JP4149071B2 - Actuator with slave station - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an actuator with a slave station such as a solenoid valve manifold equipped with a slave station.
[0002]
[Prior art]
When a large number of external fluid pressure devices, such as fluid pressure cylinders, are driven by switching the supply and discharge of fluid using solenoid valves, a solenoid valve manifold that collects a number of solenoid valves corresponding to each external fluid pressure device is used. used.
[0003]
The solenoid valve manifold is configured by mounting each solenoid valve on a manifold base having a fluid supply passage and a fluid discharge passage common to each solenoid valve, or the fluid supply passage and the fluid discharge passage in the solenoid valve itself. In general, a manifold base is omitted so as to form a series of fluid supply passages and fluid discharge passages in a state where a part is formed and the respective solenoid valves are connected. A type in which the manifold base is omitted may be referred to as a manifold solenoid valve. In this specification, except for a part that particularly refers to one, it is collectively referred to as a solenoid valve manifold. Such a solenoid valve manifold is excellent in that high integration and space saving can be achieved.
[0004]
In the solenoid valve manifold, a slave station may be arranged at the end of the manifold base in the longitudinal direction or the end of the connected solenoid valve in the connecting direction. This slave station has a solenoid valve side connector for consolidating the wiring of each solenoid valve, and an external side connector for connecting a signal line or a power line from a control device (master station) provided outside. I have.
[0005]
The slave station has a function as a control unit incorporating a control board depending on circumstances. That is, while reducing the wiring between the master station and the slave station by serial transmission, it is possible to send signals corresponding to the individual solenoid valves by parallel transmission between the solenoid valves and the slave stations. In many cases, the slave station is provided with a control board such as a programmable controller or a setting switch for setting the address of the slave station.
[0006]
[Problems to be solved by the invention]
By the way, the solenoid valve manifold is often installed in a very small space. For this reason, there is an increasing demand for downsizing of the solenoid valve manifold.
[0007]
However, when the solenoid valve manifold is installed in a small space, it is difficult to operate the setting switch on the slave station side, maintenance work on the slave station is difficult, and wiring work is difficult. Various inconveniences occur.
[0008]
The above various inconveniences are conspicuous in the solenoid valve manifold, but similar inconveniences are also observed in other actuators with slave stations.
[0009]
The present invention has been made in view of the above circumstances, and it is one of the main problems to provide an actuator with a slave station suitable for installation in a narrow portion.
[0010]
[Means for Solving the Problems and Effects of the Invention]
Below, the means etc. which can solve the said subject are enumerated. In addition, the action, effect, specific means, etc. will be added as necessary.
[0011]
1. The actuator body is provided with a port that can be connected to external piping so that at least one of fluid input and output can be performed, and the external wiring is connected to the slave station to transmit at least one of external signals or power to the actuator body. The actuator with a slave station provided with the connection part made possible, wherein the connection of the external pipe to the port and the connection of the external wiring to the connection part are performed on the same surface side. According to this means, since the connection of the external piping to the port and the connection of the external wiring to the connection portion are performed on the same surface side, it is only necessary to secure a space for connection work on one surface side. .
[0012]
2. The actuator body is provided with a port that can be connected to external piping so that at least one of fluid input and output can be performed, and the external wiring is connected to the slave station to transmit at least one of external signals or power to the actuator body. In the actuator with a slave station provided with a connecting portion that is made possible, the slave station includes a slave station unit that is unitized, the slave station unit is detachable from the actuator body, and connection of external piping to the port An actuator with a slave station configured to attach and detach the slave station unit on the same surface side. According to this means, since the connection of the external pipe to the port and the attachment / detachment of the slave station unit are performed on the same surface side, a space for the connection work and the slave station unit attachment / detachment work is ensured only on one surface side. It will be better if you save.
[0013]
3. The actuator body is provided with a port that can be connected to external piping so that at least one of fluid input and output can be performed, and the external wiring is connected to the slave station to transmit at least one of external signals or power to the actuator body. In the actuator with a slave station provided with a connecting portion that is made possible, the slave station includes a slave station unit that is unitized, the slave station unit is detachable from the actuator body, and connection of external piping to the port A slave station-attached actuator configured so that connection of external wiring to the connection portion and attachment / detachment of the slave station unit are performed on the same surface side. According to this means, since the connection of the external pipe to the port, the connection of the external wiring to the connection part, and the attachment / detachment of the slave station unit are performed on the same surface side, the space for the connection work and the slave station unit attachment / detachment work It is sufficient to secure only one side.
