Armature device and valve device

Abstract

The invention provides a technology for reducing the number of components when a plurality of stepping motors are used. The armature device according to the present embodiment is provided with: a plurality of armature packages in which an armature fitted to the outside of a rotor housing of a stepping motor is covered with a resin member; a common base which is made of resin and is used for fixing the plurality of armature packaging bodies together; a connector part having one cover part integrally formed on the common base and a plurality of connector terminals at least partially accommodated in the cover part; and a relay circuit which covers both or one of the common base and the resin member of the armature package, and which connects the plurality of connector terminals and the respective armatures.

Description

Technical Field

[0001] The present disclosure relates to an armature device including an armature package in which an armature fitted into a rotor case of a stepping motor is covered with a waterproof resin member, and a valve device in which a valve with a rotor is incorporated into such an armature device. Background Art

[0002] In recent years, as electrical products have become more advanced in performance and functionality, devices equipped with multiple stepping motors have become commonplace (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2010-11624 (paragraph 0032) Summary of the Invention

[0006] Problems to be solved by the invention

[0007] However, in the conventional technology, the increase in the number of components as the number of stepping motors increases increases the management cost of the components. Therefore, the present application provides a technology for reducing the number of components when using multiple stepping motors.

[0008] Means for solving problems

[0009] One solution of the invention completed to solve the above-mentioned problems is an armature device comprising: a plurality of armature packages, which use a resin component to cover the armature embedded in the outer side of the rotor housing of the stepping motor; a common base made of resin, which fixes the plurality of armature packages together; a connector portion, which has a cover portion integrally formed on the common base and a plurality of connector terminals at least partially accommodated in the cover portion; and a relay circuit, which is covered by both or one of the common base and the resin component of the armature package and connects the plurality of connector terminals and each of the armatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a perspective view of the valve device according to the first embodiment.

[0011] Figure 2 It is a side cross-sectional view of the valve with rotor.

[0012] Figure 3 is a side sectional view of the valve device.

[0013] Figure 4 It is a three-dimensional diagram of the common base.

[0014] Figure 5 This is a perspective view of the terminal block unit.

[0015] Figure 6 This is a perspective view of the terminal block unit.

[0016] Figure 7 It is an enlarged perspective view of a portion of the common base.

[0017] Figure 8 It is a top sectional view of the armature assembly.

[0018] Figure 9 It is a top sectional view of the armature assembly.

[0019] Figure 10 It is the circuit diagram of the armature unit.

[0020] Figure 11 It is a perspective view of a terminal group unit according to the second embodiment.

[0021] Figure 12 It is an enlarged perspective view of a portion of the common base.

[0022] Figure 13 This is a perspective view of a common base according to a third embodiment.

[0023] Figure 14 It is a three-dimensional diagram of the common base.

[0024] Figure 15 It is a perspective view of a valve device according to a fourth embodiment.

[0025] exist Figure 16 middle, Figure 16 A is a perspective view of a common base of the fifth embodiment. Figure 16 B is a perspective view of a circuit board according to the fifth embodiment.

[0026] Figure 17 It is a top sectional view of the common base. DETAILED DESCRIPTION

[0027] [First embodiment]

[0028] Reference Figures 1 to 10 A first embodiment of the valve device 12A will be described. Figure 1 As shown in FIG. 1 , the valve device 12A is formed by assembling the armature device 10A and a plurality of valves 11 with rotors. Figure 1 、 Figure 2 The upper side and the lower side in the figure are simply referred to as “upper side and lower side”, etc. First, the valve 11 with a rotor is described.

[0029] like Figure 2 As shown, the valve 11 with a rotor is composed of a base member 13 and a valve body 20. The base member 13 is, for example, in the shape of a rectangular parallelepiped (see Figure 1), comprising a vertical hole 14 extending from the upper surface of a base member 13 to a midway position in the vertical direction, and a first horizontal hole 15 and a second horizontal hole 16 extending from the lower end and a position near the lower end of the vertical hole 14 to the side surface of the base member 13, respectively. Furthermore, a valve seat member 17 is press-fitted into the portion of the vertical hole 14 between the connection with the first horizontal hole 15 and the connection with the second horizontal hole 16, and a valve hole 18 extends through the center of the valve seat member 17.

