JPH1144374A - Manually operating device for solenoid valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To change the cover size according to the number of solenoid valves without increasing kinds of parts by allowing operation by wholly exposing a plurality of operation members covered with covers only at a necessary time. SOLUTION: A set of solenoid valve groups 1 are constituted by accumulating plural solenoid valves 1A to 1F. The respective solenoid valves 1A to 1F have a directional control valve part 4 to switch fluid passages to/from each other, an actuator part 5 controlled to actuate its directional control valve part 4 and manually operating devices 6 operated to actuate the directional control valve part 4 independently of control of the actuator part 5. The respective manually operating devices 6 have operation members 7 operated to actuate the directional control valve part 4 and covers 8 arranged so as to be switched to a closing position to cover the operation members 7 and an opening position to expose the operation members 7. The respective covers 8 have a connecting means (an engaging projection and an engaging hole) to connect the other covers 8 to each other. When a plurality of solenoid valves 1A to 1F are accumulated, the adjacent covers 8 are connected to each other by the connecting means so as to be relocated by interlocking the whole covers 8 with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solenoid valve provided with a switching valve for switching a fluid flow path and an actuator electrically controlled to operate the switching valve. More particularly, the present invention relates to a manual device of an electromagnetic valve provided on the electromagnetic valve and operated to forcibly operate a switching valve unit independently of control of an actuator unit.

[0002]

2. Description of the Related Art Conventionally, there is an electromagnetic valve used for switching a gas flow path. This type of solenoid valve has a switching valve section containing a spool valve and an actuator section that is electrically controlled to drive the spool valve.

[0003] Such solenoid valves are used in certain types of mechanical equipment including pneumatic circuits. Here, the actuator of the solenoid valve is automatically controlled based on a predetermined sequence program or the like. On the other hand, at the time of assembling adjustment of the mechanical equipment or maintenance thereof, it is necessary to arbitrarily drive the electromagnetic valve independently of the control of the actuator unit. Therefore, such a solenoid valve is provided with a manual device which is operated to arbitrarily and forcibly drive the spool valve.

[0004] This type of manual device includes operation members such as a manual button and a manual knob provided on the switching valve portion. This operating member is exposed to the outside of the switching valve portion in appearance. For this reason, if the user or the like accidentally touches the operation member,
There is a risk that the manual device will operate and the solenoid valve will inadvertently malfunction.

In order to avoid erroneous operation of the operation member, it is conceivable to provide a cover on the manual device and cover the operation member with the cover. If the cover is opened when necessary, the operation of the operation member can be performed. If the cover is closed when not required, erroneous operation of the operation member can be prevented. This effectively prevents the malfunction.

When a plurality of solenoid valves are provided in the above-mentioned mechanical equipment, a set of solenoid valves is formed by arranging these solenoid valves in parallel (sequentially). When a cover is provided on each of the solenoid valves constituting this solenoid valve group, it is necessary to open each cover individually in order to operate the operating member of each solenoid valve. However, in the adjustment of the mechanical equipment, there are many cases where the operating members of a plurality of solenoid valves must be operated at once for one set of solenoid valves. In this case, the cover must be opened and closed individually for each operation member, and the operation is complicated.

Therefore, as shown in FIG. 14, a plurality of solenoid valves 31A, 31B, 31
It is conceivable to provide an integrated cover 33 that can open and close the operation members 32 of C, 31D, 31E, and 31F at a time.

[0008]

However, with the integral cover 33, a potential problem is that the solenoid valve group 31
In the case where the number of the solenoid valves 31A to 31F constituting the above is different, it is necessary to prepare a cover having a length corresponding to the number. This means that the solenoid valve 3
In consideration of arbitrarily adding or removing the number of 1A to 31F, in addition to the plurality of solenoid valves 31A to 31F, it is necessary to prepare in advance several types of covers having different lengths. It causes evil.

On the other hand, if the cover 33 covering the operation member 32 is easily opened until the operation of the operation member 32 is not required, the plurality of operation members 32 are exposed to the outside at one time. As a result, they may be erroneously operated.

The present invention has been made in view of the above circumstances, and a first object of the present invention is to provide a plurality of operating members covered by a cover for a manual device for a plurality of solenoid valves arranged adjacent to each other. Can be exposed at the same time only when necessary to allow operation, and without increasing the number of parts, the size of the cover, especially the length of the cover ( (1) To provide a manual device for a solenoid valve which allows the size in the direction to be easily changed.

A second object of the present invention, in addition to the first object, is to provide a solenoid valve manual device which does not inadvertently expose an operation member.