[0014]
4). In the actuator with a slave station provided with a slave station having a connection part that can connect an external wiring to transmit at least one of an external signal or power to the actuator body, the slave station is a unitized slave station unit. A slave station-attached actuator, wherein the slave station unit is detachable from the actuator main body, and connection of external wiring to the connection portion and attachment / detachment of the slave station unit are performed on the same surface side. According to this means, since the connection of the external wiring to the connecting portion and the attachment / detachment of the slave station unit are performed on the same surface side, a space for the connection work and the slave station unit attachment / detachment work is ensured only on one surface side. It will be better if you keep it.
[0015]
5. The actuator with a slave station according to any one of the above means 2 to 4, wherein the slave station includes a mounting portion on which the slave station unit is mounted, and the mounting portion is fixedly installed on the actuator body. And a slave station-attached actuator, wherein connectors connected to each other are provided on opposite surfaces of the slave station unit, and the connectors are connected to each other by attaching the slave station unit to the mounting portion. According to this means, when the slave station unit is attached to the mounting portion, the connector connection between the mounting portion and the slave station unit is performed simultaneously and automatically, so that the mounting portion and the slave station unit are separated. This eliminates the need for extra wiring connection work.
[0016]
6). In the actuator with a slave station according to the above means 5, a storage space portion for storing the slave station unit is formed in the mounting portion, and when the slave station unit is stored in the storage space portion, the mounting portion and the slave station An actuator with a slave station that is configured to have a substantially rectangular parallelepiped shape with the unit. According to this means, a storage space portion is provided in the mounting portion so that the slave station unit can be stored here, and when it is mounted, the entire unit is integrated into a compact shape that is a substantially rectangular parallelepiped shape. As a result, it can be reduced in size and size.
[0017]
7). 7. The actuator with a slave station according to the above means 5 or 6, wherein a guide means is provided for guiding the slave station unit in the attaching / detaching direction when the slave station unit is attached to the mounting portion. According to this means, the presence / absence of the guide means facilitates the attachment / detachment of the slave station unit, and the attachment work of the slave station unit can be further facilitated.
[0018]
8). The actuator with a slave station according to any one of the means 5 to 7, further comprising a fixing member for fixing the slave station unit with the mounting portion, and fixing the slave station unit with the fixing member is also performed on the same surface side. An actuator with a slave station configured as described above. According to this means, the slave station unit can be securely fixed at the mounting portion, and the fixing operation can be performed on the same surface side, so that an extra space is not required.
[0019]
9. In the actuator with a slave station according to any one of the above means 1 to 8, the actuator body is configured by integrating a plurality of electromagnetic valves, and a supply / discharge port corresponding to each electromagnetic valve is provided. Actuators with slave stations that are each provided. According to this means, the number of pipes is greatly increased by aggregating a plurality of solenoid valves, but even in this case, the above advantages in terms of space can be obtained.
[0020]
10. In the actuator with a slave station described in the above means 9, the actuator body further includes a common flow path for supplying and discharging fluid to and from each electromagnetic valve, and a common port for the common flow path. The actuator with a slave station is configured such that the external piping is connected on the same surface side. According to this means, the common port can be provided on the same surface side, and the merits such as installation space and maintenance / inspection space are further increased.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment will be described with reference to FIGS. 1 to 5.
[0022]
FIG. 1 shows a perspective view of the entire solenoid valve manifold 1. As shown in the figure, the solenoid valve manifold 1 includes a plurality of manifold blocks 2. These manifold blocks 2 are arranged in one direction. End blocks 3 are arranged at both ends in the arrangement direction of the manifold blocks 2 arranged in this way. A supply / discharge block 4 is disposed between one end block 3 and the manifold block 2 adjacent thereto. An electromagnetic valve 5 is mounted on the upper side of the manifold block 2. A slave station 6 is arranged adjacent to one end block 3, specifically, the end block 3 on the side away from the supply / discharge block 4.
[0023]
The solenoid valve manifold 1 is basically composed of the above manifold block 2, end block 3, supply / discharge block 4, solenoid valve 5 and slave station 6. And the solenoid valve manifold 1 which consists of these each components is being integrally fixed on the DIN rail 8 by the retainer 7 which comprises a fixture. Instead of providing a plurality of manifold blocks 2, they may be formed in a long shape as a single member. Further, the fixture is not limited to the illustrated retainer 7, and the installation site is not limited to the DIN rail 8. Furthermore, the solenoid valve manifold may be configured as a so-called manifold solenoid valve in which the manifold block 2 is omitted.