[0030] It should be noted that the base member 13 is not limited to a rectangular parallelepiped shape, and may also be a cylindrical shape, for example. Furthermore, the vertical hole 14 formed in the base member 13 is not limited to extending from the upper surface of the base member 13 to a position midway in the vertical direction. For example, it may also extend through the bottom, with the through hole serving as the third horizontal hole. Furthermore, the valve seat member 17 is a separate member from the base member 13, but may also be integral with the base member 13, for example. It should be noted that the material of the valve seat member 17 is preferably a hard metal such as stainless steel.

[0031] The valve core support member 24 included in the valve body 20 is inserted into the upper part of the vertical hole 14. The valve core support member 24 is formed by fitting together multiple cylindrical components, and its outer diameter gradually decreases toward the bottom. In addition, an O-ring groove 21 for accommodating an O-ring 21R is provided at the upper end of the outer peripheral surface of the valve core support member 24, and a threaded portion 23 is formed near the lower end. Furthermore, first to third steps 22D1, 22D2, and 22D3 are formed between the O-ring groove 21 and the threaded portion 23 on the outer peripheral surface of the valve core support member 24, and an O-ring 22R is fitted between the second and third steps 22D2 and 22D3. Furthermore, the threaded portion 23 is screwed into the threaded portion 14N of the vertical hole 14, with the first step 22D1 abutting against the upper surface of the base member 13, and the O-ring 22R in close contact with the inner surface of the vertical hole 14.

[0032] A center hole 24A is formed in the center of the valve core support member 24, through which a valve core 29 (described later) is inserted. An annular groove 24B is formed on the upper surface of the valve core support member 24, concentric with the center hole 24A. The annular groove 24B is a recessed portion for connection to the rotor housing 25. The lower end of the cylindrical rotor housing 25 engages with the annular groove 24B, for example, by welding or brazing. A cover 26 is welded or brazed to the upper end of the rotor housing 25, for example. Furthermore, a rotor 27 is provided within the rotor housing 25.

[0033] It should be noted that the valve core support member 24 is not limited to a structure in which all of the first to third steps 22D1, 22D2, and 22D3 abut against the base member 13 for positioning. Alternatively, at least one step abuts against the base member 13 for positioning. For example, as long as it does not interfere with the threaded portions 14N and 23, the third step 22D3 may abut against the base member for positioning. Furthermore, the valve core support member 24 and the base member 13 may be secured by structures other than the threaded portions 14N and 23 being threaded together. Furthermore, in the above embodiment, the O-rings 21R and 22R are positioned only above the threaded portions 14N and 23, but this is not limiting. They may be positioned only below or both above and below the threaded portions 14N and 23. Furthermore, spacers may be used in place of the O-rings 21R and 22R, or the O-rings 21R and 22R may be omitted depending on the securing method. In this embodiment, the rotor housing 25 is fixed to the valve core support member 24 by welding or brazing. However, as long as sealing and strength are ensured, the rotor housing 25 may be fixed to the valve core support member 24 by screws or adhesive, for example. Furthermore, the rotor housing 25 is provided with a cover 26, but a structure without the cover 26 and with an open top end is also possible.

[0034] Rotor 27 is, for example, a magnetic rotor having multiple south and north poles (not shown) on its outer circumference. It has a shaft member 28 extending through the center of a cylindrical body 27W with a bottom. The portion of shaft member 28 that extends downward through cylindrical body 27W is accommodated in center hole 24A. Furthermore, a threaded portion 28N formed on the outer surface of the lower portion of shaft member 28 screws into a threaded portion 24N formed on the inner surface of center hole 24A. It should be noted that the shape of rotor 27 is not limited to a bottomed lower end; for example, it may also have an H-shaped cross section or a bottomed upper end.

[0035] The portion of the shaft member 28 below the midpoint in the axial direction is hollow, and a valve core 29 is fitted inside. A step on the upper portion of the valve core 29 abuts against a step within the shaft member 28, preventing the valve core 29 from falling out of the shaft member 28. Furthermore, a compression coil spring 29A is housed above the valve core 29 within the shaft member 28, and the spring force of this compression coil spring 29A biases the valve core 29 downward. Furthermore, the lower portion of the valve core 29 protrudes downward from the valve core support member 24. As the rotor 27 rotates, the valve core 29 moves vertically along with the rotor 27, approaching and separating from the valve seat member 17. When the valve core 29 reaches the lower end of its movable range, the valve hole 18 is closed. The amount of fluid flow that can pass through the valve hole 18 varies depending on the amount of upward movement from the lower end.