[0012]

According to a first aspect of the present invention, in order to achieve the first object, a switching valve for switching a fluid flow path and operating the switching valve are provided. A manually-operated device provided on an electromagnetic valve having an actuator portion that is electrically controlled to cause the switching valve portion to operate independently of the control of the actuator portion. An operating member that is externally operated to operate the valve unit, a cover that is selectively switched to a closed position that covers the operating member, and an open position that exposes the operating member; and a plurality of electromagnetic valves. Are disposed adjacent to each other, the operating member and the cover are provided for each of the solenoid valves, and the cover has a connecting means for connecting with another cover, and the connecting means Is more than one Solenoid valve is when positioned adjacent to each other, and the spirit that a possible linking the cover adjacent to all covers are switched arranged in conjunction with each other.

According to the structure of the first aspect of the present invention, the switching section is operated and the fluid flow path is switched by electrically controlling the actuator section. On the other hand, when the operating member of the manual device is operated from the outside, the switching valve unit is forcibly operated independently of the control of the actuator unit,
The fluid flow path can be arbitrarily switched.

Here, in each of the solenoid valves, the cover is switched between a closed position for covering the operation member and an open position for exposing the operation member. Then, by arranging the plurality of solenoid valves adjacent to each other, the adjacent covers are connected to each other by the connecting means. This allows
All the covers are integrally connected such that all the covers are interlocked and switched between the closed position and the open position.

Therefore, by disposing the integral cover in the closed position, the operating members of all the manual devices are simultaneously covered by the covers. All the operating members are simultaneously exposed by disposing the integral cover in the open position.

Further, another solenoid valve is added to the plurality of adjacent solenoid valves, or some solenoid valves are removed from the plurality of solenoid valves. In this case, the size of the integral cover can be changed by connecting or removing the cover of the solenoid valve to be added or removed from the integral cover.

In order to achieve the second object, a second aspect is provided.
A second aspect of the present invention is characterized in that, in the configuration of the first aspect, when the cover is arranged at the closed position, a fixing means for fixing the cover at the same position is further provided.

According to the configuration of the second aspect, in addition to the operation of the first aspect, since the cover is fixed by the fixing means, the rearrangement of the cover from the closed position to the open position is restricted.

In order to achieve the first object, a third aspect is provided.
According to a third aspect of the present invention, in the configuration of the first aspect, the cover has one of a spindle and a bearing assembled to each other, the switching valve portion has the other of the spindle and the bearing, and the cover is attached to the bearing. By being pivoted about the assembled support shaft, the switch position is switched between the closed position and the open position, the bearing has a bearing hole including the support shaft, and an opening for opening the bearing hole in the radial direction. And the support shaft is irregularly shaped, and only when the cover is arranged at a predetermined intermediate position between the closed position and the open position and the shape of the support shaft matches the opening, the bearing and the support shaft The separation is permitted.

According to the configuration of the third aspect of the invention, in addition to the operation of the first aspect, the cover is rotated about the support shaft mounted on the bearing and is switched between the closed position and the open position. . Then, only when the cover is arranged at a predetermined intermediate position and the shape of the support shaft matches the opening, separation of the support shaft and the bearing is allowed. Conversely, by disposing the cover at a predetermined intermediate position and matching the opening with the shape of the support shaft, the support shaft can be included in the bearing hole and the bearing can be assembled to the support shaft.

According to a fourth aspect of the present invention, in order to achieve the second object,
According to a fourth aspect of the present invention, in the configuration of the third aspect, when the cover is disposed at the closed position, a fixing means for fixing the cover at the same position, and the fixing means connects the cover to the switching valve portion. A screw for tightening, the screw being screwed into a hole provided in the cover to be held.

According to the configuration of the fourth aspect, in addition to the operation of the third aspect, since the cover is fixed by the fixing means, the rearrangement of the cover from the closed position to the open position is restricted. In addition, since the screws constituting the fixing means are screwed and held in the holes of the cover, the screws do not fall off the cover when the cover is not fixed at the closed position.

In order to achieve the second object, the present invention provides a method according to claim 5.
According to a fifth aspect of the present invention, in the configuration of the third or fourth aspect, when the cover is arranged at the closed position, a latching means for latching the cover at the same position is provided. And

According to the configuration of the fifth aspect, in addition to the function of the third or fourth aspect, the cover is locked by the locking means at the closed position. By applying a force to the cover as needed to release the latch by the locking means, the rearrangement of the cover from the closed position to the open position is permitted.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] A first embodiment of a manual device for an electromagnetic valve according to the present invention will now be described in detail with reference to FIGS.