[0024]
In the state where the manifold blocks 2 are arranged side by side, a common supply flow path and a common discharge flow path (not shown) extending in the longitudinal direction (arrangement direction) are formed therein. These common supply flow path and common discharge flow path are sealed by the end block 2 at both ends in the longitudinal direction. The common supply flow path and the common discharge flow path are communicated with a common supply port 9 and a common discharge port 10 formed in the supply / discharge block 4.
[0025]
The common supply port 9 and the common discharge port 10 are both provided on the front side of the solenoid valve manifold 1 and directed forward. The external fluid piping connected to the common supply port 9 and the common discharge port 10 is attached in the horizontal direction from the front side of the solenoid valve manifold 1. In the state where the fluid is supplied from the common supply port 9 via the external fluid piping, the fluid is always supplied to each manifold block 2 via the common supply flow path. Further, the fluid in the common discharge flow path is discharged from the external fluid pipe all at once via the common discharge port 10. Here, it is intended to use high-pressure air as the fluid, but is not limited to high-pressure air, and may be applied to liquids such as gas other than air and oil other than gas. Needless to say.
[0026]
A first output port 11 and a second output port 12 are provided on the front side of each manifold block 2. The first output port 11 and the second output port 12 are both provided on the front side of each manifold block 2 and are directed forward. The external fluid pipes connected to the first output port 11 and the second output port 12 are attached in the horizontal direction from the front side of the solenoid valve manifold 1. Then, fluid is supplied to and discharged from an external fluid pressure device such as a fluid pressure cylinder through the external fluid pipe. That is, the first output port 11 and the second output port 12 can be positioned as individual ports in relation to the common supply port 9 and the common discharge port 10.
[0027]
The electromagnetic valve 5 includes a flow path switching unit 13 and an electromagnetic switching unit 14. Among these, the flow path switching unit 13 is disposed immediately above the manifold block 2 and is detachably fixed on the manifold block 2 with a plurality of screws. The flow path switching unit 13 includes a spool that extends in the front-rear direction. The spool is switched and driven by the pilot pressure. Each manifold block 2 is formed with a plurality of flow paths that communicate with the flow path switching unit 13, and the flow paths are switched by the spool switching drive.
[0028]
The electromagnetic switching unit 14 is provided integrally with the flow path switching unit 13 in a state of being disposed at an end of the flow path switching unit 13. The electromagnetic switching unit 14 supplies a pilot pressure to the end of the spool or discharges the pilot pressure from the end of the spool, and a solenoid 16 for switching and driving the pilot valve (see FIG. (Only shown in FIG. 4).
[0029]
The solenoid valve 5 includes a single solenoid type that includes only one electromagnetic switching unit 14 and a double solenoid type that includes two electromagnetic switching units 14. In this embodiment, Both a single solenoid type and a double solenoid type are mixedly mounted. A connection cord 15 for supplying power to the solenoid 16 is extended from each electromagnetic switching unit 14.
[0030]
Therefore, the first switching state in which the common supply flow path and the first output port 11 communicate with each other and the common discharge flow path and the second output port 12 communicate with each other by the switching of the flow path by the electromagnetic switching unit 14; The common supply flow path and the second output port 12 are communicated with each other and the common discharge flow path and the first output port 11 are communicated with each other. In addition, in the double solenoid type solenoid valve 5, in addition to the first switching state and the second switching state, a common supply flow path and a common discharge flow path have both the first and second output ports 11, 12. Some of them can be switched to a neutral state not communicated with any of the above. The solenoid valve 5 is not limited to a single and double solenoid type, but may be a single solenoid type or a double solenoid type.
[0031]
The slave station 6 basically includes a pedestal 21 installed in a fixed state on the DIN rail 8 and a slave station unit 22 that is detachably mounted on the pedestal 21. As shown in FIG. 2, the slave station unit 22 is detachable from the pedestal 21. The slave station unit 22 has a substantially rectangular parallelepiped shape. The pedestal 21 is formed with a storage space 23 for storing the slave unit 22. As shown in FIG. 1, the storage space 23 is open on the front surface, the side surface and the upper surface on the end side of the solenoid valve manifold 1, and the slave unit 22 is stored in the storage space 23. The slave station 6 as a whole is collected into a compact shape having a substantially rectangular parallelepiped shape. That is, the storage space portion 23 is a space that substantially matches the outer shape of the slave station unit 22.
[0032]
A terminal block box 24 constituting a part of the slave station 6 is attached to the rear surface side of the pedestal 21. The terminal block box 24 incorporates a terminal block in which one end of the connection cord 15 extending from each electromagnetic switching unit 14 is aggregated and individually connected. As shown in FIG. 2, the pedestal 21 is provided with a connector 25 on a standing surface facing the rear surface of the slave station unit 22. The connector 25 is electrically connected to the terminal block. A connector (not shown) connected to the connector 25 is provided on the rear surface of the slave station unit 22.
