JPH0156309B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a solenoid valve having a terminal housing on the upper part of a valve body containing an operating valve.

<Prior art> Conventionally, this type of solenoid valve was
As described in Publication No. 5739, the terminal housing is integrally fixed to the upper part of the valve body, and the electromagnetic housing containing the electromagnetic coil is attached to the side of the valve body, and the lead wire of the electromagnetic coil is attached to the side of the valve body. The valve was constructed so that it was electrically connected to the terminal of the terminal casing through a small hole in the valve body.

<Problems to be Solved by the Invention> However, if this solenoid valve malfunctions, the terminal housing is integrally fixed to the valve body, so it is necessary to remove the power connection wire from the terminal of the terminal housing. ,
Since the valve, valve body, etc. must be repaired or replaced, it takes a long time to repair or replace, and there is also the disadvantage that wiring errors are likely to occur when connecting the power supply connection wire to the terminal again after repair. . In particular, the solenoid valve
If the solenoid valve is installed in a place where workability is poor, such as a high place or a narrow place, as is generally the case, the above-mentioned drawback becomes more serious, and this type of solenoid valve poses a serious problem in terms of maintenance technology. In addition, with this solenoid valve, the lead wire of the solenoid coil passes through the hole in the valve body and is connected to the terminal of the terminal casing, so if the solenoid coil burns out, the solenoid casing can be easily removed independently from the terminal casing. The drawback was that the electromagnetic coil could not be removed and replacing the electromagnetic coil was complicated. Furthermore, for this solenoid valve, the work of electrically connecting the lead wire of the electromagnetic coil to the terminal and the work of assembling the solenoid case and the terminal case to the valve body, that is, the work of the electrical system and the mechanical system must be performed in parallel. However, it also had the disadvantage that the manufacturing process was complicated.

Therefore, an object of the present invention is to configure the terminal casing separately from the valve body so that the valve body can be removed from the terminal casing while leaving the terminal casing connected to the power supply connection line intact. To easily repair and replace a valve body and an operating valve, and to prevent wiring errors after repair.

It is also an object of the present invention to make it possible to easily attach and detach the electromagnetic case and the terminal case to the valve body independently, and to manufacture the electromagnetic valve by completely separating the electrical system and the mechanical system. It is to make it.

Another object of the present invention is to protect circuit elements such as resistors, capacitors, neon lamps, and light emitting diodes by covering them with a cover, and to enable the energization display element to be checked from the outside through the cover.

<Means for Solving the Problems> In order to achieve the above object, the solenoid valve of the present invention has an upper part of a valve body 2 incorporating an operating valve 1 for controlling fluid, as illustrated in FIGS. 1 to 6. A connecting housing 6 to which a connecting fitting 5 having an electromagnetic housing connecting part 5a and a terminal housing connecting part 5b orthogonal to the electromagnetic housing connecting part 5a is attached is detachably attached to the terminal housing side connection. A terminal housing 9 comprising a connecting part 7 that can be inserted into and removed from the part 5b and a terminal 8 that is connected to the connecting part 7.
is removably attached to the connection housing 6 to connect the terminal housing side connection portion 5b and the connection portion 7, while the connection portion 23 is removably inserted into the electromagnetic housing side connection portion 5a. and an electromagnetic coil 3 that is supplied with power from the connecting portion 23 is detachably attached to the side of the valve body 2 to connect the electromagnetic housing side connecting portion 5a and the connecting portion 23. and the above terminal 8
An electric circuit is formed between the electromagnetic coil 3 and the electromagnetic coil 3 so that the operating valve 1 is driven by the electromagnetic coil 3. Furthermore, a cover 14 is fixed to the connection housing 6, and an optional A storage chamber 16 for storing circuit elements is formed, an energization display element is stored in the storage chamber 16, and lighting of the energization display element can be confirmed from outside the solenoid valve through the cover 14. shall be.