As shown in FIGS. 1 and 2, this embodiment shows an integrated solenoid valve group 1 provided in predetermined mechanical equipment. The solenoid valve group 1 includes a plurality of solenoid valves 1A, 1B, 1C, 1D, 1E,
1F and a supply / exhaust block 20 are provided, and are integrated by being held between a pair of end blocks 2 and 3. In this embodiment, both end blocks 2, 3
A part of the solenoid valves 1A to 1F may be removed between
By adding another solenoid valve to A to 1F, the number of solenoid valves constituting the solenoid valve group 1 can be appropriately changed.

Each of the solenoid valves 1A to 1F has a box shape having a small width. Each of the solenoid valves 1A to 1F includes a switching valve section 4 and an actuator section 5 provided on one side thereof. Each switching valve unit 4 has a built-in valve body (spool valve) for switching the flow path of the fluid (gas). Each actuator section 5 has a solenoid valve or the like that is electrically controlled to drive the spool valve. Each switching valve unit 4 is, as shown in FIGS.
On the upper side, a manual device 6 is provided. Each manual device 6 is operated to forcibly and arbitrarily drive the spool valve of each switching valve unit 4 independently of the control of the actuator unit 5.

Each of the manual devices 6 includes an operating member 7 disposed above the switching valve portion 4 in FIGS. Each operation member 7 is pressed or rotated from outside to drive the spool valve. Each cover 8 has its base end rotatably mounted on a bearing 9 provided on the switching valve portion 4. Each cover 8 is selectively switched and arranged between a closed position covering the operation member 7 around its base end and an open position exposing the operation member 7 to the outside. Thus, the operating member 7 and the cover 8 are provided for each of the solenoid valves 1A to 1F.

Each switching valve section 4 has a pair of pipe joints 10 on the side opposite to the actuator section 5. These fittings 1
To 0, a pipe (not shown) for flowing a gas is connected. The gas switched by each of the solenoid valves 1A to 1F is supplied to a predetermined fluid device from each pipe joint 10 through a pipe.

The individual solenoid valves 1A to 1F are connected to each other via a predetermined connecting means (not shown). Solenoid valve group 1
The solenoid valves 1A, 1F located at both ends of the corresponding end blocks 2, 3 are also connected via connecting means (not shown).
Linked to

As shown in FIG. 3 to FIG.
Has a main body 8a having a U-shaped cross section and a support shaft 8b provided at the base end of the main body 8a. The main body 8a has, on one of its side walls 8c, an engaging projection 8d projecting sideways.
The main body 8a has an engaging hole 8f on the other side wall 8e, which is aligned with the engaging protrusion 8d. The engaging projections 8d and the engaging holes 8f constitute a connecting means of the present invention for connecting each cover 8 to another cover 8.

As shown in FIG. 6, when the solenoid valves 1A to 1F are stacked in parallel with each other, one of the engaging projections 8d of the adjacent covers 8, 8 is inserted into the engaging hole 8f of the other cover 8. By engaging, the adjacent covers 8, 8 are connected to each other. As a result, an integrated cover 11 in which the plurality of covers 8 are connected to each other and interlock with each other is configured. In this way, the integral cover 11 configured in one electromagnetic valve group 1 has the open position exposing all the operating members 7 at one time as shown in FIG. The switching member is arranged to be switched between a closed position that covers the operating member 7 at a time.

As shown in FIGS. 3 and 4, the main body 8a of each cover 8 has a semicircular concave portion 8g at its tip. As shown in FIGS. 1 and 2, the concave portion 8 g is aligned with the semicircular concave portion 4 a formed in the corresponding switching valve portion 4. The two recesses 8g, 4a are aligned with each other to form one circular screw hole 12. As shown in FIG. 2, a screw 13 is inserted into at least one of these screw holes 12. The screw holes 12 and the screws 13 constitute the fixing means of the present invention. The screw 13 inserted in the screw hole 12 is tightened to a part of the switching valve portion 4, so that the integral cover 11 is fixed to the switching valve portion 4 at the closed position.

As described above, according to the configuration of the manual device 6 of this embodiment, the spool valve is driven and switched by electrically controlling the actuator 5 of each of the solenoid valves 1A to 1F. The gas flow path in the valve section 4 is switched. On the other hand, when the operation member 7 of each manual device 6 is externally operated, the spool valve
And the gas flow path in the switching valve section 4 is arbitrarily switched. The switched gas flows to the pipe via the pipe joint 10.