[0033]
On the standing surface of the pedestal 21 where the connector 25 is formed, a guide recess 26 is provided above the connector 25 and opens forward. A step portion 27 is provided on the front side of the bottom surface of the pedestal 21. A guide groove portion 28 that opens to the step portion 27 side is provided in a part of the front side of the bottom surface of the pedestal 21. On the other hand, on the rear surface of the slave station unit 22, a guide convex portion that is inserted in the guide concave portion 26 in the horizontal direction from the front side is provided. On the front side of the lower surface of the slave unit 22, a projecting piece 29 that is engaged with the stepped portion 27 is formed. Immediately after the projecting piece 29 on the lower surface of the slave unit 22, a guide projection (not shown) to be inserted into the guide groove 28 is provided. All of the guide convex portion, the projecting piece 29 and the guide projection are integrally formed in the main body case of the slave unit 22.
[0034]
Therefore, by storing the slave station unit 22 in the storage space 23 while moving it horizontally from the front to the rear, the guide protrusion is inserted into the guide recess 26 and the guide groove 28. The guide projection is inserted into When the slave unit 22 is finally stored in the storage space 23, the connector 25 and the connector of the slave unit 22 are electrically connected.
[0035]
The standing surface of the stepped portion 27 is provided with a screw hole 30 that extends in the front-rear direction and opens forward. The projecting piece 29 is provided with a through-hole 31 penetrating forward and backward corresponding to the screw hole 30. Then, in a state where the slave station unit 22 is housed in the housing space portion 23, the slave station unit 22 is inserted into the screw hole 30 through the through hole 31 from the front, whereby the slave station unit 22 is It is fixed on the pedestal 21. In order to remove the slave station unit 22 from the pedestal 21, the fixing screw 32 is removed to the near side, and the slave station unit 22 is slid to the near side.
[0036]
The slave station unit 22 includes a control board 35 (shown only in FIGS. 4 and 5). The control board 35 is stored in a vertically placed state. The control board 35 is electrically connected to the connector. On the front side of the slave station unit 22, a power connection base 36 is provided above and a signal connection base 37 is provided below. Both of these connection bases 36 and 37 are directed forward. The power connection base 36 is connected to the power connector horizontally from the front side, and the signal connection base 37 is connected to the signal connector horizontally from the front side. Both the connection bases 36 and 37 are also electrically connected to the control board 35. Accordingly, a power supply and a predetermined signal of a predetermined voltage are output to each electromagnetic valve 5 by the control board 35 to which power and signals are supplied, so that the necessary electromagnetic valves 5 are operated appropriately.
[0037]
As described above, the common supply port 9, the common discharge port 10, the first output port 11, and the second output port 12 are all provided on the front surface and directed forward in the same direction. The connection of the external fluid piping to the port can be mounted in the horizontal direction on the front side of the solenoid valve manifold 1. Further, the space for the external fluid piping is only required on the front side of the solenoid valve manifold 1. In addition, the slave station 22 can be attached to and detached from the base 21 in the horizontal direction on the front side of the solenoid valve manifold 1. Further, the power connection base 36 and the signal connection base 37 are also provided on the front surface, and the connector connection therewith can be performed on the front surface side of the solenoid valve manifold 1.
[0038]
A transparent or translucent cover 41 is mounted on the upper surface side of the main body case of the slave unit 22 so as to be freely opened and closed. When the cover 41 is opened, a setting switch (not shown) is exposed on the upper surface side of the slave station unit 22. This setting switch is operated when the address of the slave station 6 is set. The setting switch is connected to the control board 35, and the set address is transmitted to the control board 35 side.
[0039]
A light emitting diode 42 is provided on one side of the control board 35 as shown in FIG. As the light emitting diode 42, an inexpensive diode that emits light on the surface opposite to the mounting surface to the control board 35 is used. The light emitting diode 42 is provided for monitoring for operation confirmation, and emits light when a predetermined condition is satisfied, and is extinguished when the condition is not satisfied. The light emitting state of the light emitting diode 42 can be seen from above through the display window 43 and the cover 41. Note that a plurality of light emitting diodes 42 are actually provided, and each is connected to the control board 35.
