JP2573245Y2 - Solenoid valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electromagnetic valve provided with a valve mechanism and an electromagnetic device for opening and closing a bubble mechanism in a housing.

[Prior art] As a conventional electromagnetic valve of this type, a mounting hole is provided on a side portion of a housing, a manual operation body is inserted and assembled into the mounting hole, and a valve mechanism is operated by the manual operation body as necessary. 2. Description of the Related Art There is known a device that can be opened and closed manually.

[Problems to be Solved by the Invention] However, in this conventional electromagnetic valve, in order to hold the manual operation body in the mounting hole of the housing to prevent the manual operation body from coming off,
Since the retaining member is attached to the housing by press-fitting, pinning, screwing, or the like, the structure is complicated, the number of parts is increased, and the assembling is very troublesome.

The present invention has been made by focusing on the problems existing in such conventional technology, and the purpose is to reduce the number of parts by simplifying the structure for retaining the manually operated body. It is another object of the present invention to provide an electromagnetic valve which can be assembled very easily.

[Means for Solving the Problems] In order to achieve the above object, in the invention according to claim 1, a first shaft portion through which an operating body can be inserted into an opening of the mounting hole, The first shaft portion is formed at the tip end side of the first shaft portion with a stepped portion as a boundary, and has a smaller diameter than the first shaft portion. The outer periphery of the first shaft portion has its own elastic force. A reverse skirt-shaped elastic engaging body is provided which can be displaced to the outer peripheral surface side of the first shaft portion against the first shaft portion, a cutout portion is formed in the elastic engaging body, and a tip portion of the second shaft portion is A taper-shaped engaging portion engageable with the valve mechanism is provided, and a housing portion for movably housing the elastic engaging body is formed in the mounting hole, and a spring seat is provided on the back side of the housing portion. When the operating body is inserted into the mounting hole and assembled, the elastic engaging body is engaged with the opening of the mounting hole so that the elastic engaging body It is shifted to the outer peripheral surface side to allow insertion into the mounting hole, and when the insertion of the elastic engagement body accommodated in the accommodation section is completed, the elastic engagement body returns to the original position by its own elastic force in the accommodation section. The operating body is prevented from coming off by engaging with the surface on the opening side of the housing, and an elastic engaging body is provided between the step of the operating body and the spring seat of the mounting hole. A spring for biasing is provided on the side surface.

[Operation] According to the electromagnetic valve of the first aspect, when the operating body is inserted into the mounting hole of the housing, the first engaging member engages with the opening of the mounting hole to resist the elastic force of the first operating member. It shifts to the outer peripheral surface side of the shaft portion, and insertion of the operating body is allowed. At this time,
The notch part which divides the elastic engagement body into a plurality makes the insertion easy. When the elastic body is housed in the housing and insertion of the operating body is completed, and the operating body is assembled at a predetermined position in the housing, the elastic engaging body is returned to its original position in the housing by its own elastic force. And the operating body is retained and retained by engaging with the opening-side surface of the storage section. In particular, since the elastic engagement body is formed in an inverted skirt shape, the tip end is separated from the outer peripheral surface of the operation body.

Further, according to the electromagnetic valve of the second aspect, since the elastic engagement body and the operating body are integrally formed, the number of parts can be reduced as compared with a case where both parts are separated.

[Embodiment] An embodiment of an electromagnetic valve embodying the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 1, the housing 1 includes a valve seat 2 in a part thereof, and an inlet 3 and an outlet 4 are provided so as to communicate with the center and the outside of the valve seat 2. The magnetic pole body 5 constituting the electromagnetic device is joined and fixed to one side of the housing 1 via a seal ring 6, and an electromagnetic coil 7 is provided therein. A plunger 8 as a valve is movably disposed in the magnetic pole body 5, and the plunger 8 and the valve seat 2 constitute a valve mechanism. And
When the plunger 8 is normally urged by the spring 9 to the position where it is joined to the valve seat 2, the flow path between the inlet 3 and the outlet 4 is closed, and when the electromagnetic coil 7 is energized, the plunger 8 Is moved to a position separated from the valve seat 2 against the action of the above, and the flow passage is opened.

The mounting hole 10 is formed from the side of the housing 1 toward the center so as to extend in a direction perpendicular to the direction of movement of the plunger 8, and has an inner end communicating with the periphery of the distal end of the plunger 8. The mounting hole 10 has an inlet 10
a, a large diameter portion 10b larger in diameter than the inlet portion 10a, a small diameter portion 10c smaller in diameter than the inlet portion 10a, and a spring seat portion 10d are provided.

A manual operating body 11 as a cylindrical operating body made of a synthetic resin is movably inserted into the mounting hole 10, and has a tapered engagement with an inner end thereof which can be engaged with the tip of the plunger 8. A joining portion 11a is provided. The seal ring 12 is attached to the outer periphery of the manual operation body 11, and this seal 12 is
The airtightness is maintained by joining to the small diameter portion 10c. Spring 13
Is interposed between the spring seat portion 10d of the mounting hole 10 and the manual operating body 11, and the manual operating body 11 is urged outward by the urging force of the spring 13, so that the tapered engaging portion is always provided. 11a is arranged at a position separated from the tip of the plunger 8.