Here, in each of the solenoid valves 1A to 1F, each cover 8 is independently switched between a closed position for covering the operation member 7 and an open position for exposing the operation member 7. Then, as shown in FIGS. 1 and 2, a plurality of solenoid valves 1 </ b> A to 1 </ b> F are integrated to form an adjacent cover 8.
Are connected to each other by an engagement projection 8d and an engagement hole 8f. Then, all the covers 8 are connected to each other to form an integrated cover 11 that is interlocked and switched between the closed position and the open position.

Accordingly, when the integral cover 11 is disposed at the closed position, the operating members 7 of all the solenoid valves 1A to 1F are simultaneously covered by the covers 8. As a result, the operation from outside can be simultaneously prevented for all the operation members 7, and the erroneous operation of all the operation members 7 can be prevented at once. On the other hand, when the integrated cover 11 is arranged at the open position, all the operation members 7 are simultaneously exposed. As a result, all the operation members 7 covered by the covers 8 can be exposed at the same time only when necessary, thereby permitting the operation. For this reason, when the operating members 7 of all the solenoid valves 1A to 1F must be operated at once at the time of adjusting the mechanical equipment, it is necessary to individually open and close the cover 8 corresponding to each operating member 7. Absent.
In this sense, it is possible to save time and effort in adjusting the mechanical equipment.

In the solenoid valve group 1 of this embodiment, when another solenoid valve is added to the plurality of solenoid valves 1A to 1F, the cover 8 of the added solenoid valve is engaged with the integral cover 11. They are connected in a relationship between the mating projection 8d and the engaging hole 8f. Alternatively, when removing some of the solenoid valves from the plurality of solenoid valves 1A to 1F, the cover 8 of the removed solenoid valve is separated from the integrated cover 11. Thereby, the size (length) of the integral cover 11 can be changed. Therefore, it is not necessary to prepare several kinds of covers having different lengths in advance according to the difference in the number of solenoid valves. In this sense, the size (length) of the integrated cover 11 can be easily changed in accordance with the addition or removal of the solenoid valve without increasing the types of components constituting the solenoid valve group 1.

According to this embodiment, since the integral cover 11 is fixed to the switching valve portion 4 by the screw 13, the rearrangement of the integral cover 11 from the closed position to the open position is restricted. . For this reason, the integrated cover 11
However, the operation members 7 are easily opened until the operation members 7 do not need to be operated, so that the plurality of operation members 7 are not exposed at one time, and erroneous operations thereof can be reliably prevented. Furthermore, the backlash of the integrated cover 11 can be suppressed, and the vibration noise can be suppressed.

In this embodiment, each of the solenoid valves 1A to 1F
Are individually provided with covers 8. For this reason,
Even when each of the solenoid valves 1A to 1F is used alone, the cover 8 can be effectively functioned. That is, for each of the single solenoid valves 1A to 1F, the pair of operation members 7 can be exposed to the outside by opening the cover 8, and the operation member 7 can be covered by closing the cover 8.

[Second Embodiment] FIG. 7 shows a second embodiment of a manual device for a solenoid valve according to the present invention.
This will be described in detail with reference to FIGS. Note that, in this embodiment, components that are functionally the same as those in the first embodiment are given the same reference numerals, and descriptions thereof are omitted. Therefore, the following description focuses on differences from the first embodiment.

This embodiment differs from the manual unit 6 of the first embodiment in the configuration of the manual unit 21. That is,
As shown in FIG. 7, the solenoid valve group 1 of this embodiment includes a plurality of solenoid valves 1A, 1B, 1C, 1D, 1E, 1F, 1
G, 1H and a supply / exhaust block 20 are provided, and are integrated by being held between a pair of end blocks 2 and 3. Each manual device 21 includes a pair of operating members provided above each switching valve unit 4, and a pair of bases 22 and covers 23 provided corresponding to the operating members. The base 22 is fixed to the upper surface of each switching valve unit 4.
7, the operation member is hidden behind the base 22 and cannot be seen. Each cover 23 has its base end pivotally attached to each base 22. That is, as shown in FIGS. 8 and 9, each cover 23 is provided with a bearing 23a provided at its base end.
Is rotatably mounted on a support shaft 22 a provided on each base 22. Each cover 23 has a closed position covering the operation member 7 as shown in FIG.
As shown in FIG. 5, the operation member 7 is selectively switched between an open position where the operation member 7 is exposed to the outside. As described above, the operating member 7, the base 22, and the cover 23 are provided for each of the solenoid valves 1A to 1H.

