Manifold solenoid valve and valve seat

Abstract

The valve seat (15) has a valve seat body (20) formed with a connector housing portion (37) and a substrate mounting hole (38), a substrate assembly (42) provided with a plurality of output terminals and a plurality of input terminals respectively connected to the output terminals through output wires, and mounted to the substrate mounting hole (38), a relay connector (41) provided with a solenoid side connecting portion connected to a solenoid terminal and a substrate side connecting portion connected to the output terminal, and mounted to the connector housing portion (37), and a through hole (55) provided in the valve seat body (20) in communication with the connector housing portion (37) for exposing a part of the relay connector (41) to the outside, so that the valve seats (15) are butted against each other to form a manifold solenoid valve. The relay connector (41) mounted to the valve seat (15) indicates the type of the solenoid valve.

Description

TECHNICAL FIELD

[0001] The present application relates to a manifold solenoid valve and a valve seat having a plurality of solenoid valves collected to form a solenoid valve assembly. BACKGROUND

[0002] A solenoid valve assembly formed by collecting a plurality of solenoid valves is called a solenoid valve manifold or a manifold solenoid valve. As described in Patent Literature 1, each solenoid valve has a valve housing, that is, a main valve block, provided with a spool shaft, that is, a main valve shaft, having a switching flow path, and a solenoid block mounted to the main valve block.

[0003] In the solenoid valve manifold, there is a split type in which solenoid valves and base blocks, that is, valve seats, on which the solenoid valves are mounted, are collected as solenoid valve units. Patent Literature 2 discloses a manifold solenoid valve of the split type. The solenoid valve units are in a state of being collected and are mounted or fastened by screw members to a support member called a DIN rail.

[0004] The solenoid valve has a single solenoid valve in which one solenoid is embedded in the solenoid block, and a double solenoid valve in which two solenoids are embedded. The single solenoid valve drives the main valve shaft by one solenoid, and if the application of a drive signal to the solenoid is stopped, the main valve shaft is restored to the original position by a restoring force formed by a spring force or an air pressure. The double solenoid valve can maintain the original state of the main valve shaft until a drive signal is applied to the other solenoid even if the application of a drive signal to one solenoid is stopped. Patent Literature 1 discloses a double solenoid valve.

[0005] In the manifold solenoid valve, there are a positive common type in which the positive side terminal of the coil is used as a common terminal, that is, a common terminal, and a negative common type in which the negative side terminal of the coil is used as a common terminal.

[0006] In order to apply a drive signal from an external controller to each solenoid, a cable is connected to the wiring block of the manifold solenoid valve. A substrate is mounted on each valve seat, and a printed wiring provided on the substrate has an output wiring for transmitting a drive signal to a solenoid and a connection wiring for transmitting a drive signal to an adjacent other substrate.

[0007] A plug-in connector, that is, a relay connector, is mounted to the base block, and when the solenoid valve is mounted to the valve seat, a pin provided to the connection terminal of the solenoid valve is inserted into the relay connector. Patent Literature 3 discloses a stacked type manifold solenoid valve used by joining a plurality of manifold bases, that is, valve seats. In order to connect the connection terminal of each connection wiring to the input terminal of the substrate provided to the adjacent other base block, the adjacent substrates are connected by a connector member, so that the connection wirings of the adjacent substrates are connected.

[0008] PRIOR ART DOCUMENTS

[0009] PATENT LITERATURE

[0010] Patent Literature 1: Japanese Patent Application Laid-Open No. 8-35573

[0011] Patent Literature 2: Japanese Patent Application Laid-Open No. 2010-174964

[0012] Patent Literature 3: Japanese Patent Application Laid-Open No. 2004-36841 SUMMARY

[0013] PROBLEMS TO BE SOLVED BY THE INVENTION

[0014] The pattern of the output wiring and the connection wiring provided to the substrate differs depending on whether the solenoid valve mounted to the valve seat is a single solenoid valve or a double solenoid valve. In addition, the plug-in connector, that is, the relay connector into which the pin of the connection terminal of the solenoid valve is inserted, differs in terms of whether the wiring specification of the manifold solenoid valve is positive common type or negative common type. As a result, in the manifold solenoid valve of the stacked type, the specification of the valve seat is determined depending on the specification of the solenoid valve mounted to the valve seat and the wiring specification of the manifold solenoid valve. Moreover, at the time of assembly of the manifold solenoid valve or at the time of maintenance of the manifold solenoid valve, it is necessary to confirm the specification of the valve seat.

[0015] Therefore, depending on the specification of the valve seat, a mark or a character or the like indicating each type is provided to the valve seat. Moreover, different molding dies for molding the valve seat are required depending on the type of the specification of the valve seat, and a plurality of molding dies for the valve seat need to be provided.

[0016] An object of the present application is to provide a manifold solenoid valve and a valve seat, without providing a plurality of molding dies for the valve seat, by which the type of the solenoid valve is indicated by the relay connector mounted to the valve seat.

[0017] TECHNICAL SOLUTION FOR SOLVING THE PROBLEM

[0018] The manifold solenoid valve of the present application has at least one solenoid valve unit including a solenoid valve provided with at least one solenoid and a valve seat on which the solenoid valve is mounted, and has: a substrate assembly provided with a plurality of output terminals and a plurality of input terminals connected to the output terminals through output wiring respectively, and mounted to the valve seat; a relay connector provided with a solenoid side connection portion connected to a terminal of the solenoid and a substrate side connection portion connected to the output terminal, and mounted to the valve seat; and a through-hole provided to the valve seat for exposing a part of the relay connector mounted to the valve seat to the outside.

