JPH09100934A - Solenoid valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To integrate manual operating mechanism and lock mechanism into a compact solenoid valve by holding a first manual operating member into a pressure-moved position through the position change to a cover member by the turn of the first manual operating member. SOLUTION: When a first manual operating member 43 is pressed to the solenoid 11 side, a movable iron core 25 of the solenoid part 11 moves to manually operate valve mechanism. When the first manual operating member 43 is turned, the relative position to a cover member 45 is changed, and the first manual operating member 43 is locked in a pressure-moved position. Manual operating mechanism and lock mechanism can be formed into simple structure by holding the first manual operating member 43 into a pressure-moved position through the position change to the cover member 45 by the turn of the first manual operating member 43. As a result, the manual operating mechanism and lock mechanism can be easily integrated into a compact solenoid valve.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve,
In particular, it relates to a solenoid valve provided with a mechanism for manually operating and locking the valve mechanism.

[0002]

2. Description of the Related Art Conventionally, for example, a solenoid valve for switching the direction of an air cylinder is known to be equipped with a manual operation mechanism for switching the valve mechanism by manual operation. In such an electromagnetic valve, for example, by pressing the manual operation member, the valve mechanism is switched only while the pressing is being performed.

On the other hand, for example, in the solenoid valve for switching the direction of the air cylinder, it may be required to continuously put the valve mechanism in a switching state for a long time at the time of maintenance of the air cylinder. In such a case, it is practically difficult to continuously press the manual operation member for a long time.

Therefore, conventionally, there has been known an electromagnetic valve provided with a lock mechanism for manually fixing the valve mechanism at a predetermined position.

[0005]

However, the conventional solenoid valve having the above-mentioned manual operation mechanism and lock mechanism has a problem that the structure becomes very complicated and it is difficult to incorporate it in a small solenoid valve. there were.

That is, recently, the solenoid valve has been rapidly miniaturized, and a small solenoid valve having an outer diameter of 10 mm and a length of 30 to 50 mm has been developed. It was very difficult to incorporate a manual operation mechanism and a lock mechanism. The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a solenoid valve having a manual operation mechanism and a lock mechanism having a very simple structure.

[0007]

According to a first aspect of the present invention, there is provided a solenoid valve in which a movable iron core is arranged, a valve portion in which a valve mechanism is arranged on an axis extension line of the movable iron core, and the valve portion of the valve portion. A first manual operation member that is disposed so as to be rotatable around the axis extension line on the side opposite to the solenoid portion so as to be rotatable about the axis extension line, and that manually operates the valve mechanism by movement by pressing on the movable iron core side. A cover member arranged outside the protruding portion of the first manual operation member, and the first manual operation member being pressed by the position change with respect to the cover member due to rotation of the first manual operation member. And a first holding mechanism for holding the moving position by the first holding mechanism.

According to a second aspect of the present invention, in the solenoid valve according to the first aspect, the first holding mechanism is formed on the cover member so as to cover an outer peripheral portion of an end face of the first manual operation member. An inner flange portion, a protrusion portion formed on the outer periphery of the first manual operation member so as to protrude toward the inner flange portion side, and the protrusion portion that is formed on the inner flange portion and is in a state other than the holding time. It is characterized by having a concave portion.

According to a third aspect of the invention, in the solenoid valve according to the first or second aspect, the solenoid valve is provided outside the cover member.
A second holding mechanism for holding the first manual operation member at the moving position by the pressing is arranged. A solenoid valve according to a fourth aspect is the solenoid valve according to the third aspect, wherein the second holding mechanism is a second manual operation member arranged to cover the cover member, and a guide formed on the cover member. A groove, a protrusion formed on the second manual operation member and fitted into the guide groove, and a rotating means formed on the second manual operation member and engaging with the first manual operation member. It is characterized by having.

According to a fifth aspect of the invention, in the solenoid valve according to the fourth aspect, the second manually operated member is detachably arranged on the cover member.

[0011]

In the solenoid valve according to the first aspect of the present invention, when the first manual operating member is pressed toward the solenoid by the driver or the like, the movable iron core of the solenoid moves and the valve mechanism is manually operated.

Further, when the first manual operating member is rotated by a driver or the like from this state, the relative position of the first manual operating member with respect to the cover member is changed, and the first manual operating member is moved to the moving position by pressing. Locked. In the solenoid valve of the second aspect, the protruding portion formed on the outer periphery of the first manually operated member is housed in the recess formed in the inner flange portion of the cover member except when the solenoid valve is locked.

