1, 2 and 3.)

More specifically, a movable core (also called an adsorption core, armature) of a magnetic member to which a seating sheet 17 of a soft elastic member (for example, silicon rubber) is fixed is provided inside the guide cylinder 13 of the two-port valve body 16. , A plunger) 18, a compression coil spring (for example, stainless steel wire) 19 which constantly urges the movable iron core, and a hermetic packing (for example, O-ring) 20 attached to the outer peripheral portion of a fixed member (normally closed type) Uses a fixed iron core, but a fixed iron core and / or a component other than the fixed iron core may be used in order to change to a normally open type) 21 is inserted.

A copper wire (for example, an enamel insulated wire, a polyurethane insulated wire,
A polyimide insulated wire 31 is connected to a cylindrical bobbin (for example,
A solenoid (for example, soldering, fusing, spot welding, or laser welding) connected to a terminal piece (for example, Faston terminal # 250) 33 or a lead wire (for example, polyvinyl chloride insulated wire) 33 wound around a nylon resin (32). An excitation coil, a winding, and a closure ring) 30 are mounted, and the solenoid 30 is sandwiched between the solenoid fixing flange 23 and the other piece 43 of the solenoid yoke 40.

[0005] In terms of assembly, the piece 42 of the solenoid yoke 40 is inserted into the guide tube outer surface cutout 14
The fixing member 21 and the solenoid 30 are also fixed by external fitting.

[0006]

However, in the conventional single-acting direct-acting valve type two-port solenoid valve 10, the tensile stress of the hoses (tubes) connected to the import 11, the out port 12, etc. The solenoid yoke 4 is inserted from the cutout 14 on the outer surface of the guide cylinder of the two-port valve body 16.
There is a problem of reliability that 0 easily comes off. Also, there is a problem in that the two-port valve body 16 rotates even if it does not come off, so that the import 11 and the like do not face the prescribed direction.

[0007] The present invention has been made in view of such problems of the prior art, and has as its object to improve the assemblability and reliability as well as to reduce the number of parts as a measure for recycling. An object of the present invention is to provide a simple or multiple direct-acting valve type multi-port solenoid valve that can be easily attached and detached.

[0008]

In order to achieve the above object, a direct-acting valve type multi-port (two or three ports) solenoid valve of the present invention (single type or multiple type) may be used.
Is a substantially U-shaped solenoid yoke (for a single type or for a multiple type), a solenoid, a locking flange for fixing a multi-port valve body, and an import (one or more).
And a multiport valve body having a guide tube, a guide tube outer surface cut-out portion, and a valve seat (one or more) may be provided. One piece is provided with a substantially snap retainer-like guide cylinder holding groove and a plurality of protrusions, and further provided at least one slit in the solenoid yoke from the guide cylinder holding groove toward the other piece of the solenoid yoke. A movable iron core to which a seating seat is fixed, a compression coil spring, and a fixing member having hermetic packings mounted on an outer peripheral portion are inserted into the inner peripheral portion of the guide cylinder of the multi-port valve main body, and the outer peripheral portion of the guide cylinder of the multi-port valve main body is inserted. The fixing member and the solenoid are also fixed by attaching the solenoid to the portion and externally fitting a piece of the solenoid yoke to a cutout portion on the outer surface of the guide cylinder of the multiport valve body. Person in charge Flange portion, characterized in that it is prevented rotation by contact with the plurality of projections of the solenoid yoke.

Alternatively, a substantially U-shaped solenoid yoke,
A solenoid and a multi-port valve main body having a locking flange having a locking claw, an import and an out port, a guide cylinder, a guide cylinder outer surface cutout portion, and a valve seat, and one piece of the solenoid yoke is substantially provided. A snap retainer-like guide tube holding groove and a plurality of protrusions, and at least one slit provided in the solenoid yoke from the guide tube holding groove toward the other piece of the solenoid yoke; A movable iron core to which a seating seat is fixed, a compression coil spring, and a fixing member having hermetic packings mounted on an outer peripheral portion thereof are inserted into an inner peripheral portion of the guide cylinder. The fixing member and the solenoid are also fixed by mounting a solenoid and externally fitting a piece of the solenoid yoke into a guide tube outer surface cutout portion of the multi-port valve main body, and a locking claw of the multi-port valve main body. Wherein the plurality of projections of the solenoid yoke is hooked.