[0019] The valve seat of the present application is provided with an electromagnetic valve having at least one solenoid, and the valve seats are butted against each other to form a manifold electromagnetic valve. The valve seat has a valve seat main body formed with an electromagnetic valve mounting surface, a connector housing portion opened on the electromagnetic valve mounting surface, and a substrate mounting hole extending in the width direction; a substrate assembly provided with a plurality of output terminals and a plurality of input terminals connected to the output terminals through output wires, and mounted in the substrate mounting hole; a relay connector provided with a solenoid side connecting portion connected to solenoid terminals of the solenoid, and a substrate side connecting portion connected to the output terminals, and mounted in the connector housing portion; and a through hole provided in the valve seat main body in communication with the connector housing portion, for exposing a part of the relay connector mounted in the connector housing portion to the outside.

[0020] Inventive Effects

[0021] The electromagnetic valve forming the manifold electromagnetic valve has specifications of a double solenoid valve and a single solenoid valve, and the wiring specification of the manifold electromagnetic valve has a positive common type and a negative common type. A plurality of relay connectors are prepared corresponding to the specifications of the valve seat determined by the combination of the specifications of the electromagnetic valve and the wiring specification of the manifold electromagnetic valve. The relay connector is mounted in the valve seat in order to connect the solenoid of the electromagnetic valve and the output terminals of the substrate assembly. The color of the relay connector is different according to the specification of the valve seat, and a part of the relay connector is exposed to the outside from the valve seat. Furthermore, by confirming the color of the relay connector from the outside, the specification of the valve seat can be confirmed. Thus, without providing a mark or a letter or the like on the valve seat indicating each mold corresponding to the specification of the valve seat, the valve seat can be manufactured using one molding mold. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a perspective view showing the front side of a manifold electromagnetic valve of an embodiment.

[0023] Figure 2 is a perspective view showing the back side of Figure 1 .

[0024] Figure 3 is an exploded perspective view when an electromagnetic valve unit is viewed from the front side.

[0025] Figure 4 is an exploded perspective view when an electromagnetic valve unit is viewed from the back side.

[0026] Figure 5 is an enlarged perspective view when a valve seat is viewed from the front side.

[0027] Figure 6 is an enlarged perspective view when a valve seat is viewed from the bottom side.

[0028] Figure 7This is a partial sectional perspective view of a valve seat with a relay connector installed.

[0029] Figure 8 This is a wiring diagram of a positive common type solenoid valve and a base plate assembly. (A) represents a double solenoid valve, and (B) represents a single solenoid valve.

[0030] Figure 9 This is a wiring diagram of a negative common type solenoid valve and a base plate assembly. (A) represents a double solenoid valve, and (B) represents a single solenoid valve.

[0031] Figure 10 (A) is a top view showing the state of the two substrate assemblies combined, (B) is a cross-sectional view along line 10B-10B in (A), and (C) is a cross-sectional view of the same part as (B) showing the state of the two substrate assemblies separated.

[0032] Figure 11 yes Figure 10 (A) Rear view.

[0033] Figure 12 (A) is a side view of the valve seat, and (B) is a sectional view along line 12B-12B in (A).

[0034] Figure 13 This is a partial cutaway perspective view of the valve seat, showing the side with the substrate assembly mounted on it. Detailed Implementation

[0035] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Figure 1 and Figure 2 The illustrated manifold solenoid valve 10 has a stacked solenoid valve assembly 12 formed by assembling four solenoid valve units 14. Each solenoid valve unit 14 has a valve seat 15 on which a solenoid valve 11 is mounted. The solenoid valve 11 has a main valve block 13a and a solenoid block 13b mounted on the main valve block 13a. The solenoid valve assembly 12 is formed by mating the valve seats 15 of the solenoid valve units 14 together. Furthermore, Figure 1 and Figure 2 The number of solenoid valve units 14 constituting the solenoid valve assembly 12 is one example. The solenoid valve assembly 12 can be formed by any number of solenoid valve units 14, thereby assembling a manifold solenoid valve 10.

[0036] Piping blocks 16a and 16b are connected to both ends of solenoid valve assembly 12, which is mounted on piping blocks 16a and 16b. Connector plates 19, each equipped with a supply port 18 and an exhaust port 17, are mounted on each piping block 16a and 16b. The supply port 18 is connected to an air supply source via piping (not shown). The exhaust port 17 is connected to an exhaust pipe (not shown) or a muffler as needed. If an exhaust pipe or muffler is not required, the exhaust port 17 may not be connected to any object. A cover member 19a, identical in shape to the connector plate 19, is detachably mounted on the surface of piping blocks 16a and 16b. Interchanging the cover member 19a and the connector plate 19 results in the supply port 18 and exhaust port 17 being mounted on the surface of piping blocks 16a and 16b.

[0037] like Figure 3 and Figure 4 As shown, the valve seat 15 has a valve seat body 20 molded from resin into a generally rectangular shape, a connector plate 23 mounted on the valve seat body 20, and a relay connector 41 and a base plate assembly 42 mounted on the valve seat body 20. A solenoid valve mounting surface 21 is provided on the surface of the valve seat body 20, and a solenoid valve 11 is mounted on the solenoid valve mounting surface 21. A connector plate 23 with two output ports 22a and 22b is mounted on the front side of each valve seat body 20, and each output port 22a and 22b is connected to a pneumatic working device via piping.

