JPH0118287B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a pneumatic integrated switch formed by unitizing a plurality of pneumatic switches.

[Conventional technology]

In order to control multiple controlled devices at the same time with a single signal, a pneumatic control system has traditionally been configured using a large number of pneumatic switches, and a pneumatic timer has also been added to the control system described above. There are also known devices that can perform sequence control of controlled devices. This type of system is useful in the field of automation technology and is used in many ways.

By the way, there are typically two types of pneumatic switches that make up the above-mentioned pneumatic control system: a forward-acting type that increases the pneumatic pressure signal and closes the circuit, and a reverse-acting type that receives the pneumatic pressure signal and opens the circuit. Switches with different configurations are required. Conventionally, a single pneumatic switch with two types of switch structures was used.
By preparing a large number of individual units and incorporating them into a pneumatic circuit as appropriate, the required control function was obtained.

[Problem to be solved by the invention]

However, in the conventional pneumatic control system described above, a large number of single pneumatic switches are individually incorporated into the circuit, which not only makes it troublesome to incorporate each switch into the circuit, but also makes it difficult to incorporate each switch into the circuit. The connecting piping for connecting the switches is also complicated and requires skill, and the installation space increases depending on the number of switches, which is disadvantageous in terms of cost.

Furthermore, the control system described above requires pneumatic switches with different structures, one for normal operation and one for reverse operation, which makes processing and assembly of each switch complicated. Not only does this become troublesome and lead to high costs, but special care is required in the installation work to properly incorporate these into the circuit, and inventory management becomes complicated as it is necessary to store switches for each type. It was a hassle.

[Means to solve the problem]

In order to solve these problems, the pneumatic integrated switch according to the present invention has a plurality of stepped through holes arranged in parallel, each consisting of a large diameter part and a small diameter part, each of which has two flexible membranes facing each other. A plurality of switches having the same configuration are arranged in parallel by an intermediate plate and first and second plates that are laminated and joined on both sides and have ventilation holes facing each stepped through hole portion. By unitizing the switch and using at least one switch as an inverter of the pneumatic signal, a large number of pneumatic switches with two types of switch functions, forward and reverse operation, can be obtained. be.

[Effect]

According to the present invention, in a plurality of unitized pneumatic switches having the same configuration, at least one switch is used as a pneumatic signal inverter, a necessary number of switches are connected to this, and the remaining switches are used to invert the pneumatic pressure signal. By directly connecting signals, it is possible to easily and compactly configure a large number of switches with two types of switch mechanisms, one for forward and one for reverse operation, and it is also easy to configure, easy to manufacture, and inexpensive to configure. It becomes possible to do so.

〔Example〕

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

FIGS. 1a and 1b show an embodiment of a switch configuration used in a pneumatic integrated switch according to the present invention,
In these figures, reference numeral 1 denotes an intermediate plate in which a stepped through hole 4 consisting of a large diameter portion 2 and a small diameter portion 3 is bored, and has a hole 5 facing the large diameter portion 2 on its upper side. In addition, an upper plate 7 having ventilation holes 6 formed in its bottom wall 5a is laminated and joined,
Further, on the lower side, a lower plate 11 having a hole 8 facing the small diameter portion 3 and having two ventilation holes 9 and 10 bored in its bottom wall 8a is laminated and joined. . In addition, 12 in the figure is a bleed hole drilled so as to penetrate the lower plate 11 from the step portion 1a of the intermediate plate 1. Also,
In this embodiment, sub-plates 7 each have holes 5 and 8 as upper and lower plates 7 and 11, respectively.
This shows the case where a and 11a are provided separately.

On the other hand, a first diaphragm 13 is provided facing inside the space formed by the large diameter portion 2 and the hole 5, and is sandwiched between the intermediate plate 1 and the upper plate 7. Similarly, a second diaphragm 14 is provided facing inside the space on the small diameter portion 3 side. These two diaphragms 13 and 14 are connected by a connecting rod 15 so as to face each other at a predetermined distance (the thickness of the intermediate plate 1), as shown in detail in FIG. In addition, an O-ring 16 for opening and closing the vent hole 9 is fitted and fixed to the lower end portion thereof, that is, the portion facing one of the vent holes 9 formed in the bottom wall 8a on the side of the lower plate 11, whereby the diaphragm assembly 17 is formed. In addition,
In this case, as shown in FIG. 2, the connecting rod 15 includes an intermediate rod 15a that maintains the spacing between the diaphragms 13 and 14, and a nut portion 1 whose upper end is crimped above the first diaphragm 13.
5b, and a bolt portion 15c into which the O-ring 16 is fitted and which presses and fixes the second diaphragm 14 to the lower end of the intermediate rod 15a.