[0010]

Embodiments of the present invention will be described with reference to the drawings. FIG. 4 is a perspective view of a single direct acting valve type two-port solenoid valve 50 according to the first embodiment of the present invention. FIG.
FIG. 3 is a plan view of the two-port solenoid valve 50. FIG. 6 is a perspective view of a single-piece solenoid yoke 45 of the present invention. The single-port type direct-acting valve type two-port solenoid valve 50 according to the first embodiment of the present invention will be described. The two-port valve body 27 has an import 24 (may be an outport), an outport 25 (may be an import), the guide cylinder 13,
An outer cutout portion 14 provided on the outer surface of the guide cylinder 13 on the side of the out port 25, and a guide tube 1 near the outer cutout portion 14;
3, a solenoid fixing flange 23 provided on the end face side, a multiport valve main body fixing fixing flange 26 provided on the outport 25 side near the outer surface cutout 14, and a valve seat 15.
And provided.

In the solenoid yoke 45, one piece 42 of the solenoid yoke 45 is easily fitted to the outer cutout portion 14 (the guide cylinder 13 is substantially snap-shaped from the opening at the end face of the guide cylinder clamping groove 41). In order to facilitate guiding to the substantially central round hole portion), a substantially snap retainer (also referred to as a daruma pin) guide tube holding groove (or may be a substantially C-ring guide tube holding groove) 41. In addition, in order to add a snap function (elastically expands and contracts so as to make a clicking sound), the other end of the yoke 45 is passed from the guide tube holding groove 41 through a substantially central portion of the yoke 45. At least one slit 44 is provided in the yoke 40 toward 43. In particular, it is not necessary to provide the slit 44 up to the other piece 43, and the slit 44 may be inserted from the one piece 42 or any position from the one piece 42 until the snap function can be secured. The one piece 42 is provided with a plurality (two in this embodiment) of projections 46.

A fixed member having a movable iron core 18 to which a seat 17 seated on the valve seat 15 is fixed, a compression coil spring 19, and hermetic packings 20 mounted on an outer peripheral portion of the inner peripheral portion of the guide cylinder 13. The fixed iron core 21 was inserted.
Here, in order to facilitate attachment and detachment of the fixed core 21, a step (stopper) may be provided on the inner peripheral portion of the guide tube 13 to such an extent that the fixed core 21 protrudes slightly from the end face of the guide tube 13. . That is, when the fixed iron core 21 is fixed by a substantially U-shaped solenoid yoke 45 described later, the guide cylinder 1
A gap is formed such that the three end faces do not contact the other piece 43 of the yoke 45.

A solenoid 30 in which a copper wire 31 is wound around a cylindrical bobbin 32 and connected to a terminal piece 33 is attached to the outer peripheral portion of the guide cylinder 13 (the solenoid 30 can be inserted up to the solenoid fixing flange 23). The fixed iron core 21 and the solenoid 30 are also fixed by externally fitting a piece 42 of the solenoid yoke 45 to the outer surface cutout 14, and the locking flange 26 of the two-port valve body 27 is Solenoid yoke 4
5 is a direct-acting valve type two-port solenoid valve 50 capable of preventing rotation by contacting the plurality of projections 46.

The 2-port solenoid valve 50 attracts the movable core 18 by applying, for example, a low DC voltage (eg, 12 V) to the terminal piece 33, and
The valve seat 15 is opened and closed by a seat 17 fixed to the armature. If necessary, a rubber damper 22 or the like is inserted between the fixed iron core 21 and the movable iron core 18 to reduce the impact noise at the time of suction. Is done. In the single-port type direct-acting valve type two-port solenoid valve 50 according to the first embodiment of the present invention, the locking flange 26 of the two-port valve body 27 abuts on the plurality of projections 46 of the solenoid yoke 45. Therefore, the rotation of the two-port valve main body 27 and the solenoid 30 can be prevented.

FIG. 7 is a perspective view of a single direct acting valve type two-port solenoid valve 60 according to a second embodiment of the present invention. FIG.
FIG. 4 is a sectional view of a port solenoid valve 60. A single-piece direct-acting valve type two-port solenoid valve 60 according to a second embodiment of the present invention will be described.
The two-port valve body 29 has an import 24, an out port 25, a guide tube 13, an outer cutout 14 provided on the outer surface of the guide tube 13 on the outport 25 side, and an outer cutout 14. A flange 23 for fixing the solenoid provided on the end face side of the guide cylinder 13 in the vicinity; a locking flange 26 for fixing the multi-port valve body provided on the side of the out port 25 near the cutout portion 14 on the outer surface; A locking claw 28 provided at an end of the locking flange 26 and the valve seat 15 are provided.