As shown in FIG. 10, each base 22 has a plurality of holes 22c, 22d, 22 on its upper operation surface 22b.
e. Screws (not shown) for fixing the base 22 to the switching valve unit 4 are incorporated into the three screw holes 22c. As shown in FIGS. 8 and 9, the heads of the operation members 7 provided in the respective switching valve portions 4 are aligned with the pair of operation holes 22d. A fixing tapping screw 25 for fixing the cover 23, which will be described later, is fastened to one screw hole 22e. In FIG. 10, an engagement groove 22 f is provided on a front side surface of the base 22. In FIG. 10, the base 22
The pair of support shafts 22a (only one of them is shown in FIG. 10) protruding from both sides of the convex portion 22g provided on the rear side are arranged on the same axis. . FIG.
As shown in FIGS. 10 to 10, the support shaft 22a has an irregular shape, that is, an oval cross-sectional shape.

As shown in FIGS.
Reference numeral 3 has a flat main body 23b, a pair of bearings 23a described above provided at a base end of the main body 23b, and an engagement claw 23c provided at a distal end of the main body 23b. Body 23
b is an engagement projection 23d protruding laterally on one side surface thereof.
Having. Further, the main body 23b has an engaging hole (not shown) on the other side surface which is aligned with the engaging protrusion 23d.
The engaging projections 23d and the engaging holes are
Is connected to another cover 23 in the present invention.

Similarly to the manual device 6 of the first embodiment, when the solenoid valves 1A to 1H are integrated in parallel with each other, one of the engaging projections 23d of the adjacent covers 23, 23 is connected to the other cover 23. The adjacent covers 23, 23 are connected to each other by engaging with the engaging holes. Thereby, as shown in FIG. 7, the plurality of covers 23 are connected to each other to form an integrated cover 24 that is interlocked. In this way, as shown in FIG. 7, the integral cover 24 formed in one solenoid valve group 1 exposes the operation surfaces 22b of all the bases 22 and connects all the operation members 7 to the operation holes 22d.
And the operating position 22b of all the bases 22 and all the operating members 7 (operating holes 22
d) is switched and switched between a closed position covering at one time.

As shown in FIGS. 10 and 12, each bearing 23a
Is a bearing hole 23e containing the support shaft 22a and the bearing hole 2
And an opening 23f for opening the opening 3e in the radial direction. The inner diameter R1 of the bearing hole 23e is substantially equal to the long diameter R2 of the support shaft 22a having an oval shape. The width W1 of the opening 23f is the support shaft 23a.
Is substantially equal to the minor axis R3 of And the bearing 23a is the support shaft 2
When the cover 23 is rotated around the support shaft 22a in the state where the cover 23 is assembled, the cover 23 is switched between the closed position shown in FIG. 8 and the open position shown in FIG. On the other hand, as shown in FIG. 11, the cover 2 is disposed at a predetermined intermediate position between the closed position and the open position, that is, the position where the cover 23 is perpendicular to the base 22, and the short diameter of the support shaft 22a is Only when R3 is aligned with the opening 23f, the separation between the bearing 23a and the support shaft 22a is allowed. That is, at this time, by raising the cover 23 vertically, the bearing 23 a is separated from the support shaft 22 a and the cover 23 is separated from the base 22.

The manual device 21 is provided with fixing means for fixing the cover 23 to the cover 23 when the cover 23 is located at the closed position. As shown in FIG. 13, this fixing means includes a counterbore 23g and a counterbore 23h provided on the main body 23b of each cover 23. This counterbore 23
h, when the cover 23 is placed in its closed position,
This matches with the screw hole 22e of the base 22. The fixing means includes a tapping screw 25 for fastening the cover 23 to the base 22. The outer diameter of the thread 25a of the tapping screw 25 is slightly larger than the inner diameter of the counterbore 23h. The screw neck 25b of the tapping screw 25 is slightly longer than that of a normal screw. Free relative movement between the tapping screw 25 and the counterbore 23h is allowed within the length of the screw neck 25b. Conversely, screw head 25c or screw thread 2
The relative movement of the tapping screw 25 and the counterbore 23h is regulated by the engagement of the counterbore 5a with the counterbore 23h. Therefore, once the tapping screw 25 is screwed into the counterbore 23h, the tapping screw 25 is locked and held at the portion of the counterbore 23h.

As shown in FIG. 7, at least one of the plurality of counterbore holes 23h in the integral cover 24 (two counterbore holes 23h in the integral cover 24 shown in FIG. 7) has:
The tapping screw 25 is screwed. Here, once the integral cover 24 is placed in its closed position, each cover 2
The engaging groove 22f of the base 22 corresponding to the third engaging claw 23c
And the cover 23 is hung on the base 22. For this reason, the integrated cover 24 once disposed at the closed position is not opened carelessly. In this embodiment, the engaging claw 23c and the engaging groove 22f constitute a locking means of the present invention. Here, the integral cover 24 is fixed to the switching valve portion 4 in the closed position by tightening the tapping screw 25 screwed into the counterbore hole 23h into the screw hole 22 of the base 22.