[0040]
Here, most of the light emitting diodes 42 emit light in the horizontal direction because the control board 35 is placed vertically. As a result, the amount of light emitted from the display window 43 formed on the upper surface of the slave station unit 22 may become insufficient, making it difficult to understand the light emission state. Therefore, in this embodiment, a reflecting piece 44 disposed on the side facing the light emitting diode 42 is formed integrally with the main body case of the slave station unit 22. The reflection piece 44 is integrally formed so as to extend downward from the periphery of the display window 43 and obliquely downward from the middle toward the light emitting diode 42 side. Therefore, most of the light emitted from the light emitting diode 42 is reflected by the reflecting piece 44 and guided to the outside, that is, upward from the display window 43.
[0041]
Further, as shown in FIG. 5B, a sheet 45 is attached to the upper surface side of the main body case of the slave station unit 22 so as to cover the display window 43. For convenience of explanation, in FIG. 5B, the thickness of the sheet 45 is shown to be thicker than the actual thickness, but in actuality, it is formed in a considerably thin film shape. The sheet 45 is configured by laminating a transparent film 46, a ground color film 47, and a reflection film 48 in order from the upper layer.
[0042]
The transparent film 46 is transparent or translucent and completely covers the display window 43. The ground color film 47 determines the color viewed from the front surface side of the sheet 45 (upper surface side of the slave unit 22), and is made of milky white in this embodiment. In addition, by printing characters, symbols, and the like on the ground color film 47, various information can be displayed so as to be visible from the operator side. The reflection film 48 reflects light, and in this embodiment is made of black or silver. The ground color film 47 and the reflection film 48 are formed so as to block the periphery of the display window 43 and to open the central portion excluding the periphery of the display window 43.
[0043]
Therefore, the light emitted from the light emitting diode 42 is collected in the display window 43 having a sufficient size by the light condensing by the reflection plate 44, and after being narrowed down by the reflection film 48, the light is guided to the outside. As a result, when the light emitted from the light emitting diode 42 is viewed from the outside, a sufficient amount of light is obtained and the blur is eliminated, so that the light is very easy to see.
[0044]
Next, the electrical configuration will be described with reference to FIGS. FIG. 3 is a schematic diagram showing a control system for a plurality of solenoid valve manifolds 1, and FIG. 4 is a schematic diagram showing a control system for one solenoid valve manifold 1.
[0045]
As shown in FIG. 3, the solenoid valve manifold 1 is disposed at an appropriate position in a production factory, for example. Each of the slave stations 6 of the multiple solenoid valve manifolds 1 is connected to the master station 52 through a signal line 51. The signal connector 51 is provided at the end of the signal line 51, and this signal connector is connected to the signal connection board 37. The master station 52 is a control device made up of a programmable controller, for example, and transmits a serial signal to each slave station 6 via the signal line 51. The serial signal includes an address signal, and each slave station 6 determines whether or not the signal is related to its own address set in advance by the setting switch. Performs necessary control for operating the solenoid valve 5 instructed by the master station 52.
[0046]
Each slave station 6 is connected to a power supply unit 54 via a power supply line 53. The power line 53 is provided with the power connector at the end thereof, and the power connector is connected to the power connection base 37. The power supply unit 54 supplies a predetermined voltage VG to each slave station 6.
[0047]
As shown in FIG. 4, a power supply circuit 55 connected to the power supply line 53 is mounted on the control board 35. The power supply circuit 55 is composed of, for example, a DC / DC converter or the like, and generates a first voltage V1-G1 and a second voltage V2-G2 that are insulated from each other.
[0048]
A serial / parallel conversion circuit 56 connected to the signal line 51 is mounted on the control board 35. The serial / parallel conversion circuit 56 operates in response to the first voltage V1-G1. The serial signal transmitted from the master station 52 is converted into n-point parallel signals (n is 16 in this embodiment). Convert to This parallel signal is an on / off signal for instructing whether or not each solenoid 16 is excited.
[0049]
On the control board 35, the same number (n) of zener diode built-in photocouplers 57 as the number of serial signals are mounted. Each zener diode built-in photocoupler 57 incorporates a light emitting diode 58 on the input side and an NPN phototransistor 59 on the output side. The phototransistor 59 is a current amplifying element that is turned on when the light emitting diode 58 emits light and flows a predetermined amplified current between the collector and the emitter. A zener diode 60 is connected between the base and collector of the phototransistor 59. The Zener diode 60 is for absorbing a surge voltage.
[0050]
One end of a resistor 61 is connected to the anode side of each light emitting diode 58, and the voltage V1 generated by the power supply circuit 55 is applied to the other end of the resistor 61. A parallel signal line of the serial / parallel conversion circuit 56 is connected to the cathode side of each light emitting diode 58. Accordingly, when an ON signal is transmitted from the serial / parallel conversion circuit 56 via the parallel signal line, the corresponding light emitting diode 58 is turned on.