[0038] like Figure 3 and Figure 4 As shown, the valve seat body 20 has a supply hole 24 and two exhaust holes 25a and 25b. When multiple valve seats 15 are connected, a supply passage is formed in the valve seat assembly through the multiple supply holes 24, a first exhaust flow path is formed through the multiple exhaust holes 25a, and a second exhaust flow path is formed through the multiple exhaust holes 25b. The supply passage is connected to the supply port 18, and each exhaust flow path is connected to the exhaust port 17.

[0039] like Figure 5 As shown, a supply connection hole 26 with an opening on the solenoid valve mounting surface 21 is provided on the valve seat body 20, and the supply connection hole 26 communicates with the supply hole 24. Two output connection holes 27a and 27b are provided on both sides of the supply connection hole 26, with output connection hole 27a communicating with output port 22a and output connection hole 27b communicating with output port 22b. An exhaust connection hole 28a is provided adjacent to the output connection hole 27a, and an exhaust connection hole 28b is provided adjacent to the output connection hole 27b. Each exhaust connection hole 28a and 28b communicates with the exhaust port 17 via exhaust holes 25a and 25b.

[0040] The main valve block 13a has an input port communicating with the supply connection port 26, two output ports communicating with the respective output connection ports 27a and 27b, and two exhaust ports communicating with the exhaust connection ports 28a and 28b. These ports are not shown in the diagram. A main valve shaft (not shown) is embedded within the main valve block 13a. The main valve shaft switches the flow path between a position where the supply connection port 26 of the valve seat 15 is connected to one output connection port 27a to supply compressed air to the output port 22a, and a position where the supply connection port 26 is connected to the other output connection port 27b to supply compressed air to the output port 22b. When the output connection port 27a is connected to the output port 22a, the output port 22b is connected to the exhaust connection port 28b. When the output connection port 27b is connected to the output port 22b, the output port 22a is connected to the exhaust connection port 28a.

[0041] The manifold solenoid valve 10 has two piping blocks 16a and 16b, so compressed air can be supplied from the two supply ports 18 to the supply port 24. However, it is also possible to provide only one of the two piping blocks 16a and 16b. A cover part 23a, which is the same shape as the connector plate 23, is detachably mounted on the surface of the main valve block 13a. If the cover part 23a and the connector plate 23 are interchanged, the manifold solenoid valve 10 is configured such that the output ports 22a and 22b are mounted on the main valve block 13a.

[0042] At least one solenoid, i.e., a coil, is embedded within the solenoid block 13b. Pilot gas is supplied to the piston mounted on the main valve shaft via a drive signal supplied to the solenoid, driving the main valve shaft axially. Thus, the solenoid valve 11 is an indirect-operation type with a pilot solenoid valve. An exhaust port 31 for discharging the pilot gas supplied to the piston on the main valve shaft to the outside is provided in the valve seat body 20, and the exhaust port 31 communicates with the pilot port located in the main valve block 13a. In the case where the solenoid valve 11 is an externally piloted type, a pilot gas supply port 32 is provided in the valve seat 15 to supply pilot gas to the piston from the outside.

[0043] like Figure 1 and Figure 2 As shown, end block 33a is integrally formed with piping block 16a, and end block 33b is integrally formed with piping block 16b. The manifold solenoid valve 10 can be mounted on a support platform (not shown) by installing screws in the mounting holes 34 provided in each end block 33a and 33b. Furthermore, the manifold solenoid valve 10 can be mounted on a DIN rail (not shown) by fixing end blocks 33a and 33b to the DIN rail.

[0044] like Figure 1As shown, power supply block 35 is mounted on end block 33a. Power supply block 35 has a connector bracket 36 for connecting a cable to an external controller, and connectors (not shown) disposed on connector bracket 36 are electrically connected to solenoids embedded in each solenoid block 13b. Thus, a drive signal from the controller is applied to each solenoid, controlling the supply of compressed air toward the pneumatic working equipment by switching the flow path based on the main valve shaft.

[0045] like Figure 3 to Figure 5 As shown, the connector housing 37 is formed on the back side of the valve seat body 20 with an opening in the solenoid valve mounting surface 21. Furthermore, a substrate mounting hole 38 is formed in the valve seat body 20, and the substrate mounting hole 38 extends through the width direction of the valve seat body 20. When the relay connector 41 is mounted on the connector housing 37 and the solenoid valve 11 is disposed on the solenoid valve mounting surface 21 of the valve seat 15, the fitting portion 13c provided with the solenoid terminal engages with the relay connector 41.

[0046] The base plate assembly 42 is inserted into the base plate mounting hole 38 from one side and mounted on the valve seat body 20. The base plate assembly 42 includes a base plate 43 and a base plate connector 44, and the base plate assembly 42 is formed by the combination of the base plate 43 and the base plate connector 44. When the valve seats 15 on which the base plate assemblies 42 are mounted are mated together sideways, the base plate 43 is mounted on the base plate connector 44 of the adjacent other valve seats 15, and the input terminal provided on the base plate 43 is connected to the connection terminal of the adjacent other base plate connector 44. Thus, all base plate assemblies 42 are connected and the wiring provided on the base plate assemblies 42 is connected, so that the drive signal from the controller is applied to each solenoid.

[0047] The solenoid valve 11 is available in single-sole valve (with a single solenoid) and double-sole valve (with two solenoids). The manifold solenoid valve 10 is available in forms that include either a single-sole valve or a double-sole valve 11, or a combination of both. Furthermore, the wiring specifications for the manifold solenoid valve 10 include a positive common type (using the positive terminal of the solenoid, i.e., the coil, as a common terminal) and a negative common type (using the negative terminal as a common terminal).