Therefore, also in this embodiment, when the integral cover 24 is arranged at the closed position, all the solenoid valves 1A
The operation surface 22b of each base 22 in 1H is simultaneously covered with the corresponding cover 23. As a result, the operation from outside can be simultaneously prevented for all the operation members 7, and the erroneous operation of all the operation members 7 can be prevented at once. On the other hand, when the integral cover 24 is placed at the open position, the operation surfaces 22b of all the bases 22 are simultaneously exposed to the outside. Thus, all the operating members 7 covered by the covers 23 can be simultaneously exposed and operated only when necessary. Therefore, when adjusting the mechanical equipment, all the solenoid valves 1A to 1H
When it is necessary to operate the operating member 7 at a time,
It is not necessary to individually open and close the cover 23 corresponding to each operation member 7, and it is possible to save time and labor for adjusting the mechanical equipment.

Also in this embodiment, the covers 23, 23 adjacent to each other are formed by the engagement projections 23d and the engagement holes of each cover 23.
Are connected or separated from each other. Therefore, the size (length) of the integral cover 23 can be freely changed. Therefore, it is not necessary to prepare several kinds of covers having different lengths in advance according to the difference in the number of solenoid valves. In this sense, in order to configure the solenoid valve group 1 according to various situations, the size of the integral cover 24 can be increased as the solenoid valves 1A to 1H are added or removed without increasing the types of parts. (Length) can be easily changed.

In this embodiment, the cover 23 is
It is rotated by the engagement between the bearing 2a and the bearing 23a, and is switched between the closed position and the open position. And the cover 23
Are arranged at an intermediate position perpendicular to the base 22,
Only when the support shaft 22a is aligned with the opening 23f of the bearing hole 23e, the separation between the support shaft 22a and the bearing 23a is allowed. Conversely, when the cover 23 is arranged at the intermediate position and the opening 23f is aligned with the shape of the support shaft 22a, the support shaft 22
a in the bearing hole 23e so that the bearing 23a is
Can be assembled. As a result, the cover 23 can be easily attached to and detached from the base 22 only when each cover 23 is arranged at a specific intermediate position. On the other hand, when the cover 23 is assembled to the base 22, the cover 23 cannot be separated from the base 22 unless the cover 23 is arranged at a specific intermediate position. Therefore, it is possible to prevent the cover 23 from being carelessly removed from the base 22. That is, during normal use, the cover 2 is
3 can function effectively. At the same time, the cover 23 can be easily attached to and detached from the switching valve portion 4 as needed.

In this embodiment, since the cover 23 is fixed to the base 22 by the tapping screw 25, the movement of the cover 23 from the closed position is restricted. For this reason, the integral cover 24 is not opened carelessly and the plurality of operating members 7 are not inadvertently exposed at once, and erroneous operations thereof can be reliably prevented. Furthermore, the backlash of the integral cover 24 can be suppressed, and the generation of vibration noise can be suppressed. In addition, once the tapping screw 25 is screwed into the counterbore hole 23h of each cover 23, the screw 2
5 are held in the counterbore 23h. For this reason, even when the tapping screw 25 is not used, the tapping screw 25 does not fall off the cover 23, and the tapping screw 25 is not used.
Can be prevented from being lost.

In this embodiment, when the cover 23 is located at the closed position, the engagement claw 23c and the engagement groove 22
The cover 23 is hung on the base 22 by the engagement relationship with f. For this reason, even when the cover 23 is not fixed to the base 22 by the tapping screw 25, the cover 23 arranged at the closed position is not opened carelessly. This means that, for example, when the solenoid valve group 1 shown in FIG. 7 is mounted with its bottom side along a vertical wall surface, the integral cover 24 inadvertently opens from the closed position due to its own weight. Can be prevented. Cover 23 if necessary
Is applied to release the latch by the engaging claw 23c and the engaging groove 22f, the rearrangement of the cover 23 from the closed position to the open position is allowed.

Also in this embodiment, for each of the solenoid valves 1A to 1H used alone, the operation member 7 is exposed to the outside by opening the cover 23, and the operation member 7 is covered by closing the cover 23. be able to.

It should be noted that the present invention is not limited to the above-described embodiments, but can be carried out as follows without departing from the spirit of the invention.

(1) In the first embodiment, the switching position is rotated about the base end portion with respect to the switching valve portion 4 so as to close the operating member 7 and open the operating member 7. An integrated cover 11 is provided which can be switched between positions. On the other hand, an integral cover may be provided that is switched to a closed position for covering the operation member and an open position for exposing the operation member by sliding the switching member with respect to the switching valve portion.