[0051]
The emitter side of each phototransistor 59 is set to a ground voltage G2 generated by the power supply circuit 55. On the other hand, one end of a solenoid 16 is connected to the collector side of each phototransistor 59. A voltage V <b> 2 generated by the power supply circuit 55 is applied to the other end of each solenoid 16. Therefore, when the light from the light emitting diode 58 is applied to the base light receiving portion of the phototransistor 59, the phototransistor 59 is turned on and a predetermined amplified current flows to the solenoid 16. Thereby, the solenoid 16 is excited.
[0052]
On the other hand, when the light emitting diode 58 is turned off, the phototransistor 59 is turned off. At this time, the solenoid 16 generates a surge voltage that is 10 times or more the power supply voltage. This surge voltage causes malfunction or failure. However, when this surge voltage reaches or exceeds the Zener voltage of the Zener diode 60, a reverse current suddenly flows through the Zener diode 60 and the phototransistor 59 is turned on, so that the surge voltage is absorbed. Thereby, in addition to the effect of suppressing the surge voltage, the response when the solenoid 16 is turned off is improved. By using a photocoupler such as the zener diode built-in photocoupler 57, the serial / parallel conversion circuit 56 side and the solenoid 16 side can be kept in an insulated state.
[0053]
According to the embodiment described above, the common supply port 9, the common discharge port 10, the first output port 11, and the second output port 12 are all provided in the front and directed forward in the same direction. The connection of the external fluid piping to each port can be mounted in the horizontal direction on the front side of the solenoid valve manifold 1. Further, the space for the external fluid piping is only required on the front side of the solenoid valve manifold 1. In addition, the slave station 22 can be attached to and detached from the base 21 in the horizontal direction on the front side of the solenoid valve manifold 1. Further, the power connection base 36 and the signal connection base 37 are also provided on the front surface, and the connector connection therewith can be performed on the front surface side of the solenoid valve manifold 1. Therefore, it is only necessary to secure a predetermined space on the front side of the solenoid valve manifold 1, and the solenoid valve manifold 1 can be arranged in a narrow portion. In addition, the slave unit 22 can be removed using the front side space used for the external fluid piping, and the space can be used effectively.
[0054]
Even if the slave station unit 22 is removed from the base 21 while the connection cord 15 extending from each solenoid valve 5 is connected to the terminal block box 24 of the slave station 6, power supply from the power supply unit 54 is continued to the slave station unit 22. Is done. Therefore, there is an advantage that setting can be performed by the setting switch on the detached slave unit 22 side, and the setting operation becomes extremely easy.
[0055]
Further, when the slave unit 22 is mounted from the base 21, each surface of the storage space 23 serves as a guide, and positioning can be performed by the guide recess 26 and the guide groove 28, which facilitates positioning work. Moreover, since the connector 25 is automatically connected to the connector on the slave station unit 22 side at the time of positioning, a separate connection work can be substantially omitted. Further, the guide concave portion 26 and the guide convex portion are engaged with the rear surface side of the slave station unit 22, and in this state, it is only necessary to fix the slave station unit 22 with the fixing screw 32 from the front side of the slave station unit 22. The fixing work of 22 becomes easy and the fixed state is also ensured.
[0056]
In the embodiment described above, for example, a part of the configuration can be appropriately changed as follows. Of course, other modifications not exemplified below are also possible.
[0057]
In the above embodiment, all the ports 9 to 12 are installed forward on the front side of the solenoid valve manifold 1, the slave station unit 22 is attached and detached in the same direction, and the connection bases 36 and 37 are connected. Was installed in the same direction. Instead, as shown in FIG. 6, the ports 11 and 12 (the common supply port and the common discharge port are not shown, but are also installed on the upper surface so as to be directed upward) are electromagnetic. While being installed upward on the upper surface side of the valve manifold 1, the attaching / detaching direction of the slave station unit 22 and the directions of the connection bases 37, 37 may be similarly set to the upper side. The solenoid valve manifold 1 configured as described above is advantageous when a predetermined space exists above the solenoid valve manifold 1.
[0058]
As shown in FIG. 7, the control board 35 may be stored horizontally with respect to the slave station unit 22. In this case, the operation confirming light emitting diode 42 emits light upward. Therefore, in this case, instead of the reflecting plate 44 shown in FIG. 5A, the reflecting plate 71 disposed around the optical path is replaced with the slave unit 22 so as to prevent light from leaking sideways. It is preferable to integrally form the case body.