[0048] Figure 8 This is a wiring diagram of the solenoid valve and the baseboard assembly when the wiring specification is positive common type. (A) indicates the case where the solenoid valve is a double solenoid valve, and (B) indicates the case where the solenoid valve is a single solenoid valve. On the other hand, Figure 9 This is a wiring diagram of the solenoid valve and the baseboard assembly when the wiring specification is a negative common valve. (A) indicates that the solenoid valve is a double solenoid valve, and (B) indicates that the solenoid valve is a single solenoid valve.

[0049] exist Figure 8 and Figure 9In the present embodiment, with respect to the electromagnetic valve 11, a double solenoid valve is denoted by reference numeral 11a, and a single solenoid valve is denoted by reference numeral lib. With respect to the relay connector 41, a positive common type is denoted by reference numeral 41a (first relay connector), and a negative common type is denoted by reference numeral 41b (second relay connector). Further, with respect to the substrate assembly 42, a substrate assembly for a double solenoid valve is denoted by reference numeral 42a, and a substrate assembly for a single solenoid valve is denoted by reference numeral 42b. In Figure 8 and Figure 9 In the present embodiment, a wiring pattern constituted by a substrate 43 and a substrate connector 44 is shown schematically.

[0050] The double solenoid valve 11a has solenoid terminals of the positive side and the negative side of the first solenoid SOL.A and the second solenoid SOL.B, and has a total of four solenoid terminals. The single solenoid valve lib has solenoid terminals of the positive side and the negative side of the single first solenoid SOL.A, and has a total of two solenoid terminals.

[0051] The relay connectors 41a, 41b have four solenoid side connection portions 1 to 4 connected to the solenoid terminals.

[0052] As shown in Figure 8 (A), the positive common type relay connector 41a connected to the double solenoid valve 11a has a first substrate side connection portion A connected to the solenoid side connection portion 2, which is electrically connected to the solenoid terminal (negative terminal) of one side of the first solenoid SOL.A via a first internal wiring. The relay connector 41a has a second substrate side connection portion B connected to the solenoid side connection portion 4, which is electrically connected to the solenoid terminal (negative terminal) of one side of the second solenoid SOL.B via a second internal wiring. The relay connector 41a has a common connection portion, that is, a common substrate side connection portion COM (common connection portion COM) connected to the two solenoid side connection portions 1, 3, which is electrically connected to the solenoid terminals (positive side) of the other sides of the first solenoid SOL.A and the second solenoid SOL.B via a third internal wiring.

[0053] As shown in Figure 8 (B), when the relay connector 41a is connected to the single solenoid valve lib, the solenoid terminal (negative side) of one side of the first solenoid SOL.A is connected to the solenoid side connection portion 2, and the first substrate side connection portion A is electrically connected to the solenoid terminal (negative terminal) of one side of the first solenoid SOL.A via an internal wiring. The solenoid terminal (positive side) of the other side of the first solenoid SOL.A is connected to the solenoid side connection portion 1, and the common substrate side connection portion COM is electrically connected to the solenoid terminal (positive side) of the other side of the first solenoid SOL.A via an internal wiring.

[0054] As the relay connector 41a connected to the single solenoid valve 11b, the second substrate side connecting portion B and the internal wiring connected thereto are not required. Therefore, the relay connector 41a connected to the single solenoid valve 11b can have or can not have the second substrate side connecting portion B and the internal wiring connected thereto.

[0055] As shown in Figure 9 (A), the negative common type relay connector 41b connected to the double solenoid valve 11a has the first substrate side connecting portion A connected to the solenoid side connecting portion 1, which is electrically connected to one solenoid terminal (positive terminal) of the first solenoid SOL.A via the first internal wiring. The relay connector 41b has the second substrate side connecting portion B connected to the solenoid side connecting portion 3, which is electrically connected to one solenoid terminal (positive terminal) of the second solenoid SOL.B via the second internal wiring. The relay connector 41b has the common connecting portion, that is, the common substrate side connecting portion COM connected to the two solenoid side connecting portions 2, 4, which are electrically connected to the other solenoid terminals (negative side) of the first solenoid SOL.A and the second solenoid SOL.B via the third internal wiring.

[0056] As shown in Figure 9 (B), when the relay connector 41b is connected to the single solenoid valve 11b, one solenoid terminal (positive side) of the first solenoid SOL.A is connected to the solenoid side connecting portion 1, and the first substrate side connecting portion A is electrically connected to the one solenoid terminal (positive terminal) of the first solenoid SOL.A via the internal wiring. The other solenoid terminal (negative side) of the first solenoid SOL.A is connected to the solenoid side connecting portion 2, and the common substrate side connecting portion COM is electrically connected to the other solenoid terminal (negative side) of the first solenoid SOL.A via the internal wiring.

[0057] As the relay connector 41a connected to the single solenoid valve 11b, the second substrate side connecting portion B and the internal wiring connected thereto are not required. Therefore, the relay connector 41a connected to the single solenoid valve 11b can have or can not have the second substrate side connecting portion B and the internal wiring connected thereto.

[0058] As shown in Figure 8 and Figure 9 As shown in (A) and (B) of FIG. 10, the internal wiring structure of the relay connector 41 differs between the positive common type 41a and the negative common type 41b. By preparing two different internal wiring structures, the resin-made portions of the two relay connectors 41a, 41b can be shared, so that one resin molding die can be used to manufacture the two relay connectors 41a, 41b.