On the other hand, at the time of locking, the projecting portion is disengaged from the recess by rotating the first manual operating member while pressing the first manual operating member, and the first manual operating member is locked at the moving position by pressing. In the solenoid valve of the third aspect, the second holding mechanism that holds the first manual operation member in the moving position by pressing is arranged outside the cover member.

In the solenoid valve of the fourth aspect, when the second manual operation member is fitted on the cover member, the projection of the second manual operation member is engaged with the guide groove of the cover member. Then, when the second manual operation member is rotated while being pressed from this state,
The protrusion moves along the guide groove, and at the same time, the first manual operation member is rotated by the rotating means, and the first manual operation member is locked at the moving position by pressing.

In the solenoid valve of the fifth aspect, the second manual operation member is attachable to and detachable from the cover member.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows an embodiment of a solenoid valve according to the present invention. This solenoid valve is used, for example, for direction switching of an air cylinder. This electromagnetic valve is composed of a solenoid section 11, a valve section 13 and a manual operation section 15. The solenoid portion 11 has a coil 19 wound around a bobbin 17, a yoke 21, a fixed iron core 23, and a movable iron core 25.

The movable iron core 25 is pressed toward the valve portion 13 by the coil spring 27. A guide member 29 is attached to the tip of the movable iron core 25. A valve member 31 is built in the center of the tip of the movable iron core 25, and is pressed toward the guide member 29 by a coil spring 33. The valve portion 13 has a valve body 35, and the valve seats 35a, 35 are provided in holes formed inward from the center of the upper and lower end surfaces.
b is formed to project.

The valve seat 35a communicates with the supply port 35c,
The valve seat 35b communicates with the exhaust port 35d. Also,
The supply port 35c communicates with the chamber 35f that communicates with the output port 35e via the valve seat 35a. In the chamber 35f, the valve member 37 is arranged together with the push member 39.

As shown in FIGS. 2 and 3, the push member 39 is formed with a pair of rod-shaped rod portions 39a. The pair of rod portions 39a are formed in the valve body 35 and are inserted into the pair of through openings 35g.

The tip is in contact with the end surface of the guide member 29. The valve member 37 is a coil spring 41.
Is pressed toward the valve seat 35a. Manual operation part 1
5 has a first manual operation member 43, a cover member 45, and a second manual operation member 47. Cover member 45
Is arranged on the opposite side of the valve body 35 from the solenoid 11.

The cover member 45 has a U-shaped cross section, and is fixed to a recess 35h formed in the end surface of the valve body 35 by, for example, ultrasonic welding. Cover member 4
5 in the chamber 35f formed between the valve member 37 and
The manual operation member 43 is fitted. The coil spring 4 is provided between the first manual operation member 43 and the valve member 37.
1 is arranged.

A coil spring 49 is disposed between the valve body 35 and the first manual operating member 43 and is pressed toward the cover member 45. First manual operation member 43
An annular groove 43a is formed on the outer periphery of the annular groove 43a.
An O-ring 51 is attached to a. A shaft portion 43b having a reduced diameter is formed at an end portion of the first manual operation member 43, and the shaft portion 43b is inserted into the central hole 45a of the cover member 45.

Further, the shaft portion 43 of the first manual operation member 43
A locking groove 43c for locking a driver or the like is formed on the end surface of b. 4 to 6 show details of the cover member 45. In the cover member 45, an inner flange portion 45c protruding inward is formed at one end of a cylindrical main body portion 45b.

Guide grooves 45d, which are bent at two positions from the end surface of the inner flange portion 45c, are formed on both sides of the outer periphery of the main body portion 45b of the cover member 45. The guide groove 45d is formed in a crank shape, and is formed in the axial direction groove 45d.
e, 45f and circumferential grooves 45g, 45h.
As shown in FIG. 5, a substantially triangular concave portion 45i is formed on the inner surface of the inner flange portion 45c at a position separated by 180 degrees.

A protrusion 45j is formed adjacent to the recess 45i so as to protrude from the inner surface of the inner flange 45c. 7 to 9 show the first manual operation member 43.
In the end surface of the first manual operation member 43, a locking groove 43c for locking a driver or the like is formed.

Protrusions 43d are formed on both sides of the outer periphery of the first manual operation member 43 at positions separated by 180 degrees. A concave portion 43e is formed in an end surface 43g portion deviated by 90 degrees from the protruding portion 43d, and the concave portion 43e and the end surface 43g are connected by a slope 43f. FIG. 10 is a developed view showing the fitted state of the bottom surface of the inner flange portion 45c of the cover member 45 and the outer circumference of the first manually operated member 43.
The solid line shows the state of FIG.