(2) In the first embodiment, the recess 8g for forming the screw hole 12 is provided at the tip of the main body 8a of the cover 8. On the other hand, a screw hole having a counterbore on the inner periphery may be provided directly on the main body 8a of the cover 8.

(3) In the first embodiment, the screw holes 12 are used to fix the integral cover 11 to the switching valve portion 4.
And the screw 13 are provided, but these may be omitted.

(4) In the first embodiment, the electromagnetic valves 1A to 1F in which the actuator section 5 is disposed on only one side of the switching valve section 4 are embodied. On the other hand, the present invention may be embodied as an electromagnetic valve in which a pair of actuator units are arranged on both sides of the switching valve unit.

(5) In the first embodiment, the partner to be aligned with the engaging projection 8d is the engaging hole 8f, but may be a concave instead of a hole.

(6) In the second embodiment, the bearing 23a is provided on the cover 23 and the support shaft 22a is provided on the base 22, but the support shaft may be provided on the cover 23 and the bearing may be provided on the base 22. Good.

(7) In the second embodiment, the base 22 which is separate from the switching valve portion 4 and is fixed to the member 4
Although the support shaft 22a is provided in the first embodiment, the base 22 may be omitted, and the support shaft may be provided integrally with the switching valve portion.

(8) In the second embodiment, the support shaft 2
Although 2a has an elliptical cross-sectional shape, the support shaft may have an elliptical cross-sectional shape.

(9) In the second embodiment, the bearing hole 23e and the opening 23f are formed to be open to the outside of the cover 23. However, both the holes 23e and 23f are closed to the outside of the cover 23. It may be shaped. That is, in this case, the bearing hole 23e and the opening 23f are not visible from the outside of the cover 23, and the bearing hole 23e is formed inside the cover 23.
And a groove having the same outer shape and function as the opening 23f is formed.

[0064]

According to the first aspect of the present invention, the operating member and the cover are provided for each of the plurality of solenoid valves, and when the solenoid valves are arranged adjacent to each other, Adjacent covers are connected to each other by connecting means so that the covers are opened and closed in conjunction with each other to form an integral cover.

Therefore, when the integral covers are opened and closed, the operating members of all the solenoid valves are simultaneously covered by the respective covers or are simultaneously exposed. Also, with the addition or removal of the solenoid valve, the individual covers are connected or separated from the integral cover, and the size of the integral cover is changed. For this reason, a plurality of operating members covered by the cover can be simultaneously exposed only when necessary to allow operation, and at the same time, without increasing the number of types of parts, the cover can be removed in accordance with addition or removal of the solenoid valve. The effect is that the size can be easily changed.

According to the second aspect of the present invention, in the first aspect, a fixing means for fixing the cover to the closed position is provided. Therefore, in addition to the functions and effects of the first invention, the rearrangement of the cover from the closed position to the open position is restricted. For this reason, it is possible to prevent the cover from being easily opened and inadvertently exposing the operation member even when the operation of the operation member is not required, and it is possible to reliably prevent erroneous operation of the operation member. .

According to the third aspect of the present invention, in the configuration of the first aspect, a support shaft is provided on one of the cover and the switching valve portion, and a bearing is provided on the other, and the support shaft is provided on the bearing. A bearing hole to be included and an opening for radially opening the bearing hole are provided. Further, the support shaft is modified so that the support shaft and the bearing can be separated only when the cover is arranged at a predetermined intermediate position and the shape of the support shaft matches the opening. Therefore, in addition to the operation and effect of the first invention, the separation between the support shaft and the bearing is allowed only when the shape of the support shaft matches the opening, and the support shaft and the bearing can be assembled. For this reason,
At the time of normal use, the cover can be made to function effectively for the switching valve portion, and the cover can be easily attached to and detached from the switching valve portion as required.

According to the fourth aspect of the present invention, in the configuration of the third aspect, a tapping screw for fastening the cover to the switching valve portion is provided, and the tapping screw is screwed into a counterbore of the cover. Like that. Therefore, in addition to the functions and effects of the third invention, the rearrangement of the cover from the closed position to the open position is restricted. For this reason,
It is possible to prevent the cover from being easily opened and inadvertently exposing the operation member even when the operation of the operation member is unnecessary, and it is possible to reliably prevent erroneous operation of the operation member. in addition,
The self-tapping screw is engaged with the counterbore, so that the self-tapping screw is prevented from dropping from the cover, and the self-tapping screw can be prevented from being lost.