[0059]
The zener diode built-in photocoupler 72 shown in FIG. 8A may be used in place of the zener diode built-in photocoupler 57 shown in FIG. As compared with the photocoupler 57, the photocoupler 72 is obtained by adding an NPN transistor 73 on the output side and connecting the emitter of the phototransistor 59 to the base of the transistor 73. By using this Zener diode built-in photocoupler 72, the current amplification factor can be increased as compared with the above-described embodiment, and a relatively large current is passed through the solenoid 16 to ensure the operation of the solenoid 16. There are advantages that are possible.
[0060]
The zener diode built-in photocoupler 74 shown in FIG. 8B may be used in place of the zener diode built-in photocoupler 57 shown in FIG. The photocoupler 74 is different from the photocoupler 72 described in FIG. 8A only in that the connection position of the Zener diode 60 is different. That is, here, a Zener diode 60 is connected between the base and collector of the transistor 73. The use of the zener diode built-in photocoupler 74 also has the advantage that the current amplification factor can be higher than that of the above-described embodiment, and a relatively large current can flow through the solenoid 16.
[0061]
In FIG. 4, each photocoupler 57 is individually provided corresponding to each solenoid 16, but as shown in FIG. 9, a light emitting diode 58, a phototransistor 59, and a Zener diode 60 are provided in the photocoupler body. You may use the photocoupler component which makes a group which contained two or more sets. In this case, as compared with the case where the photocouplers 57 are individually provided as shown in FIG. 4, the control board 35 is reduced in size by reducing the number of elements mounted on the control board 35, reducing the occupied area of the photocoupler 57, and the like. Further simplification of the mounting process can be achieved.
[0062]
-Although the solenoid valve manifold 1 was demonstrated, it is also applicable to the actuator with a slave station other than that.
[0063]
Next, characteristic means that can be understood from each of the embodiments described above are listed below.
[0064]
(1) A display in which a substrate is housed in a main body case, a light emitting element is mounted on the substrate, and a display window in which a light emitting state of the light emitting element can be visually recognized is formed in a part of the main body case. In the slave station unit 22), the substrate is disposed along a surface substantially orthogonal to the display window surface, and a reflector extending from the vicinity of the display window of the case body to a position facing the light emitting element is provided in the case body. And a part of light emitted from the light emitting element is reflected by the reflecting plate toward the display window. According to this means, even when a so-called vertical substrate type and an inexpensive light emitting element is used, a sufficient amount of light is emitted from the display window, and the light emitting state of the light emitting element is easily seen. In addition, by integrally forming the reflector on the case body, it is possible to suppress an increase in the number of parts and assembly man-hours.
[0065]
(2) In the above means 1, at least a tip side of the reflector plate is directed to the light emitting element side. According to this means, light directed from the light emitting element toward the non-display window side is also reflected by the reflecting plate and guided to the display window side.
[0066]
(3) In a display (a slave unit 22 in the embodiment) in which a light emitting element is built in a main body case and a display window in which a light emitting state of the light emitting element can be visually recognized is formed in a part of the main body case. An indicator with a light-reflective film covering the periphery of the display window area on the surface side of the window. According to this means, the display window can be made relatively large to secure the amount of light, while the light can be focused by the light reflective film, and clear light with sufficient light amount and less blur can be visually recognized from the outside. be able to.
[0067]
(4) In a display (a slave unit 22 in the embodiment) in which a light emitting element is built in a main body case and a display window in which a light emitting state of the light emitting element can be visually recognized is formed in a part of the main body case. A sheet is attached to the display window forming surface of the main body case so as to cover the window, and the sheet has a light transmission layer covering the entire display window and a light reflection layer covering only the periphery in the display window region. . According to this means, the same advantage as the above means (3) can be obtained, and also the advantage that dust can be prevented from entering from the display window and the seat can be easily attached is obtained.
[0068]
(5) A control device (the slave station 6 or the slave station unit 22 in the embodiment) is provided that collects and arranges a plurality of solenoid valves whose flow paths are switched based on the drive of the solenoid, and drives and controls the solenoids. In the solenoid valve manifold, the control device includes a photocoupler with a built-in zener diode, the photocoupler includes a light emitting element on the input side and a phototransistor on the output side, and a zener diode is connected to the phototransistor. The solenoid is turned on and off via the photocoupler with a built-in Zener diode, and the surge voltage generated when the solenoid is turned off is absorbed by the cooperation of the Zener diode and the phototransistor built in the photocoupler. Solenoid valve manifold. If comprised in this way, there exists an advantage that the response speed of a solenoid valve becomes quick by absorbing the surge voltage at the time of OFF of a solenoid first. Further, it is not necessary to prepare a surge voltage absorbing element separately or mount it on the control board. Thereby, cost reduction and space saving of the control apparatus attached to the solenoid valve manifold can be achieved. In addition, since a dedicated circuit for absorbing surge voltage is not required, an improvement in noise resistance can be expected.