<Operation> Electromagnetic case side connection part 5a and this electromagnetic case side connection part 5a
A connecting housing 6 to which a connecting fitting 5 having a terminal housing side connecting portion 5b orthogonal to the terminal housing side connecting portion 5b is fixedly attached is detachably attached to the upper part of the valve body 2. Therefore, the electromagnetic case 4
The connection portion 23 of the terminal case 9 and the electromagnetic case side connection portion 5a of the connection fitting 5 are removably connected from the mounting direction of the electromagnetic case 4, and the connection portion 7 of the terminal case 9 and the connection portion 5a of the connection fitting 5 are removably connected.
It is removably connected to the terminal housing side connecting portion 5b from the mounting direction of the terminal housing 9. Therefore, the terminal case 9
The valve body 2 and the operating valve 1 can be easily repaired or replaced by removing the valve body 2 from the terminal case 9 while the power connection line is connected to the terminal case, and the power connection line does not need to be removed from the terminal case 9 during repair. This eliminates wiring errors in the power supply connection line, and also allows the electromagnetic housing 4 and terminal housing 9 to be easily attached and detached from the valve body 2 independently, allowing manufacturing with the mechanical system and electrical system completely separated. , you can easily manufacture solenoid valves.

In addition, circuit elements such as resistors, capacitors, neon lamps, and light emitting diodes are stored in storage compartments.
protected by a cover. Further, the energization display element can be confirmed from the outside through the cover.

<Example> Hereinafter, the present invention will be explained in detail with reference to illustrated examples.

The electromagnetic valves shown in FIGS. 1, 2, and 3 include a valve body 2 that incorporates an operating valve 1 that controls the flow direction of fluid, and a valve body 2 that is detachably attached to both sides of the valve body 2. A pair of left and right electromagnetic casings 4, 4 containing electromagnetic coils 3, 3 for controlling the operation of the valve body 2, and a pair of connecting means attached to the upper part of the valve body 2 and electrically connected to the electromagnetic coils 3, 3, respectively. a connection housing 6 which is provided with connection fittings 5, 5 on the left and right sides, respectively, and a pair of connections which are detachably attached to the upper part of the connection case 6 and are respectively connected to the pair of connection fittings 5, 5 of the connection case 6. Part 7,
It consists of a terminal housing 9 in which a pair of terminals 8, 8 having terminals 7 are built in on the left and right sides, respectively.

The valve body 2 is formed into a generally rectangular parallelepiped shape, and a pair of screws 11 are provided on the upper part of the valve body 2, and a connecting housing 6 made of an insulating material such as a roughly dish-shaped plastic having an opening at the top is disposed on the diagonal of the connecting housing 6. , 11. In FIG. 1, the connection housing 6 has a pair of socket insertion openings 12, 12 extending horizontally through the left and right side walls 6a, 6a, respectively, and a roughly camp-shaped transparent or semi-transparent socket at the center of the bottom wall 6c. A cover 14 made of an insulating material such as transparent plastic is fixed from below with screws 15, and the cover 14 and the bottom wall 6c form a storage chamber 16, and the left and right side walls 1 of the cover 14 in FIG.
A pair of pipes 1 having socket insertion ports 17, 17 penetrating vertically in 4a, 14a, respectively.
8 and 18 are integrally formed.

On the other hand, the connection case 6 made of the connection fitting 5 is made by bending a thin conductive plate at a right angle as shown in FIGS. On the other hand, a vertically substantially cylindrical socket 5 is provided at the other end as a connection portion on the terminal housing side.
It forms b. Each of the above-mentioned connection fittings 5 includes a first,
As shown in Figures 2 and 3, the horizontal plate portion 5c is fitted into a groove (not shown) in the bottom wall 6c of the connection casing 6 and fixed, and the horizontal socket 5a is inserted into the socket insertion opening 12 of the side wall 6a. At the same time, the vertical socket 5b is inserted into the socket insertion opening 17 of the cover 14.

In the above embodiment, the horizontal plate portions 5c of each of the connection fittings 5 are fitted into grooves (not shown) of the connection housing and fixed, but each of the connection fittings 5...
The horizontal plate portion 5c may be fixed. In such a case, the cover 14 provided with the connection fittings 5 becomes detachable from the connection case 6.