[0059] As shown in Figure 8 (A) of FIG. 10,Figure 9 The double-wire base plate assembly 42a of the double solenoid valve 11a has a first output terminal SOLa connected to the first base plate side connection part A of the relay connector 41a, 41b, a second output terminal SOLb connected to the second base plate side connection part B, and a third output terminal SOLc as a common output terminal connected to the common base plate side connection part COM, as shown in (A) of FIG. 6.

[0060] As shown in (B) of FIG. 6, Figure 8 As shown in (B) of FIG. 6, Figure 9 The single-wire base plate assembly 42b of the single solenoid valve 11b has a first output terminal SOLa connected to the first base plate side connection part A of the relay connector 41a, 41b, and a second output terminal SOLc as a common output terminal connected to the common base plate side connection part COM, as shown in (B) of FIG. 7.

[0061] The plurality of input terminals IN1 to INn are arranged in a straight line at a certain interval on the base plate 43, and the common connection terminal INc is arranged adjacent to the nth input terminal INn on the base plate 43. The number n of the input terminals is set in accordance with the maximum number of the solenoid valves 11 constituting one group of manifold solenoid valves 10. One side of each of the base plate assemblies 42a, 42b is the base plate connector 44, and the plurality of connection terminals OUT1 to OUTn are arranged in a straight line at a certain interval on the base plate connector 44, and the common connection terminal OUTc is arranged adjacent to the nth connection terminal OUTn on the base plate connector 44. The number n of the connection terminals is the same as the number of the input terminals.

[0062] In the base plate assembly 42a of the double solenoid valve 11a, the first output terminal SOLa is connected to the first input terminal IN1 through an output wire 46a, and the input terminal IN1 is connected to the first base plate side connection part A. The second output terminal SOLb is connected to the second input terminal IN2 through an output wire 46b, and the input terminal IN2 is connected to the second base plate side connection part B. The common output terminal SOLc is connected to the common input terminal INc and the common connection terminal OUTc through a common connection wire 46c in dotted line. The first to n-2 connection terminals OUT1 to OUTn-2 are respectively connected to the third and subsequent input terminals IN3 to INn through connection wires 46d.

[0063] On the other hand, in the substrate assembly 42b of the single solenoid valve 11b, the first output terminal SOLa is connected to the first input terminal IN1 via output wiring 46a, and the input terminal IN1 is connected to the first substrate-side connection portion A. The common output terminal SOLc is connected to the common input terminal INc and the common connection terminal OUTc via the dashed common connection wiring 46c. The first to the (n-1)th connection terminals OUT1 to OUTn-1 are respectively connected to the second and subsequent input terminals IN2 to INn via connection wiring 46d. The connection terminals of each substrate assembly 42a and 42b are in contact with the input terminals of the adjacent other substrate assemblies. Thus, the wiring patterns of substrate assemblies 42a and 42b are different.

[0064] like Figure 5 As shown, the relay connector 41 has a connector body 51, which has solenoid-side connecting portions 1 to 4 for connection with solenoid terminals. Base plate-side connecting portions A, B, and COM are located on the opposite side of the solenoid-side connecting portions 1 to 4 and are disposed on the base 52 of the connector body 51. The base 52 of the relay connector 41 is mounted in a mounting hole 53 provided in the valve seat body 20.

[0065] like Figure 5 and Figure 7 As shown, an end wall portion 54 is provided on the back side of the valve seat body 20. A through hole 55 is formed in the end wall portion 54, penetrating the end wall portion 54 and communicating with the outside of the valve seat body 20 through the connector housing portion 37. A locking recess 56 is formed in the valve seat body 20 opposite to the through hole 55. The relay connector 41 has an exposed claw 57 that inserts into the through hole 55 and a locking claw 58 that engages with the locking recess 56. Therefore, when the relay connector 41 is inserted into the connector housing portion 37 and the base 52 is installed in the mounting hole 53, the exposed claw 57 enters the through hole 55, and the locking claw 58 engages with the locking recess 56. This prevents the relay connector 41 from falling out of the connector housing portion 37, and the exposed claw 57, as part of the relay connector 41, protrudes from the through hole 55 to the outside.

[0066] As described above, the solenoid valve 11 constituting the manifold solenoid valve 10 has two specifications: a double solenoid valve 11a and a single solenoid valve 11b. The wiring specifications of the manifold solenoid valve 10 include positive common type and negative common type. In addition, solenoid valves and manifold solenoid valves also have specifications such as waterproof and explosion-proof. The shape of the relay connector 41 sometimes varies depending on the specifications. By differentiating at least the shape, pattern, and color of the portion of the relay connector 41 exposed from the through hole 55 according to the specifications, the specifications of the solenoid valve 11 or the manifold solenoid valve 10 can be determined.

[0067] The relay connector 41 has a positive common type relay connector 41a and a negative common type relay connector 41b. The substrate assembly 42 has a double-wiring substrate assembly 42a and a single-wiring substrate assembly 42b. By combining either of the two relay connectors 41a, 41b with either of the two substrate assemblies 42a, 42b, as shown in Table 1, the valve seat 15 is set to any one of four specifications of a positive common type double solenoid valve, a positive common type single solenoid valve, a negative common type double solenoid valve, and a negative common type single solenoid valve.

[0068] [Table 1]

[0069]

[0070]

[0071] As described above, in order to display to the outside which one of the four specifications the solenoid valve 11 constituting the manifold solenoid valve 10 is, the positive common type relay connector 41a connected to the double-wiring substrate assembly 42a is colored green, and the positive common type relay connector 41a connected to the single-wiring substrate assembly 42b is colored blue. Further, the negative common type relay connector 41b connected to the double-wiring substrate assembly 42a is colored gray, and the negative common type relay connector 41b connected to the single-wiring substrate assembly 42b is colored pink.