11 to 13 show the details of the second manual operating member 47. The second manual operating member 4 is shown in FIG.
7, a cylindrical portion 47 fitted on the outside of the cover member 45.
a is formed. A bottom portion 47b is formed on one side of the tubular portion 47a. One of the bottom portions 47b is extended in the radial direction, and a grip portion 47c having a tapered tip is formed.

A pair of protrusions 47d are formed on both sides of the inner periphery of the cylindrical portion 47a at positions separated by 180 degrees.
A protrusion 47e is formed on the inner surface of the bottom portion 47b, and a protrusion 47f is formed at the tip of the protrusion 47e.
In the solenoid valve described above, when the coil 19 of the solenoid portion 11 is not excited, the valve seat 35b on the solenoid portion 11 side is closed by the valve member 33 as shown in FIG.
A gap is formed between the valve seat 35a on the other side and the valve member 37, and the air supplied from the supply port 35c flows into the chamber 35f via the valve seat 35a and then from the outlet port 35e to an air cylinder (not shown). Supplied to the side.

On the other hand, when the coil 19 of the solenoid portion 11 is excited, the movable iron core 25 is attracted to the fixed iron core 23 side, and a gap is formed between the valve seat 35b and the valve member 33 on the solenoid portion 11 side. The valve seat 37 on the other side is closed by the valve member 37, and the air in the air cylinder (not shown)
After flowing through the outlet port 35e and into the chamber 35f, the rod portion 39a of the push member 39 and the through port 35g of the valve body 35.
Through the gap between the valve and the valve seat 35b on the solenoid portion 11 side, and is discharged from the exhaust port 35d.

If the first manual operating member 43 is pushed toward the solenoid portion 11 by the tip of a screwdriver or the like without the second manual operating member 47 being fitted on the cover member 45, the first manual operating member 47 is operated. The push member 39 is pressed toward the solenoid 11 by the member 43,
A gap is formed between the valve seat 35b on one side and the valve member 33, the valve seat 35a on the other side is closed by the valve member 37, and the coil 19 of the solenoid portion 11 is in the same state as energized. The air in the air cylinder does not reach the exhaust port 3.
It is discharged from 5d.

Therefore, the valve mechanism of the solenoid valve can be switched by manual operation while pressing the first manual operation member 43 toward the solenoid portion 11 side by the tip of the driver or the like. When it is required to continuously switch the valve mechanism for a long time during maintenance of the air cylinder or the like, the first manual operation member 4
The valve mechanism is locked by 3 or the valve mechanism is locked by the second manual operation member 47.

The valve mechanism is locked by the first manual operating member 43 such that the tip of the driver is engaged with the first manual operating member 43 with the second manual operating member 47 not fitted on the cover member 45. This is performed by rotating the first manual operation member 43 while being locked in the stop groove 43c and pressing the first manual operation member 43 toward the solenoid portion 11 side. That is, the first manual operation member 43 is moved by the tip of the driver or the like.
When is not pressed, as shown by the solid line in FIG.
A projection 43d formed on the outer periphery of the first manual operation member 43 is engaged with a recess 45i formed on the inner flange portion 45c of the cover member 45.

When the first manual operation member 43 is pressed by the tip of the driver or the like from this state, the projection 43d of the first manual operation member 43 is disengaged from the recess 45i of the cover member 45. Then, from this state, the first manual operation member 4
When 3 is rotated in the direction of arrow A in FIG. 10, the protrusion 43d of the first manual operation member 43 is moved to the protrusion 45j of the cover member 45.
To be in the state shown by the chain double-dashed line in the figure.

This state is the locked state of the valve mechanism,
This state is maintained even when the pressing of the first manual operation member 43 toward the solenoid portion 11 by the tip of the driver or the like is released. On the other hand, in order to release this state, the tip of the driver or the like is locked in the locking groove 43c of the first manual operation member 43, and the first manual operation member 43 is rotated in the direction opposite to the arrow A in FIG. The inner flange portion 45 of the cover member 45.
This is performed by engaging the protrusion 43d of the first manual operation member 43 with the recess 45i formed in c.

In order to lock the valve mechanism by the second manual operating member 47, the tubular portion 47a of the second manual operating member 47 is fitted on the cover member 45, and the second manual operating member 47 is attached to the solenoid portion 11 side. The second manual operation member 47 in the state of being pressed to
It is performed by rotating.