As shown in FIGS. 1 and 2, the manual operation body 11 includes:
An elastic engaging body 14 as an inverted skirt-shaped engaging body is provided on the outer periphery thereof.
Are formed integrally, and the distal end thereof is separated from the outer peripheral surface of the manual operation body 11. And the elastic engagement body
14 is divided into a plurality of slits 15 as a plurality of notches provided at predetermined intervals in the circumferential direction, thereby facilitating the elastic deformation of itself. Therefore, when inserting the manual operation body 11 into the mounting hole 10 of the housing 1,
This elastic engagement body 14 is shifted to the inoperative position in the reduced diameter state against the elastic force of itself by engagement with the inlet portion 10a of the mounting hole 10, and insertion of the manual operation body 11 is allowed, When the insertion of the manual operation body 11 is completed and the manual operation body 11 is assembled at a predetermined position in the mounting hole 10, the elastic engaging body 14 has its own elastic force in the large diameter portion 10b of the mounting hole 10. As a result, the position is shifted to the operation position in the expanded state, and engages with the inner edge of the opening of the inlet portion 10a of the mounting hole 10, so that the manual operation body 11 is retained and retained in the mounting hole 10.

Next, the operation of the electromagnetic valve configured as described above will be described.

FIG. 1 shows the plunger 8 by the urging force of the spring 9.
Are arranged at positions where they are joined to the valve seat 2, and the flow path between the inlet 3 and the outlet 4 is closed. When the electromagnetic coil 7 is energized in this state, the plunger 8 is moved to a position separated from the valve seat 2 against the action of the spring 9 and the flow path between the inlet 3 and the outlet 4 is opened. . When the manual operation body 11 is pressed against the urging force of the spring 13 in a state where the flow path is closed, the tapered engagement portion 11a is engaged with the tip of the plunger 8, and The plunger 8 is moved to a position separated from the valve seat 2, and the flow path can be opened in the same manner as when the electromagnetic coil 7 is energized.

Now, in the electromagnetic valve of this embodiment, the elastic engaging body 14 for retaining is integrally formed on the outer periphery of the manual operation body 11 as described above. Therefore, when assembling the manual operation body 11, if the manual operation body 11 is inserted into the mounting hole 10 of the housing 1, the elastic engagement body 14 is reduced in its own elastic force by engagement with the inlet 10 a of the mounting hole 10. In contrast, the position is shifted to the inoperative position in the reduced diameter state, and the insertion of the manual operation body 11 is allowed. And
When the insertion of the manual operation body 11 is completed and the manual operation body 11 is assembled at a predetermined position in the mounting hole 10, the elastic engaging body 14 is moved by its own elastic force in the large diameter portion 10b of the mounting hole 10. It is shifted to the operation position in the expanded state, and the entrance 10a of the mounting hole 10 is formed.
And the manual operation body 11 is retained in the mounting hole 10 so as not to come off.

Therefore, there is no need to separately prepare a retaining member for retaining the manual operation body 11 and mount it around the mounting hole 10 of the housing 1. The structure for retaining the manual operation body 11 is simple and the number of parts is reduced. And at the same time, it can be assembled very easily.

In addition, this invention is not limited to the configuration of the embodiment, for example, by changing the shape of the elastic engagement body 14,
The configuration of each unit can be arbitrarily changed and embodied without departing from the spirit of the present invention.

[Effects of the Invention] As described in detail above, according to the invention of the first and second aspects, the retaining structure of the operating body is simple, the number of parts can be reduced, and the elastic engaging body has a notch. Since it is formed, it is easy to shift to the inoperative position against the elastic force. In addition, since the elastic engagement body is formed in an inverted skirt shape, its tip is separated from the outer peripheral surface of the operation body. Therefore, it is possible to form an elastic engagement body having a sufficient diameter so that the operation body does not come off from the mounting hole, and it is possible to easily assemble the operation body.

In particular, according to the invention of claim 2, since the number of parts can be further reduced, the cost can be further reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of an electromagnetic valve embodying the present invention, and FIG. 2 is a perspective view showing a part of a manually operated body. DESCRIPTION OF SYMBOLS 1 ... Housing, 2 ... Valve seat which comprises a valve mechanism, 5 ...
Magnetic pole body constituting the electromagnetic device, 7: electromagnetic coil, 8: plunger constituting the valve mechanism, 10: mounting hole, 11: manual operating body, 14: elastic engaging body.

Claims (2)

(57) [Scope of request for utility model registration] A valve mechanism and an electromagnetic device for opening and closing the valve mechanism are provided in a housing, a mounting hole is formed in a side portion of the housing, and an operating body is inserted and assembled into the housing from the mounting hole. An electromagnetic valve that opens and closes the valve mechanism by pressing the operating body, wherein a first shaft portion through which the operating body can be inserted into an opening of the mounting hole, and a first shaft portion thereof. And a second shaft portion having a smaller diameter than the first shaft portion formed at the front end side with a step portion as a boundary, and the outer periphery of the first shaft portion is opposed to its own elastic force. First
A reversible skirt-shaped elastic engaging body which can be displaced to the outer peripheral surface side of the shaft portion of the shaft, a cutout portion is formed in the elastic engaging body,
A tip portion of the shaft portion is provided with a tapered engagement portion engageable with the valve mechanism, and the mounting hole is formed with a housing portion for movably housing the elastic engagement body, and A spring seat portion is provided on the back side of the housing portion, and when the operating body is inserted and assembled into the mounting hole, the engaging body is engaged with the opening of the mounting hole so that the engaging body is formed on the outer periphery of the first shaft portion. When the insertion is completed when the elastic engagement body is accommodated in the accommodation section, the elastic engagement body returns to its original position in the accommodation section by its own elastic force and is accommodated. The operating body is prevented from coming off by engaging with the surface on the opening side of the portion, and an elastic engaging body is provided between the step portion of the operating body and the spring seat of the mounting hole on the opening side of the housing portion. An electromagnetic valve, wherein a spring for biasing the surface is provided. 2. The electromagnetic valve according to claim 1, wherein said elastic engaging body is formed integrally with said operating body.