[0072] The relay connectors 41 classified into four specifications by color are colored by pigments contained in resin materials at the time of resin molding of each. As described above, by sharing the resin-made parts of the two relay connectors 41a, 41b, one resin molding mold can be used to manufacture the two relay connectors 41a, 41b representing four specifications of the relay connectors 41, and thus the manufacturing efficiency of the relay connectors can be improved.

[0073] Further, since the specifications of the valve seat 15 are displayed by the relay connectors 41, it is not necessary to provide marks or characters or the like on the valve seat indicating the molds corresponding to the respective specifications, and one molding mold can be used to manufacture the valve seat. Thus, the manufacturing efficiency of the valve seat is improved, and the assembly efficiency of the manifold solenoid valve 10 is improved. The specifications displayed by the relay connectors 41 are not limited to the number of solenoids of the solenoid valve 11, the wiring specifications of the manifold solenoid valve 10. For example, the shape, function, performance, parts used, corresponding specifications, or the like of the manifold solenoid valve 10 or the mountable solenoid valve 11 can be displayed.

[0074] Since the portion exposed to the through-hole 55, that is, the exposed claw 57 can be visually confirmed from the outside via the through-hole 55, the specification of the electromagnetic valve 11, the wiring specification of the manifold electromagnetic valve 10 can be identified from the outside according to the color of the exposed claw 57. Further, when the manifold electromagnetic valve 10 is assembled, it is necessary to distinguish the type of the relay connector 41 mounted to the valve seat 15 according to the type of the electromagnetic valve 11, but the type can be distinguished according to the color, so that the assembly efficiency can be improved.

[0075] As shown in Figure 5 , the exposed claw 57 is one, and as for the engagement claw 58, two engagement claws 58 having a smaller width dimension than the exposed claw 57 are formed. In addition, the width dimension of the engagement claw 58 is smaller than the width dimension of the through-hole 55, so the engagement claw 58 does not engage with the through-hole 55. In this way, if the shapes of the exposed claw 57 and the engagement claw 58 are different from each other, when the relay connector 41 is mounted to the valve seat 15, it is possible to prevent the relay connector 41 from being erroneously mounted with respect to the valve seat 15, so that the mounting workability is improved.

[0076] As shown in Figure 4 and Figure 5 , the through-hole 55 has an outer engagement surface 55a that engages with the front end surface of the exposed claw 57, and the engagement recess 56 has an inner engagement surface 56a that engages with the front end surface of the engagement claw 58. As shown in Figure 5 , the length LI from the surface of the valve seat body 20, to which the base 52 of the relay connector 41 abuts, to the outer engagement surface 55a is set to be smaller than the length L2 to the inner engagement surface 56a. In this way, in the outer engagement surface 55a and the inner engagement surface 56a, the engagement positions of the relay connector 41 are different, so it is possible to prevent erroneous mounting of the relay connector 41 with respect to the valve seat 15.

[0077] As shown in Figure 5 and Figure 6 , one side surface of the valve seat 15 is a substrate insertion surface 15a, and the substrate assembly 42 is inserted into the substrate mounting hole 38 from the substrate insertion surface 15a side. The side surface of the substrate 43 is linearly provided with a plurality of input terminals at a certain interval, and the input terminals are provided on both surfaces of the substrate 43. In Figure 5 and Figure 6 , one of the plurality of input terminals provided on both surfaces of the substrate 43 is denoted by reference numeral IN.

[0078] The substrate connector 44 mounted to the other side surface side of the substrate 43 has a slit 60 into which the substrate 43 of the adjacent other substrate assembly 42 is inserted, and the inner surface of the slit 60 is linearly provided with a plurality of connection terminals at a certain interval. In Figure 5 and Figure 6In the drawing, a reference numeral OUT is attached to one of the plurality of input terminals provided to the inner surface of the slit 60. When the substrate 43 of the other substrate assembly 42 is inserted into the substrate connector 44 of one substrate assembly 42, each input terminal IN provided to the substrate 43 of the other substrate assembly 42 is connected to each connection terminal OUT of one substrate assembly 42.

[0079] Figure 10 (A) is a plan view showing a state in which two substrate assemblies 42 are combined. The substrate connector 44 of one substrate assembly 42 is provided with a plurality of connection terminals OUT in a manner that the connection terminals OUT are exposed to the slit 60, and the substrate 43 is provided with input terminals IN on both surfaces of the substrate 43, the input terminals IN being connected to the connection terminals OUT through the connection wiring 46d. Therefore, when the substrate 43 of the other substrate assembly 42 is inserted into the slit 60 of the substrate connector 44 of one substrate assembly 42, the connection terminals OUT are connected to the input terminals IN.

[0080] Further, the input terminals IN and the common input terminal INc can be provided to the substrate connector 44, and the connection terminals OUT and the common connection terminal OUTc can be provided to the substrate 43.