That is, as shown in FIGS. 14 and 15, when the cylindrical portion 47a of the second manual operating member 47 is fitted on the cover member 45, the bottom portion 4 of the second manual operating member 47 is inserted.
7b, the protruding portion 4 at the tip of the protruding portion 47e formed inside
7f is engaged with a locking groove 43c formed at the upper end of the first manual operation member 43. At the same time, the protrusion 47d formed on the inner periphery of the cylindrical portion 47a of the second manual operation member 47 is formed on the outer periphery of the cover member 45.
It is engaged with the upper end of 5d.

When the grip portion 47c of the second manual operation member 47 is pressed from this state, the protrusion 47d of the second manual operation member 47 moves along the groove 45e in the axial direction of the guide groove 45d and is guided. It is located at the entrance of the circumferential groove 45g of the groove 45d. In this state, the locking groove 43c of the first manual operation member 43 is pressed by the ridge 47f of the second manual operation member 47, and as described above, the first manual operation member 43.
The protruding portion 43d is removed from the recess 45i of the cover member 45.

From this state, when the grip portion 47c of the second manual operation member 47 is rotated while being pressed while a force is being applied in the direction of arrow B in FIG. 15, the second manual operation member is rotated. The protrusion 47d of 47 moves along the circumferential groove 45g, the axial lengthwise groove 45f, and the circumferential groove 45h of the guide groove 45d, and is located on the inner side of the circumferential groove 45h of the guide groove 45d.

In this state, the first manual operating member 43
Is rotated by the protrusion 47f of the second manual operation member 47, and as described above, the protrusion 4 of the first manual operation member 43.
3d contacts the protrusion 45j of the cover member 45. This state is the locked state of the valve mechanism, and this state is maintained even when the pressing of the second manual operation member 47 on the solenoid portion 11 side is released.

On the other hand, the release of this state is performed by rotating the second manual operating member 47 in the direction opposite to the arrow B in FIG. 15 and removing the second manual operating member 47 from the cover member 45. . In the solenoid valve configured as described above, the solenoid portion 11, the valve portion 13, the first manual operation member 43 and the cover member 45 are arranged on the same axis, and the cover is provided by the rotation of the first manual operation member 43. Since the first manual operation member 43 is held in the moving position by pressing due to the position change with respect to the member 45, the manual operation mechanism and the lock mechanism can have a very simple structure.

As a result, the manual operation mechanism and the lock mechanism can be easily incorporated in the small solenoid valve.
Moreover, in the above-described solenoid valve, the first lock mechanism is provided with the inner flange portion 45c formed on the cover member 45 and the first lock mechanism.
43d formed on the outer periphery of the manual operation member 43 of
And the concave portion 45i formed in the inner flange portion 45c and accommodating the protruding portion 43d, the first lock mechanism can have a very simple structure.

Further, in the above-mentioned solenoid valve, the second manual operating member 47 for holding the first manual operating member 43 in the moving position by pressing is arranged outside the cover member 45, so that the second manual operating member 47 is arranged. With the operation member 47, a manual operation and a lock operation can be easily performed. Further, since it becomes possible to select the operation by the first manual operation member 43 and the second manual operation member 47, the usability can be improved.

Further, in the solenoid valve described above, the second lock mechanism is provided with a second manual operation member 47 arranged to cover the cover member 45, a guide groove 45d formed in the cover member 45, and a second groove. Guide groove 4 formed on the manual operation member 47 of
Since it is composed of the protrusion 47d fitted to the 5d and the protrusion 47f formed on the second manual operation member 47 and engaged with the first manual operation member 43, the second lock mechanism is extremely The structure can be simple.

In the solenoid valve described above, the second manual operating member 47 is detachably attached to the cover member 45. Therefore, the second manual operating member 47 is normally attached to the cover member 4.
By removing the second manual operation member 47 from 5, the second manual operation member 47 does not get in the way. In addition, in the embodiment described above, the guide groove 45d of the cover member 45 is formed in the crank stripe to prevent the rotation in the returning direction, but the present invention is limited to the embodiment. For example, as shown in FIG. 16A, it may be formed in a simple L shape.

Further, for example, as shown in FIG. 16B, an axial lengthwise groove 45k opening to the upper end of the cover member 45 may be formed at the end of the circumferential groove 45h. In this case, Covers the cover member 45 while the second manual operation member 47 is still rotated to the lock position.
It is possible to remove from 7. Furthermore, in the embodiment described above, an example in which the present invention is applied to a 3-port valve has been described, but the present invention is not limited to such an embodiment, and may be applied to a 2-port valve, a 5-port valve, etc., for example. Can be applied.