On the other hand, each electromagnetic housing 4 is connected to the first part of the valve body 2 by a bolt 21 that passes through it in the horizontal direction and is fixed to the valve body 2, and a nut 22 that is screwed into the bolt 21.
They are fixed on both the left and right sides in the figure. Above electromagnetic case 4
A protrusion 4a is provided on the upper part of the valve body 2 side, and the connection part of the electromagnetic coil 3 consisting of a pair of plugs 23, 23 is made to protrude in the horizontal direction from the protrusion 4a. It is inserted into the horizontal sockets 5a, 5a of the pair of connection fittings 5, 5 of the connection casing 6, and is electrically connected. Therefore, plug 23
The bolt 2 and the socket 5a are both arranged and fitted in the same horizontal direction as the mounting direction of the electromagnetic case 4, so the bolt 2
The electromagnetic housing 4 can be freely attached to and removed from the valve body 2 by attaching and detaching the nut 22 to the valve body 1 and moving the electromagnetic housing 4 in the horizontal direction. At this time, the side surface of the protrusion 4a on the valve body 2 side and the left and right side walls 6 of the connection housing 6
The outer surfaces of a and 6a are in close contact with each other, and the socket insertion opening 1
2 with the O-ring 24 provided around the plug 2.
3. The area around the socket 5a is sealed.

On the other hand, as shown in FIG. 1, on the upper part of the connection housing 6, a terminal housing 9 made of an insulating material such as plastic, which penetrates vertically and has an insertion opening 25 for a power supply connection line on the left side, is mounted with a packing 26. It is located through. As shown in FIGS. 2, 3, and 6, the terminal housing 9 has protrusions 27, 27 protruding inwardly from approximately the center of the front and rear side walls 9a, 9a, respectively. 27 are arranged on the pair of pipes 18 on the front and rear side walls 14a, 14a of the cover 14 fixed to the connection case 6, and the pipes 1
The protrusion 2 facing the socket insertion opening 17 of 8
Plug press-fit holes 28 penetrating vertically are provided at locations 7, respectively. Each of the plug press-fit holes 28 has a terminal 8 formed of a substantially rod-shaped plug 7.
The plug 7 is integrally fixed to the terminal housing 9 by press-fitting the connecting portion thereof, and the tip 7a of the plug 7 is press-fitted.
is made to protrude from the lower surface of the protrusion 27, and the tip 7a is tightly fitted into the vertical socket 5b of the connection fitting 5. Furthermore, a female screw 7b is provided at the axis of each of the plugs 7 from above, and a terminal made of a terminal screw 8 is screwed into the female screw 7b. Therefore, as shown in FIG. 2, the terminal screws 8, 8 on one side are separated by a pair of partition plates 33, 33 provided inward from the center of the front and rear walls 9a, 9a of the terminal housing 9. 7,
7. It is connected to the electromagnetic coil 3 on one side via the connecting fittings 5, 5 and plugs 23, 23, and when voltage is applied between the terminals 8, 8, the electromagnetic coil is energized and the valve 1 is operated. . Further, a lid plate 3 is attached to the upper part of the terminal housing 9 via a packing 35.
6 are attached to the valve body 2, and these are fixed to the valve body 2 by a pair of long screws 37, 37 arranged diagonally and passing through the cover plate 36, packing 35, and terminal housing 9. Therefore, when the long screws 37, 37 are attached and removed and the terminal housing 9 is moved in the vertical direction, the plug 7 and the socket 5b are both arranged in the same vertical direction as the terminal housing 9 and are fitted together. Therefore, the terminal housing 9 can be freely attached to and detached from the valve body 2. The lid plate 36 and the gasket 35 are provided with a pair of through holes 36a, 35a for protruding the cover 14, which are arranged substantially diagonally.