[0081] The first output terminal SOLa, the second output terminal SOLb, and the third output terminal SOLc are provided to the end portion of the substrate 43. As shown in FIG. 6, a first output pin 61, a second output pin 62, and a third output pin 63 connected to the conductors of the respective output terminals are mounted to the back surface side of the substrate 43. Each of the output pins 61 to 63 protrudes from the back surface of the substrate 43, has an L shape having an insertion portion 61a to 63a extending in parallel with the substrate 43 in the width direction of the substrate assembly 42, and constitutes an output terminal. Figure 11

[0082] Figure 5 Figure 6 As shown in FIG. 6, a pin support portion 64 is provided to the valve seat main body 20, and three pin insertion holes 65 are provided to the pin support portion 64 corresponding to the three output pins 61 to 63. Therefore, when the substrate assembly 42 is mounted to the substrate mounting hole 38, each of the output pins 61 to 63 is inserted into the pin insertion hole 65.

[0083] Figure 7 ​​​This refers to one side 15b of the valve seat 15, which is the side opposite to the substrate insertion surface 15a. One end of the lead 66 is mounted to each pin insertion hole 65 from the side opposite to the pin insertion hole 65, and the other end of the lead 66 is mounted to the substrate-side connection portion of the relay connector 41. Thus, the output pin 61, which serves as the first output terminal, is connected to the first substrate-side connection portion A of the relay connector 41, the output pin 62, which serves as the second output terminal, is connected to the second substrate-side connection portion B, and the output pin 63, which serves as the third output terminal, is connected to the third substrate-side connection portion COM.

[0084] The base plate assembly 42b of the single solenoid valve 11b can be in a form without the output pin 62, or the output pin 62 can be set virtually.

[0085] Figure 12 (A) indicates the side 15b of valve seat 15. Figure 12 (B) is Figure 12 (A) is a cross-sectional view along line 12B-12B. When the substrate assembly 42 is mounted in the substrate mounting hole 38, as shown... Figure 12 As shown in (B), the connecting terminal portion provided on the side of the substrate 43 protrudes from the side 15b of the valve seat 15. The side of the substrate connector 44 is substantially flush with the substrate insertion surface 15a of the valve seat 15 and is exposed to the outside. When the sides of the valve seats 15 on which the substrate assemblies 42 are respectively mounted are mated together, the substrate 43 of the other substrate assemblies is inserted into the slit 60 of one of the substrate connectors 44.

[0086] like Figure 5 and Figure 13 As shown, the surface of the substrate connector 44 is provided with multiple engaging protrusions 72a to 72c. Engaging protrusions 72a and 72c are linearly symmetrical L-shaped, while engaging protrusion 72b is T-shaped. (The text repeats itself here.) Figure 6 As shown, engaging protrusions 72a to 72c are also provided on the back of the substrate connector 44. (As shown...) Figure 5 As shown, the valve seat body 20 is provided with engaging claws 73, which engage with engaging protrusions 72a and 72c when the base plate assembly 42 is installed in the base plate mounting hole 38. By engaging the engaging claws 73 with the engaging protrusions 72a and 72c, the base plate assembly 42 is positioned and fixed in a predetermined position on the valve seat body 20.

[0087] like Figure 11 and Figure 13As shown, a substrate connector support surface 71 is provided on the valve seat 15, and a base contact surface 76 is provided on the engaging protrusions 72a to 72c. When the substrate assembly 42 is installed in the substrate mounting hole 38, the base contact surface 76 abuts against the substrate connector support surface 71 and is supported thereunder, and the substrate assembly 42 is positioned at a predetermined position on the valve seat body 20. In this way, the substrate assembly 42 is supported by the substrate connector 44 abutting against the valve seat 15.

[0088] like Figure 13 As shown, multiple protrusions 74a and 74b protrude from the side 15b and are provided on the valve seat body 20. The protrusion 74a is a quadrilateral protrusion, and the protrusion 74b is an L-shaped protrusion. On the valve seat body 20, corresponding to each protrusion 74a and 74b, a recess 75 is provided with an opening in the substrate insertion surface 15a for insertion of the protrusion 74 of the adjacent substrate assembly 42. In addition, the shape of the protrusion 74b corresponds to the shape of the engaging protrusion 72b and is inserted between the engaging protrusion 72b and the engaging claw 73. Thus, when the multiple valve seats 15 are mated by side contact, the adjacent valve seats 15 are in a state of protrusion engagement 74, and the adjacent valve seats 15 are combined with each other in a predetermined positional relationship.

[0089] This invention is not limited to the above-described embodiments, and various modifications can be made without departing from its spirit. The solenoid valve 11 may also be a direct-operation type, where the valve core is directly driven by a solenoid, rather than an indirect-operation type that uses a pilot solenoid valve to control pilot gas to drive the main valve shaft. Alternatively, a shut-off valve for stopping the supply of air to the individual solenoid valve 11, an air supply block for directly supplying air to the solenoid valve 11 individually, and an exhaust block for independently discharging air from the solenoid valve 11 may be provided between the solenoid valve 11 and the valve seat 15, thereby mounting the solenoid valve 11 on the valve seat in a manner that does not abut against the valve seat 15. Furthermore, the valve seat 15 may not be equipped with the solenoid valve 11, but instead with a plate that seals the supply connection hole 26, the output connection holes 27a, 27b, and the exhaust connection holes 28a, 28b.

[0090] Industrial availability

[0091] Manifold solenoid valves, equipped with valve seats, are used in the field of pneumatic working equipment to control the supply of compressed air to the pneumatic working equipment.