[0047]

As described above, in the solenoid valve according to the first aspect, the solenoid portion, the valve portion, the first manual operating member 43 and the cover member are arranged on the same axis, and the first manual operating member Due to the change in position with respect to the cover member due to rotation, the first
Since the manual operation member is held at the moving position by pressing, the manual operation mechanism and the lock mechanism can have a very simple structure.

As a result, the manual operation mechanism and the lock mechanism can be easily incorporated in the small solenoid valve.
The solenoid valve according to claim 2, wherein the first holding mechanism includes an inner flange portion formed on the cover member, a protruding portion formed on the outer periphery of the first manual operation member, and a protruding portion formed on the inner flange portion. The first holding mechanism can have a very simple structure.

In the solenoid valve of the third aspect, since the second holding mechanism for holding the first manual operating member in the moving position by pressing is arranged outside the cover member, the second holding mechanism manually operates. The operation and the lock operation can be easily performed. Further, since it becomes possible to select the operation by the first holding mechanism and the second holding mechanism, the usability can be improved.

According to another aspect of the solenoid valve of the present invention, the second holding mechanism includes a second manual operating member arranged to cover the cover member, a guide groove formed in the cover member, and a second manual operating member. The second holding mechanism can be made very simple because it is composed of a protrusion formed on the second guide fitting groove and a turning means formed on the second manual operating member and engaged with the first manual operating member. The structure can be simple. According to the solenoid valve of claim 5,
Since the second manual operation member is detachably attached to the cover member, by removing the second manual operation member from the cover member at a normal time, the second manual operation member does not get in the way. .

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a solenoid valve of the present invention.

FIG. 2 is a cross-sectional view showing details of the push member of FIG. 1 and its vicinity.

FIG. 3 is a perspective view showing details of the push member of FIG.

FIG. 4 is a perspective view showing details of the cover member of FIG.

5 is a cross-sectional view showing details of the cover member of FIG.

FIG. 6 is a bottom view showing details of the cover member of FIG. 1.

FIG. 7 is a cross-sectional view showing details of a first manual operation member of FIG.

8 is a side view showing details of the first manual operation member of FIG. 1. FIG.

9 is a top view showing details of the first manual operation member of FIG. 1. FIG.

10 is an explanatory view showing a developed state of a locked state between a recess of the cover member and a protrusion of the first manually operated member of FIG. 1. FIG.

11 is a cross-sectional view showing details of a second manual operation member in FIG.

12 is a cross-sectional view showing details of a second manual operation member of FIG.

13 is a top view showing details of a second manual operation member in FIG. 1. FIG.

FIG. 14 is a cross-sectional view showing a state in which the second manual operation member in FIG. 1 is locked.

FIG. 15 is a top view of FIG. 14;

16 is an explanatory view showing another example of the guide groove formed in the cover member of FIG.

[Explanation of symbols]

 11 Solenoid part 13 Valve part 15 Manual operation part 25 Movable iron core 43 First manual operation member 43d Projection part 45 Cover member 45c Inner flange part 45d Guide groove 45i Recess 47 Second manual operation part 47d Projection part 47f Projection part

Claims (5)

[Claims] 1. A solenoid portion in which a movable iron core is arranged, a valve portion in which a valve mechanism is arranged on an axial extension line of the movable iron core, and the solenoid portion of the valve portion is opposite to the solenoid portion. It is arranged so as to be rotatable around the axis extension line,
A first manual operating member for manually operating the valve mechanism by a movement by pressing toward the movable iron core; a cover member arranged outside a projecting portion of the first manual operating member; A first holding mechanism for holding the first manual operating member in the moving position by the pressing by the position change with respect to the cover member due to the rotation of the operating member. 2. The solenoid valve according to claim 1, wherein the first holding mechanism includes an inner flange portion formed on the cover member to cover an outer peripheral portion of an end surface of the first manually operated member, A protrusion formed on the outer periphery of the first manual operation member so as to protrude toward the inner flange portion side, and a recessed portion formed on the inner flange portion for accommodating the protrusion portion other than during the holding time. This is a solenoid valve. 3. The solenoid valve according to claim 1 or 2, wherein a second holding mechanism for holding the first manual operation member in a moving position by the pressing is arranged outside the cover member. Solenoid valve characterized by becoming. 4. The solenoid valve according to claim 3, wherein the second holding mechanism includes a second manual operation member arranged to cover the cover member, a guide groove formed in the cover member, A projection formed on the second manual operation member and fitted into the guide groove; and a rotating means formed on the second manual operation member and engaged with the first manual operation member. This is a solenoid valve. 5. The solenoid valve according to claim 4, wherein the second manual operation member is detachably arranged on the cover member.