In the switch configuration described above, in order to use it as a signal inverter, as shown in FIG ^. On the other hand, a switching signal, which is a pneumatic pressure signal in the pneumatic control system, is transmitted from the ventilation hole 6 on the upper plate 7 side.
For example, it is preferable to send an ON-OFF signal of 1.4 Kg/cm ² or 0 Kg/cm ² as Px. That is, in this case, in the switch configuration described above, the first and second diaphragms 13, 1
Px is an ON signal (1.4Kg/cm ² ) from the difference in effective area of 4.
In the _case of
Kg/cm ² or OFF signal. Also, Px
At the time of the OFF signal, the vent hole 9 is opened contrary to the above, and the supply pressure Ps from the vent hole 10 causes the inverted signal _PR to be 1.4 kg/cm ² , that is, an ON signal.

Then, the inverted signal P _R from the switch used as a signal inverter is sent to the switch connected in series to this switch from the ventilation hole 6 on the upper plate 7 side, as shown in FIG. 1b. At the same time, by sending the input signal Pin from the ventilation hole 10 on the lower plate 11 side, the inverted signal P _R is generated from the ventilation hole 9, which is opened and closed by the O-ring 16 on the diaphragm 13, 14 side, that is, the inverse of the switching signal Px. As a result, an output signal Pout corresponding to the input signal is sent out, and the opening/closing function as a normal ON-OFF switch can be achieved.

On the other hand, in FIG. 1b, the switching signal Px, which is the pneumatic signal in the pneumatic control system, is directly supplied from the vent hole 6 on the upper plate 7 side, and the input signal Pin is sent from the vent hole 10 on the lower plate 11 side. Then, an output signal Pout corresponding to the switching signal Px is sent out, and a signal that operates in the opposite way to the output signal from the switch via the inverter described above is obtained.In this case, too, the normal ON-
It can perform the opening/closing function as an OFF switch.

Therefore, it is possible to selectively combine the switch configurations described above, to directly connect and send switching signals, or to use at least one switch as an inverter and connect another switch in series with it. When controlling a plurality of controlled devices using a single switching signal, it becomes possible to perform forward and reverse operations using a switch with the same configuration, which would otherwise require the use of two types of switches with different configurations.

An example of such a pneumatic circuit is shown in Figure 3, and to explain it simply, SW _A is a switch that functions as a signal inverter, SW _B and SW _C are
The switches SW _D and SW E are reverse operated by the signal inverted by SW _A , and the switches SW D and SW _E are normally operated by receiving a cut-off signal (CO signal) like SW _A. In this case, these five switches
SW _A to SW _E have the same configuration, and the switches
The four switches SW _B to SW _E other than _SW A function as ON-OFF control switches that control a plurality of controlled devices.

For example, when the cut-off signal (CO signal) as the switching signal mentioned above is ON, the inverter SW _A is closed, which causes SW _B and SW _C to open, and
SW _D and SW _E are closed.

Now, according to the present invention, as described above, a plurality of pneumatic switches capable of performing two types of functions with the same configuration are combined into a unit and configured as a pneumatic integrated switch. .

To explain this in detail, FIG. 4 shows an embodiment of a pneumatic integrated switch embodying the pneumatic circuit explained in FIG. and small diameter portion 21b
an intermediate plate 22 in which five stepped through holes 21 are arranged in parallel; An upper plate 25 having a ventilation hole 24 formed therein, a hole 26a that is laminated and joined to the lower surface of the intermediate plate 22, and corresponds to the small diameter portion 21b, and a bottom portion 26b thereof.
and a lower plate 29 having two ventilation holes 27 and 28 bored in the middle plate 22.
through hole 21 and the upper and lower plates 2 communicating with it.
A diaphragm assembly 31 having two diaphragms 30a and 30b facing into each space formed by holes 23a and 26a of holes 5 and 29.
is installed. Note that 32 in the figure is a connecting rod that connects the two diaphragms 30a and 30b;
32a is one ventilation hole 27 on the lower plate 29 side.
At the opening/closing part for opening and closing, there is also a bleed hole 3 which passes through the lower plate 29 from the stepped part of the through hole 21.
3 is drilled. Further, 34a and 34b are the intermediate plate 22 and the upper and lower plates 25 and 2.
These are bolts and nuts that are integrated in a stacked state.