On the other hand, in the storage chamber 16 formed by the bottom wall 6c of the connection case 6 and the cover 14, a printed board 41 is fixed to the bottom of the cover 14. A coil spring 43 made of a conductive material is fixed to the bottom of the printed board 41 and at a location opposite to the horizontal plate portion 5c of each of the connection fittings 5,
The lower end 43a of each coil spring 43 is brought into contact with the horizontal plate portion 5c. On the other hand, on the upper part of the printed board 41, there is provided a third connector which connects to a pair of connecting fittings 5, 5 on one side of the electromagnetic housing 4 shown in FIG.
In the pair of coil springs 43, 43 shown in the figure,
An energization display element consisting of a neon lamp 46 and a circuit element consisting of a resistor 47 are connected in series via the conductive portion of the printed board 41 and a conductive wire 45. Further, on the upper part of the cover 14, a pair of protrusions 14d that protrude upward in two stages are provided, arranged approximately diagonally as shown in FIG. The neon lamp 46 is fitted into the neon lamp 1, and its upper stage 14d-1 is tightly fitted into the pair of through holes 36a and 35a provided in the lid plate 36 and the gasket 35, respectively. The lighting of the lamp 46 can be reliably confirmed from the outside through the transparent or semi-transparent cover 14. Therefore, the pair of coil springs 4 on one side of the electromagnetic coil 3
One neon lamp 46 connected to 3, 43
is connected in parallel with the electromagnetic coil 3 via a pair of connecting fittings 5, 5, so when the electromagnetic coil 3 is energized, the neon lamp 46 on the corresponding side is always lit and the state is Display. Note that circuit elements such as a capacitor, a surge absorption element such as a Zener diode, a rectifier circuit, etc. can be stored in the storage chamber 16 and on the printed board 41 as required.

Next, the handling of assembly, which is the most characteristic feature of the above-mentioned solenoid valve, will be explained. To assemble the electromagnetic valve, the connection housing 6, the terminal housing 9, and the electromagnetic housing 4 are assembled independently in advance, and then they are attached to the valve body 2 in the direction of the arrow shown in FIG. 6 for assembly. That is, in advance, the cover 14 to which the printed board 41 to which the neon lamp 46, the resistor 47, and the coil spring 43 are attached is fixed is fixed to the connection case 6 with screws 15, and the horizontal direction of the connection case 6 is fixed in advance. Insert the socket 5a of the connection fitting 5 into each socket insertion opening 12, and insert the socket 5a of the connection fitting 5 into each vertical socket insertion opening 17 of the cover 14.
Insert b. Further, the plug 7 is press-fitted into the vertical plug press-fitting hole 28 of the protruding portion 27 of the terminal housing 9 and fixed, and the tip 7a of the plug 7 is made to protrude vertically downward. Then, the terminal screw 8 is screwed into the female thread 7b of the plug 7. After assembling the connection case 6 and the terminal case 9 in this way, the connection case 6 is fixed to the valve body 2 with a pair of screws 11, and then the packing 26 is placed on the connection case 6 and the terminal case 9 is assembled. The tips 7a of each plug 7 of the terminal housing 9 are inserted into the vertical sockets 5b of the connection housing 6, and the gasket 35 and cover plate 36 are inserted into the holes 35a, 36 on the top of the terminal housing 9. 36a so that the protruding part 14d of the cover 14 fits into the valve body 2, and the terminal housing 9 is detachably attached to the valve body 2 using a pair of long screws 37 that pass through the cover plate 36, the terminal housing 9, and the connecting housing 6. Fix it. On the other hand, on the left and right sides of the valve body 2, after moving each electromagnetic housing 4 horizontally along the bolt 21 and fitting the pair of plugs 23 into the pair of horizontal sockets 5a of the connecting housing 6, nuts 22 are attached. is screwed into the bolt 21 to removably fix the electromagnetic housing 4 to the valve body 2.