The solenoid yoke 45 is used in common with the single direct acting valve type two-port solenoid valve 50 of the first embodiment of the present invention.

A fixed member having a movable core 18 to which a seat 17 seated on the valve seat 15 is fixed, a compression coil spring 19, and hermetic packings 20 mounted on an outer peripheral portion of the inner peripheral portion of the guide cylinder 13. The fixed iron core 21 was inserted.

The outer peripheral portion of the guide cylinder 13 is provided with the first of the present invention.
The solenoid 30 which can be used in common with the single-acting direct-acting valve type two-port solenoid valve 50 of the embodiment is mounted, and one piece 42 of the solenoid yoke 45 is fitted to the outer surface cutout portion 14 to fix the solenoid. The iron core 21 and the solenoid 30 are also fixed, the locking flange 26 of the two-port valve body 29 is brought into contact with the plurality of projections 46 of the solenoid yoke 45, and the locking claw of the locking flange 26 is fixed. A direct-acting valve type two-port solenoid valve 60 in which the protrusion 28 and the plurality of protrusions 46 of the solenoid yoke 45 are engaged.

The two-port solenoid valve 60 is fixed to the movable iron core 18 by, for example, applying a DC voltage (for example, AC 100 V full-wave rectification) to the terminal piece 33 to attract the movable iron core 18. The seat 15 opens and closes the valve seat 15. If necessary, a rubber damper 22 or the like is inserted between the fixed iron core 21 and the movable iron core 18.
Impact noise during suction is reduced.

In the single-port direct-acting valve type two-port solenoid valve 60 according to the second embodiment of the present invention, the two-port valve body 29 is used.
Of the solenoid yoke 45 can be prevented from rotating, and the locking claws 28 of the locking flange 26 and the plurality of solenoid yokes 45 can be prevented. Is prevented from easily coming off from the cutout 14 on the outer surface of the guide cylinder of the two-port valve body 29.

As described above, various combinations and the like of the preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and a number of combinations are possible without departing from the spirit of the invention. Needless to say, combinations, modifications and the like can be made. For example, although the embodiment of the present invention has been described as a normally closed single-acting direct-acting valve type two-port solenoid valve, in the case of a normally-open single-acting direct-acting valve type two-port solenoid valve,
The components to be inserted into the inner peripheral portion of the guide cylinder 13 may be slightly changed.

FIG. 9 is a perspective view of a single direct acting valve type three-port solenoid valve 70 according to a third embodiment of the present invention. Further, although the embodiment of the present invention has been described by using a single direct acting valve type two-port solenoid valve, for example, when a single direct acting valve type three port solenoid valve 70 is used, it is not shown in detail. However, it is sufficient to change the two-port valve main body 27 or 29 to the three-port valve main body 71 in which the valve seat 15 and the import 24 or the out port 25 are additionally provided.

FIG. 10 is a perspective view of a multiple direct-acting valve type two-port solenoid valve 80 according to a fourth embodiment of the present invention. Further, the embodiment of the present invention has been described with reference to the single-acting direct-acting valve type two-port solenoid valve 50 or 60. Although not shown, a substantially U-shaped solenoid yoke 45
(U-shaped solenoid yoke 4)
7 (for multiple type). Multiple type (two, three
Or 3 stations or more), the direct-acting valve type 2-port solenoid valve 5
A plurality of types (models) can be configured by a combination of 0 or 60, a direct-acting valve type 3-port solenoid valve 70, and the like. Therefore, a solenoid U-shaped solenoid yoke or the like may be changed according to customer specifications.

[0024]

The direct-acting valve type multi-port solenoid valve of the present invention has an effect that all parts can be easily attached and detached as a measure against recycling while improving the assemblability and reliability.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional direct-acting valve type two-port solenoid valve.

FIG. 2 is a cross-sectional view of a conventional direct-acting valve type two-port solenoid valve.

FIG. 3 is a perspective view of a conventional solenoid yoke.

FIG. 4 is a perspective view of a single direct acting valve type two-port solenoid valve according to the first embodiment of the present invention.

FIG. 5 is a plan view of a single direct acting valve type two-port solenoid valve according to the first embodiment of the present invention.

FIG. 6 is a perspective view of a single-piece solenoid yoke of the present invention.

FIG. 7 is a perspective view of a single direct acting valve type two-port solenoid valve according to a second embodiment of the present invention.