Claims

1. A manifold solenoid valve, comprising at least one solenoid valve unit, said solenoid valve unit including a solenoid valve having at least one solenoid and valve seats respectively mounting the solenoid valve, wherein, The manifold solenoid valve has the following features: The base plate assembly is provided with multiple output terminals and multiple input terminals respectively connected to the output terminals via output wiring, and is mounted on the valve seat; A relay connector is provided with a solenoid-side connection portion that connects to the terminals of the solenoid and a base plate-side connection portion that connects to the output terminals, and is mounted on the valve seat; and A through hole is provided in the valve seat so that a portion of the relay connector mounted on the valve seat protrudes to the outside of the manifold solenoid valve. The valve seat has a substrate insertion surface, a side surface opposite to the substrate insertion surface, a solenoid valve mounting surface, and an end wall portion intersecting the substrate insertion surface, the side surface, and the solenoid valve mounting surface. A substrate mounting hole is formed in the valve seat, the substrate mounting hole extending through the substrate insertion surface and the side surface, and the substrate assembly is mounted in the substrate mounting hole. The through hole is provided in the end wall portion and penetrates through the end wall portion. In the relay connector, either the first relay connector or the second relay connector is mounted on the valve seat. The first relay connector is a positive common type relay connector in which at least one solenoid terminal on the positive side of the solenoid is connected to a common connection portion. The second relay connector is a negative common type relay connector in which at least one solenoid terminal on the negative side of the solenoid is connected to a common connection portion.

2. The manifold solenoid valve according to claim 1, wherein, In the relay connector, the shape, pattern, or color of at least the portion of the relay connector exposed in the through hole varies depending on the specifications of the valve seat or the specifications of the solenoid valve that can be mounted on the valve seat.

3. The manifold solenoid valve according to claim 2, wherein, In the relay connector, the color of at least the portion of the relay connector exposed through the through hole varies depending on the specifications of the valve seat or the specifications of the solenoid valve that can be mounted on the valve seat.

4. The manifold solenoid valve according to claim 1, wherein, The first relay connector and the second relay connector are either either a relay connector for connecting to a dual solenoid valve or a relay connector for connecting to a single solenoid valve. The relay connector connected to the dual solenoid valve is equipped with: The first substrate side connection portion is connected to a solenoid terminal of the first solenoid of the double solenoid valve, which is provided with a first solenoid and a second solenoid. The second substrate side connection portion is connected to a solenoid terminal of the second solenoid; and The common connection portion is connected to another solenoid terminal of each of the first and second solenoids. The relay connector connected to the single solenoid valve is equipped with: The first substrate side connection portion is connected to a solenoid terminal of a single solenoid valve equipped with a single solenoid; and The shared connection is connected to another solenoid terminal.

5. The manifold solenoid valve according to claim 4, wherein, In the first relay connector connected to the dual solenoid valve, the first relay connector connected to the single solenoid valve, the second relay connector connected to the dual solenoid valve, and the second relay connector connected to the single solenoid valve, at least the portion exposed in the through hole has a different color.

6. A valve seat, each mounting a solenoid valve having at least one solenoid, and the solenoid valves being connected to each other to form a manifold solenoid valve, wherein... The valve seat has: The valve seat body has a solenoid valve mounting surface, a connector housing portion that opens on the solenoid valve mounting surface, and a substrate mounting hole that extends through the width direction. The substrate assembly is provided with multiple output terminals and multiple input terminals respectively connected to the output terminals through output wiring, and is mounted in the substrate mounting holes; The relay connector is provided with a solenoid-side connection portion that connects to the solenoid terminal and a base plate-side connection portion that connects to the output terminal, and is installed in the connector storage portion. as well as A through hole, communicating with the connector housing, is provided in the valve seat body, allowing a portion of the relay connector mounted in the connector housing to protrude to the outside of the manifold solenoid valve. The valve seat body has a substrate insertion surface, a side surface opposite to the substrate insertion surface, a solenoid valve mounting surface, and an end wall portion intersecting the substrate insertion surface, the side surface, and the solenoid valve mounting surface. A substrate mounting hole is formed in the valve seat body, the substrate mounting hole passing through the substrate insertion surface and the side surface, and the substrate assembly is mounted in the substrate mounting hole. The through hole is provided in the end wall portion and penetrates through the end wall portion. In the relay connector, either the first relay connector or the second relay connector is mounted on the valve seat. The first relay connector is a positive common type relay connector in which at least one solenoid terminal on the positive side of the solenoid is connected to a common connection portion. The second relay connector is a negative common type relay connector in which at least one solenoid terminal on the negative side of the solenoid is connected to a common connection portion.

7. The valve seat according to claim 6, wherein, In the relay connector, the shape, pattern, or color of at least the portion of the relay connector exposed in the through hole varies depending on the specifications of the valve seat or the specifications of the solenoid valve that can be mounted on the valve seat.

8. The valve seat according to claim 7, wherein, The color of at least the portion of the relay connector exposed through the through hole varies depending on the internal wiring structure of the relay connector.

9. The valve seat according to claim 7, wherein, The color of at least the portion of the relay connector exposed in the through hole varies depending on the wiring pattern of the substrate assembly.

10. The valve seat according to any one of claims 6 to 9, wherein, The relay connector has a locking claw and an exposed claw. The locking claw is inserted into the locking recess of the valve seat, and the exposed claw is inserted into the through hole, which can be visually confirmed from the outside through the through hole.

11. The valve seat according to claim 10, wherein, The exposed claw and the engaging claw have different shapes.

12. The valve seat according to claim 10 or 11, wherein, The width of the engaging claw is smaller than the width of the through hole.

13. The valve seat according to any one of claims 10 to 12, wherein, The through hole has an outer engagement surface that engages with the exposed claw, and the engagement recess has an inner engagement surface for the engagement claw to engage. The engagement positions of the relay connector are different on the outer engagement surface and the inner engagement surface.

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