[0069]
(6) In the above means (5), the control device includes a serial / parallel conversion circuit for converting a serial signal transmitted from the outside into a parallel signal, and the parallel signal is input to the input side of the photocoupler with a built-in Zener diode. A solenoid valve manifold configured so that the light-emitting element emits light and the phototransistor is turned on when the parallel signal is an ON signal. According to this means, it is possible to reduce wiring between the outside and the control device by a serial signal, and there is an advantage that individual commands are facilitated by a parallel signal inside the solenoid valve manifold.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an entire solenoid valve manifold according to an embodiment.
FIG. 2 is a perspective view showing a state where a slave station is removed from a solenoid valve manifold.
FIG. 3 is a schematic circuit diagram showing the entire system including a large number of solenoid valve manifolds.
FIG. 4 is a schematic circuit diagram showing a system of one solenoid valve manifold.
FIGS. 5A and 5B are partial cross-sectional views illustrating a configuration around a display window of a slave unit.
FIG. 6 is a perspective view showing a state where a slave station is removed from the solenoid valve manifold according to another embodiment.
FIG. 7 is a partial cross-sectional view showing a configuration around a display window of a slave station unit according to another embodiment.
8A and 8B are circuit diagrams showing a Zener diode built-in photocoupler according to another embodiment.
FIG. 9 is a circuit diagram showing a Zener diode built-in photocoupler according to another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Solenoid valve manifold as actuator, 2 ... Manifold block, 5 ... Solenoid valve, 6 ... Slave station, 9 ... Common supply port as common port, 10 ... Common discharge port as common port, 11 ... Port or supply / discharge 1st output port as a port, 12 ... 2nd output port as a port or supply / exhaust port, 16 ... Solenoid as electrical drive means, 21 ... Base as mounting part, 22 ... Slave unit, 23 ... Storage space , 24 ... terminal block box, 25 ... connector, 26 ... guide recess as guide means, 28 ... guide groove part as guide means, 30 ... screw hole, 31 ... through hole, 32 ... fixing screw as fixing member, 35 ... Control board, 36... Power supply connection base as connection part, 37... Signal connection base as connection part.

Claims (6)

An actuator body port and the external pipe can be connected is provided to perform at least one of the input or output of a fluid,
Slave station unit connecting section at least one signal or power from the external power supply and can be connected to external wiring to be transmitted to the actuator body is provided, and fixedly installed in the actuator body, the slave station In the actuator with a slave station provided with a slave station having a mounting portion for mounting the unit ,
The slave station unit with a detachable with respect to the mounting portion,
Provided with connectors that are connected to each other on the mounting portion and the opposite surfaces of the slave station unit, and configured so that the connectors are connected to each other by attachment to the mounting portion of the slave station unit,
While configuring the connection of external piping to the port, the connection of external wiring to the connection portion, and the attachment and detachment of the slave unit is performed on the same surface side,
The slave station-attached actuator is characterized in that the connection direction of the external pipe to the port and the attachment / detachment direction of the slave station unit are the same . The actuator with a slave station according to claim 1 ,
The mounting portion is formed with a storage space portion for storing the slave station unit. When the slave station unit is stored in the storage space portion, the mounting portion and the slave station unit are configured to have a substantially rectangular parallelepiped shape. Actuator with slave station. The actuator with a slave station according to claim 1 or 2 ,
An actuator with a slave station provided with guide means for guiding the slave station unit in the attaching / detaching direction when the slave station unit is attached to the mounting portion. In the actuator with a slave station in any one of Claims 1 thru | or 3 ,
An actuator with a slave station, comprising: a fixing member for fixing the slave station unit at the mounting portion, wherein the slave unit is fixed by the fixing member on the same surface side. In the actuator with a slave station in any one of Claims 1 thru | or 4 ,
The actuator body is an actuator with a slave station which is configured by arranging a plurality of solenoid valves in a collective manner, and is provided with a supply / discharge port corresponding to each solenoid valve. The actuator with a slave station according to claim 5 ,
The actuator body further includes a common flow path for supplying and discharging fluid to and from each solenoid valve, and a common port for the common flow path, and connection of external piping to the common port is also performed on the same surface side. Actuator with slave station configured to be performed.

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