FIG. 8 is a sectional view of a single direct acting valve type two-port solenoid valve according to a second embodiment of the present invention.

FIG. 9 is a perspective view of a single direct acting valve type three-port solenoid valve according to a third embodiment of the present invention.

FIG. 10 shows a multiple direct acting valve system 2 according to a fourth embodiment of the present invention.
It is a perspective view of a port solenoid valve.

[Explanation of symbols]

10: Conventional single-acting direct-acting valve type 2-port solenoid valve, 11
... Import, 12 ... Out port, 13 ... Guide tube, 1
4 ... external cutout, 15 ... valve seat, 16 ... 2 port valve body,
17: seating seat, 18: movable iron core, 19: compression coil spring, 20: airtight packing, 21: fixing member,
22: Rubber damper, 23: Solenoid fixing flange, 24
... Import, 25 ... Out port, 26 ... Locking flange for fixing the multi-port valve body, 27 ... Two-port valve body of the first embodiment of the present invention, 28 ... Hanging claw, 29 ... Second embodiment of the present invention Example 2 port valve body, 30 ... solenoid, 31 ... copper wire, 3
2 ... bobbin, 33 ... terminal piece, 40 ... conventional substantially U-shaped solenoid yoke, 41 ... substantially snap retainer-like guide tube holding groove, 42 ... one yoke, 43 ... yoke other piece, 44 ... slit, 45 ... A substantially U-shaped solenoid yoke for a single unit, 46 ... Projection, 47 ... A substantially U-shaped solenoid yoke for a multiple unit, 50 ... A single direct acting valve type 2-port of the first embodiment of the present invention. Solenoid valve, 60 ... Single direct acting valve type 2-port solenoid valve of the second embodiment of the present invention, 70 ... Single direct acting valve type 3 port solenoid valve of the third embodiment of the present invention, 71 ... The three-port valve body of the third embodiment of the invention, 80 ... the fourth embodiment of the invention
Multiple direct acting valve type 2-port solenoid valve of the embodiment

Claims (2)

[Claims] 1. A multi-port valve body having a substantially U-shaped solenoid yoke, a solenoid, a locking flange, an import port, an out port, a guide cylinder, a guide cylinder outer surface notch, and a valve seat. In the direct acting valve type multi-port solenoid valve, one piece of the solenoid yoke is provided with a substantially snap retainer-like guide cylinder holding groove and a plurality of projections, and further from the guide cylinder holding groove toward the other piece of the solenoid yoke. A fixing member in which at least one slit is provided in the solenoid yoke, and a movable iron core to which a seating seat is fixed, a compression coil spring, and hermetic packing are mounted on an outer peripheral portion of the inner peripheral portion of the guide cylinder of the multi-port valve body. The solenoid is mounted on the outer peripheral portion of the guide cylinder of the multi-port valve main body, and one piece of the solenoid yoke is externally fitted to a cutout portion of the outer surface of the guide cylinder of the multi-port valve main body, thereby securing the solid. A direct-acting-valve multi-port solenoid valve, wherein the fixed member and the solenoid are also fixed, and the rotation is prevented by the locking flange of the multi-port valve body coming into contact with the projection of the solenoid yoke. 2. A multi-port valve having a substantially U-shaped solenoid yoke, a solenoid, a locking flange having a locking claw, an import and an out port, a guide cylinder, a guide cylinder outer surface notch, and a valve seat. And a main body and a direct-acting valve type multi-port solenoid valve, wherein a portion of the solenoid yoke is provided with a substantially snap-retainer-like guide cylinder holding groove and a plurality of projections, and further, the solenoid yoke is moved from the guide cylinder holding groove to the solenoid yoke. Providing at least one slit in the solenoid yoke toward the other piece,
A movable iron core to which a seating seat is fixed, a compression coil spring, and a fixing member having airtight packings mounted on an outer peripheral portion thereof are inserted into an inner peripheral portion of the guide cylinder of the multi-port valve main body, and a guide cylinder of the multi-port valve main body is inserted. The solenoid is mounted on the outer peripheral portion, and one piece of the solenoid yoke is externally fitted to the cutout portion of the outer surface of the guide cylinder of the multi-port valve body, so that the fixing member and the solenoid are also fixed, and the multi-port valve is fixed. A direct-acting valve type multi-port solenoid valve, wherein a locking claw of a main body and a plurality of protrusions of the solenoid yoke are locked.