According to the fifth aspect of the present invention, in the configuration of the third or fourth aspect, when the cover is disposed at the closed position, the cover is hung at the same position. Is provided. Therefore, the third or fourth
In addition to the functions and effects of the invention, the cover is latched at the closed position, and by releasing the latch, the cover can be rearranged from the closed position to the open position. For this reason, depending on the arrangement of the solenoid valve, there is an effect that the cover arranged at the closed position can be prevented from being opened carelessly from the closed position due to its own weight.

[Brief description of the drawings]

FIG. 1 is a perspective view of a group of solenoid valves showing a state in which an integrated cover is opened according to a first embodiment of a manual device for a solenoid valve of the present invention.

FIG. 2 is a perspective view of the solenoid valve group according to the embodiment, showing a state in which an integral cover is closed.

FIG. 3 is a perspective view showing one cover according to the embodiment.

FIG. 4 is a plan view showing one cover according to the embodiment.

FIG. 5 is a side view showing one cover according to the embodiment.

FIG. 6 is an exploded perspective view showing a group of solenoid valves according to the embodiment.

FIG. 7 is a perspective view of a group of solenoid valves showing a state in which an integrated cover is opened according to a second embodiment of the manual device for a solenoid valve of the present invention.

FIG. 8 is a side view of the manual device according to the embodiment, showing a state where a cover is arranged at a closed position.

FIG. 9 is a side view of the manual device according to the embodiment, showing a state in which a cover is arranged at an open position.

FIG. 10 is an exploded perspective view showing a cover and a base according to the embodiment.

FIG. 11 is a side view of the manual device according to the embodiment, showing a state where the cover is arranged at an intermediate position.

FIG. 12 is a partially broken side view showing an assembled state of the bearing and the support shaft in an enlarged manner according to the embodiment.

FIG. 13 is a side cross-sectional view of the manual device showing the relationship between the cover and the tapping screw arranged at the closed position according to the embodiment.

FIG. 14 is a perspective view showing the appearance of a conventional solenoid valve.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 solenoid valve group 1A to 1F solenoid valve 4 switching valve unit 5 actuator unit 6 manual device 7 operating member 8 cover 8d engagement protrusion 8f engagement hole (8d, 8f constitute connecting means) 11 integral cover 12 Screw hole 13 Screw (12, 13 constitutes fixing means) 22 Base 22a Support shaft 22f Engagement groove 23 Cover 23a Bearing 23c Engagement claw (22f, 23c constitutes locking means) 23e Bearing hole 23f Opening 23h Counterbore 25 Tapping screw (25 constitutes fixing means)

Claims (5)

[Claims] 1. An electromagnetic valve provided with a switching valve for switching a flow path of a fluid, and an actuator electrically controlled to operate the switching valve, for controlling the actuator. A manual device operated to forcibly operate the switching valve unit independently of the operation member, wherein an operating member externally operated to operate the switching valve unit; and a closing position covering the operating member. And a cover that is selectively switched to an open position that exposes the operating member; and the electromagnetic valve is one in which a plurality of electromagnetic valves are arranged adjacent to each other. The operating member and the cover are provided, respectively, and the cover has connecting means for connecting with another cover, and the connecting means is such that the plurality of solenoid valves are arranged adjacent to each other. Come to, manual override solenoid valve, characterized in that a thereby connecting the adjacent cover such that the all covers are switched arranged in conjunction with each other. 2. The manual operation device for an electromagnetic valve according to claim 1, further comprising fixing means for fixing the cover at the same position when the cover is arranged at the closed position. A manual device for the solenoid valve. 3. The electromagnetic valve manual device according to claim 1, wherein the cover has one of a support shaft and a bearing assembled to each other, and the switching valve portion has the other of the support shaft and the bearing. The cover is rotated around the support shaft assembled to the bearing, so that the cover is switched between the closed position and the open position, and the bearing includes a bearing hole including the support shaft. And an opening for opening the bearing hole in the radial direction. The support shaft has an irregular shape, and the cover is disposed at a predetermined intermediate position between the closed position and the open position, and A separation device for separating the bearing from the support shaft only when a shape of the shaft matches the opening. 4. The manual device for an electromagnetic valve according to claim 3, wherein when the cover is disposed at the closed position, fixing means for fixing the cover at the same position; A screw for fastening the cover to the switching valve portion, wherein the screw is screwed into a hole provided in the cover and held. apparatus. 5. The manual device for an electromagnetic valve according to claim 3, wherein when the cover is disposed at the closed position, a locking means for locking the cover at the same position is provided. A manual device for a solenoid valve, wherein the manual device is provided.