The solenoid valve assembled in this manner is electrically connected by fitting the plug 23 and socket 5a, which are provided in the mounting direction, ie, horizontal direction, of the electromagnetic housing 4, which is detachable by means of bolts 21 and nuts 22. Electrical connection is made by fitting the plug 7 and socket 5b, which are installed in the mounting direction of the removable terminal housing 9, i.e. in the vertical direction, using a pair of long screws 37. Since it is not necessary to connect the lead wire to the terminal through a thin hole, assembly is easy and the number of assembly steps is reduced, making the solenoid valve itself inexpensive. In addition, this solenoid valve is constructed by assembling the valve body 2, the mechanical system of the valve 1, and the electrical systems of the connection case 6, terminal case 9, and electromagnetic case 4 completely separately, and then assembling them into the surroundings of the mechanical system as described above. It is easy to manufacture because the electrical system can be easily assembled integrally. Further, in this electromagnetic valve, a cover 14 is fixed to the connection case 6, a storage chamber 16 is formed by the cover 14 and the bottom wall 6c of the connection case 6, and a neon lamp 4 is placed in the storage chamber 16.
6. Since the resistor 47 is housed, it can be protected by the cover 14, and furthermore, the lighting of the neon lamp 46 can be confirmed at all times through the cover 14, which is convenient. Furthermore, this solenoid valve
The rod-shaped plug 7 is fixed to the terminal housing 9 in the mounting direction of the terminal housing 9, that is, in the vertical direction, and the upper end of the plug 7 is provided with a female thread 7b into which the terminal screw 8 is screwed, while the lower end is fixed in the vertical direction of the connecting fitting 5. Since it is adapted to be removably fitted into the socket 5b in the direction, the number of parts is small and it is compact. Furthermore, since the terminal housing 9, the connection housing 6, and the cover 14 are made of insulating material, this solenoid valve is easy to insulate, does not require special space for insulation, and is compact. be.

Furthermore, when this solenoid valve is incorporated into other hydraulic equipment, there are the following advantages. In general, in hydraulic systems, solenoid valves are often installed in locations that are difficult to work with, such as in high places or in narrow spaces. In such a case, in order to install the solenoid valve at a predetermined location, remove the terminal housing 9 from the valve body 2 in advance, attach the valve body 2 to the designated location, and then connect the wires to the terminal housing 9 at a location with good workability. After doing
At the same time, the terminal housing 9 is attached to the valve body 2 with a pair of long screws 37, and the plug 7 is fitted into the socket 5b for easy electrical connection. This simplifies the work of assembling the solenoid valve into the hydraulic system, and also simplifies the wiring. Eliminates mistakes in work.

Furthermore, in the event that the electromagnetic valve malfunctions due to the valve 1 sticking to the valve body 2, etc., there are the following advantages. That is, with the power supply connection line connected to the terminal case 9, remove the pair of long screws 37 and remove the terminal case 9.
When the valve body 2 is moved vertically upward, the socket 5b of the connection case 6 and the plug 7 of the terminal case are connected to the terminal case 9.
Since they are fitted on the same axis in the removal direction, that is, in the vertical direction, the plug 7 of the terminal case 9 and the socket 5b of the connection case 6 can be easily disengaged at the same time as the terminal case 9 is removed from the valve body 2. Valve body 2
The terminal housing 9 can be removed from the terminal case 9. Therefore, unlike conventional solenoid valves, the terminal housing 9 can be attached and detached independently from the valve body 2 while the power connection line is connected to the terminal housing 9, so even if the solenoid valve malfunctions, The valve body 2 can be replaced easily and quickly, resulting in a shorter downtime of the hydraulic system, which has advantages in terms of maintenance. Also, when the electromagnetic coil 3 of the electromagnetic case 4 is disconnected, remove the nut 22 from the bolt 21,
When the electromagnetic case 4 is moved horizontally along the bolt 21, the socket 5a of the connection case 6 and the plug 23 of the electromagnetic case 4 are fitted together in the mounting direction of the electromagnetic case 4, that is, on the same axis in the horizontal direction. At the same time as the electromagnetic housing 4 is removed from the valve body 2, the fitting between them is removed. Therefore, in this electromagnetic valve, even if the electromagnetic coil 3 is disconnected, it can be replaced easily and quickly independently.

<Effects of the Invention> As detailed in the above embodiments, the solenoid valve according to the present invention has a connecting case provided with a connecting means removably attached to the upper part of the valve body housing the operating valve, and A terminal housing having a built-in terminal and a connecting portion thereof is detachably attached to the connecting housing, and at the same time, the connecting portion of the terminal is detachably connected to the connecting means of the connecting housing from the mounting direction of the terminal housing. Because the terminal case can be easily and quickly removed from the valve body, the valve and valve body can be repaired and replaced in a short time.Furthermore, the valve and valve body can be repaired and replaced while the power connection wire is connected to the terminal. It does not cause mistakes and has advantages in terms of maintenance.