Furthermore, as is clear from FIGS. 5 and 6, air connection holes 35 are provided between the three plates 25 and 35 between the switch parts SW _A to SW _E of the integrated switch 20 configured as described above. , 22, 29, and openings at both ends of these air connection holes 35 and the upper and lower plates 25, 29.
Nipples 36 for connecting pipes are fitted into the openings of the ventilation holes 24; 27 and 28, respectively. By appropriately connecting the above-mentioned nibbles 36 through conduits, the integrated switch 20 having the circuit configuration shown in FIG. 3 is completed. In this case, 37 in the figure switches the cut-off signal CO to SW _A ,
The conduit 38 leading to the ventilation holes 24 of SW _D and SW _E is
A conduit 39 guides the inverted signal from the ventilation hole 27 of SW _A to the air connection hole 35 next to it.
This is a conduit that guides the inversion signal from SW _B and SW _C to the ventilation holes 24 .

Note that each of the ventilation holes 24; 27, 28, the bleed hole 33, and the air connection hole 35 are
2; After assembling 25 and 29, the holes may be drilled or the like, or holes may be drilled in advance. Further, each plate 22; 25, 29 may be formed, for example, by plastic molding or die casting.

FIG. 7 shows another embodiment of the pneumatic integrated switch according to the present invention, in which the same parts as in FIG. 4 are designated by the same numbers.

Now, according to this embodiment, instead of the piping connection described above, air circuit boards 41 and 4 are provided on the outside of the upper and lower plates 25 and 29 constituting the integrated switch 40.
2 are stacked on top of each other, thereby making it possible to connect the ventilation holes 24; 27, 28, etc. more easily and reliably.

That is, each air circuit board 41, 42 has an eighth
As shown in figures a and b, each ventilation hole 24; 27, 2
A plurality of passage grooves 43 are formed to connect the 8 openings. The formation pattern of these passage grooves 43 is formed in accordance with a necessary air pressure signal, and in this case, an example is shown in which the circuit configuration shown in FIG. 3 is adopted. And these air circuit boards 41,
An integrated switch 40 having a desired circuit configuration can be obtained by simply stacking and bonding the upper and lower plates 42 on the outside of the upper and lower plates 25 and 29 and integrating them.

In the figure, each circuit board 41, 42 is connected to an inner plate 41a, 42a having a passage groove 43.
and external plates 41b and 42b that are joined to the outside and seal the groove 43. In this way, the inner plates 41a and 42a can be easily formed by plastic molding, metal casting, or even rubber material, and the outer plates 41b and 42b can be easily formed by metal plates, etc., so that the circuit board 41,
42 can be processed more easily. However, it is free to form these in one piece.

Further, reference numeral 44 in the figure indicates a plurality of air connection holes formed in a group at one end of the integrated switch 40. By doing so, wiring to the outside can be more easily performed.

By using the air circuit boards 41 and 42 in this way, an integrated switch 4 having a desired circuit configuration can be installed.
0 can be easily configured, it is possible to realize a logic module with high density, compactness, and high reliability, which is convenient.

In each of the embodiments described above, the diaphragm assembly 31 is composed of two diaphragms 30a,
30b and a connecting rod 32 having a switch opening/closing part 32a, there are holes 23 on the upper and lower plates 25 and 29 sides of this configuration.
However, if a diaphragm assembly 50 shown in FIGS. 9a and 9b is used, the entire structure can be made even simpler. That is, this diaphragm assembly 50 is
The first portion corresponding to the large diameter portion 21a of the intermediate plate 22
diaphragm 51 and a second diaphragm 52 corresponding to the small diameter portion 21b, both of which are connected by a fastener portion 53a at the tip of a connecting rod portion 53 integrally formed in the center of the second diaphragm 52, Furthermore, a lip portion 54 is also integrally formed below the second diaphragm 52 as a switch opening/closing means. In this way, the configuration of the diaphragm assembly 50 becomes simple and its assembly can be easily performed. Also, the same figure a
As shown in the figure, the upper and lower plates 25 and 29 are formed into a simple flat plate shape by curving the effective working portion of the diaphragm in a direction closer to each other than the portion sandwiched between the plates 22 and 25 and 29. This is advantageous in terms of molding process.