Further, in the electromagnetic valve according to the present invention, an electromagnetic casing having a built-in electromagnetic coil and a connecting portion thereof at an upper portion of one side can be detachably attached to a side portion of the valve body, and at the same time, the connecting portion of the electromagnetic coil can be attached to the upper portion of one side. Since the connection means of the connection case is connected removably from the mounting direction of the electromagnetic case, if the electromagnetic coil burns out, the electromagnetic case can be easily removed independently of the terminal case, and the electromagnetic coil can be easily removed. It is easy to replace and has additional maintenance benefits.

Furthermore, the solenoid valve according to the present invention is easy to manufacture and inexpensive because the electrical system can be easily assembled integrally around the mechanical system after the mechanical system and the electrical system are assembled completely separately. It is.

Furthermore, in the solenoid valve according to the present invention, the cover is fixed to the connection case, and a storage chamber for storing arbitrary circuit elements is formed in the connection case, so that resistors, capacitors,
Circuit elements such as neon lamps and light emitting diodes can be covered and protected. Further, the energization display element is stored in the storage chamber, and the lighting of the energization display element can be confirmed from the outside through the cover, which is convenient. Furthermore, the energized display element can be surrounded and positioned by the cover, and the cover can also be used as a holder for the energized display element.

Furthermore, when poor contact of the connection fittings or malfunction of the energization display element occurs, it is necessary to replace it with a new one. Because there is
All you have to do is replace this connection case with a new one, and when replacing the connection case, remove the terminal case from the connection case without removing the power cord from the terminal case.
After that, just replace the connection case with a new one. Therefore, the work time required for repair and replacement can be shortened, and mistakes in wiring the power cord can also be prevented.

In addition, in the present invention, since the valve body is provided with a detachable connection housing, the material of the connection housing can be freely selected regardless of the valve body, and by selecting lightweight materials, insulating materials, etc., the solenoid valve can be made lighter and the connection Easily insulate metal fittings.

[Brief explanation of drawings]

1 to 6 show a solenoid valve according to a first embodiment of the present invention, and FIG. 1 is a front view with main parts cut away;
Fig. 2 is a plan view showing the lid plate and packing removed, Fig. 3 is a sectional view taken along the - line in Fig. 1, Figs. 4 and 5 are a plan view and side view of the connecting fittings, and Fig. 6 is FIG. 1... Operating valve, 2... Valve body, 3... Electromagnetic coil, 4... Electromagnetic housing, 6... Connection housing, 6c... Bottom wall, 7... Plug, 8... Terminal, 9... Terminal box,
14...Cover, 16...Storage room.

Claims (1)

[Claims] 1 Valve body 2 with built-in operating valve 1 that controls fluid
A connecting housing 6 having a connecting fitting 5 having an electromagnetic housing connecting part 5a and a terminal housing connecting part 5b orthogonal to the electromagnetic housing connecting part 5a is detachably attached to the upper part of the terminal housing. A terminal housing 9, which has a connecting part 7 that can be inserted into and removed from the side connecting part 5b, and a terminal 8 that is connected to the connecting part 7, is detachably attached to the connecting housing 6, and the terminal housing is removed. While connecting the side connection part 5b and the connection part 7, the electromagnetic case side connection part 5
An electromagnetic casing 4 including a connecting part 23 that can be inserted into and removed from the valve body 2 and an electromagnetic coil 3 that is supplied with power from the connecting part 23 is removably attached to the side of the valve body 2, and the electromagnetic casing side The connecting portion 5a and the connecting portion 23 are connected, an electric circuit is formed between the terminal 8 and the electromagnetic coil 3, and the electromagnetic coil 3 operates the operating valve 1.
Further, a cover 14 is fixed to the connection case 6, and a storage chamber 16 for storing an arbitrary circuit element is formed in the connection case 6.
A solenoid valve characterized in that an energization display element is housed inside the solenoid valve, and the lighting of the energization display element can be confirmed from the outside of the solenoid valve through a cover 14.