〔Effect of the invention〕

As explained above, according to the present invention, there is provided an intermediate plate in which a plurality of stepped through holes are arranged in parallel, each having a large diameter part and a small diameter part, each of which is provided with two flexible membranes facing each other;
A plurality of switches having the same configuration are arranged side by side to form a unit by first and second plates laminated and joined on both sides and having ventilation holes facing each stepped through hole portion, Moreover, by using at least one switch as an inverter of the pneumatic signal, a pneumatic integrated switch consisting of a large number of pneumatic switches having two types of switch functions of forward and reverse operation can be obtained. A large number of switches with different functions can be constructed compactly by combining multiple units depending on the circuit design.By using this in the logic circuit of a pneumatic control system, it is possible to construct individual switches with different structures for each type, unlike in the past. It is possible to eliminate the disadvantages caused by using a plurality of switches in combination, and there are various excellent effects such as an inexpensive switch that is simple in structure and easy to manufacture.

[Brief explanation of drawings]

1a and 1b are operation explanatory diagrams showing the case where the switch configuration according to the present invention is used as a signal inverter and an ON-OFF switch, FIG. 2 is a detailed diagram showing one embodiment of the diaphragm assembly, and FIG. 3 4 is a circuit diagram showing an example of a pneumatic circuit, FIG. 4 is a sectional view showing an embodiment of the pneumatic integrated switch according to the present invention, FIG. 5 is a plan view thereof, and FIG. FIG. 7 is a sectional view showing another embodiment of the present invention, and FIGS.
FIGS. 9a and 9b are a plan view of the lower air circuit board; FIGS. 9a and 9b are cross-sectional and partially detailed views of another embodiment of the diaphragm assembly; FIGS. 20, 40... pneumatic integrated switch, 21...
Stepped through hole, 21a... Large diameter part, 21b... Small diameter part, 22... Intermediate plate, 23a... Hole part, 2
3b...bottom wall, 24...ventilation hole, 25...top plate, 26a...hole, 26b...bottom wall,
27, 28...Vent hole, 29...Lower plate,
30a, 30b; 51, 52... diaphragm (flexible membrane), 31, 50... diaphragm assembly,
32... Connection rod (connection means), 32a... Opening/closing part (opening/closing means), 33... Bleed hole, 35...
...Air connection hole, 41, 42...Air circuit board, 43
... Passage groove, 44 ... Air connection hole.

Claims (1)

[Claims] 1. An intermediate plate in which a plurality of stepped through holes are arranged in parallel, each having a large diameter portion and a small diameter portion, and an intermediate plate that is joined to the side surface of the intermediate plate on the large diameter portion side and covers the large diameter portion. A first wall having a wall and a ventilation hole formed in the wall.
a second plate having a wall portion joined to the side surface of the small diameter portion of the intermediate plate and covering the large diameter portion, and two ventilation holes bored in this wall portion; two flexible membranes provided facing into the respective spaces formed by the section and the small diameter section, a connecting means for connecting both of the flexible membranes within the space, and the second plate side. an opening/closing means provided in a part of the flexible membrane to face one of the ventilation holes for opening and closing the ventilation hole; A pneumatic integrated switch characterized in that the plate No. 2 is provided with a plurality of air connection holes for connecting the respective ventilation holes. 2. An intermediate plate with a plurality of stepped through holes arranged in parallel, each consisting of a large diameter portion and a small diameter portion, a wall portion that is joined to the side surface of the intermediate plate on the large diameter portion side and covers the large diameter portion, and this wall portion. a first vent having a vent hole drilled in the
a second plate having a wall portion joined to the side surface of the small diameter portion of the intermediate plate and covering the small diameter portion, and two ventilation holes drilled in the wall portion; and the second plate having the large diameter portion. and a small diameter portion, two flexible membranes provided facing into the respective spaces formed by the small diameter portion, a connecting means for connecting the two flexible membranes in the space, and a connecting means on the second plate side. an opening/closing means provided on a part of the flexible membrane so as to face one of the ventilation holes and opening/closing the ventilation hole, the intermediate plate and the first and second plates laminated and bonded thereto; A plurality of air connection holes connecting the respective ventilation holes are bored in the plate, and openings of the respective ventilation holes and air connection holes are formed on the outside of the first and second plates. 1. A pneumatic integrated switch, characterized in that an air circuit board having a plurality of passage grooves connecting the air circuit board is disposed.