[0036] like Figure 3As shown, the armature device 10A includes an armature 30 that is fitted outside the rotor case 25 and forms a part of the stepping motor 99 together with the rotor 27. The armature 30 has the same structure as a general armature of a claw-pole stepping motor, for example.

[0037] Specifically, the armature 30 comprises a first coil unit 31U and a second coil unit 32U coaxially arranged. The first coil unit 31U has a flat cylindrical yoke 33 covering a bobbin 31B around which the first-phase coil 31 is wound. Similarly to the first coil unit 31U, the second coil unit 32U has a yoke 34 covering a bobbin 32B around which the second-phase coil 32 is wound. On the inner circumference of each yoke 33, 34, a plurality of teeth 33T, 34T are alternately arranged, each bent at right angles from one end face of the yoke 33, 34, and a plurality of teeth 33T, 34T are bent at right angles from the other end face. Furthermore, the inner surfaces of these teeth 33T, 34T, which face the central axis of the yoke 33, 34, are curved into an arc shape and positioned within a cylindrical surface having approximately the same diameter as the outer circumference of the rotor case 25.

[0038] The stepping motor 99 of this embodiment is a claw-pole type, but any type may be used as long as it includes a rotor housing 25. Specifically, for example, it may include a plurality of teeth arranged circumferentially on the stator side, with a coil wound around each tooth.

[0039] A plurality of lead terminals 36 are connected to the terminal ends of the coils 31 and 32. The lead terminals 36 and the armature 30 form an armature package 30P, which is partially covered with a resin member 37. Specifically, the lead terminals 36 are set in a primary mold, and a lead terminal assembly unit is insert-molded, in which the lead terminals 36 are held by a resin retaining member 35. Furthermore, the lead terminal assembly unit, in which the coils 31 and 32 are connected to the lead terminals 36 and the retaining member 35 is held between the yokes 33 and 34, is set in a secondary mold, and the armature package 30P, which is covered with the resin member 37 forming the housing 37H, is insert-molded.

[0040] The shell 37H has: a cylindrical main body portion 40, which covers approximately the entire yoke 33, 34; a cylindrical protrusion portion 38, which extends upward from the inner edge portion of the upper surface of the cylindrical main body portion 40 and has a closed upper end; a circular protrusion portion 41, which protrudes from the inner edge portion of the lower surface of the cylindrical main body portion 40 and has an open lower end; and a box portion 45.

[0041] The inner surface of the cylindrical protrusion 38 is a cylindrical surface flush with the inner surface of the cylindrical main body 40. Furthermore, the inner surfaces of the plurality of teeth 33T and 34T are exposed flush with the inner surface of the cylindrical main body 40. Furthermore, the inner surface of the circular protrusion 41 is slightly larger than the inner surface of the cylindrical main body 40. Furthermore, the rotor housing 25 fits within the inner sides of the cylindrical main body 40 and the cylindrical protrusion 38, and the upper end of the valve core support member 24 fits within the inner side of the circular protrusion 41. The O-ring 21R of the O-ring groove 21 of the valve core support member 24 is in close contact with the inner surface of the circular protrusion 41, thereby achieving waterproofing within the armature package 30P.

[0042] like Figure 1 As shown, the box portion 45 has a flat, box-shaped structure that is open toward the side opposite the cylindrical main body 40. Specifically, the box portion 45 is composed of a bottom wall 44 that is parallel to the central axis of the cylindrical main body 40 and has a quadrilateral shape when viewed from the front, and an annular wall 39 that protrudes from the outer edge of the bottom wall 44 toward the side opposite the cylindrical main body 40. Furthermore, the horizontal center portion of the bottom wall 44 is connected to the cylindrical main body 40 via a central connecting portion 42, and the horizontal ends of the bottom wall 44 are connected to the cylindrical main body 40 via a pair of side connecting portions 43.

[0043] Each side connecting portion 43 is in the form of a protruding piece extending tangentially from the outer circumference of the cylindrical main body 40. Approximately half of its thickness extends laterally from the side surface of the annular wall 39. Furthermore, the tip of the portion of each side connecting portion 43 that extends laterally from the side surface of the annular wall 39 is positioned rearward of the front end of the annular wall 39 on the outer surface of the annular wall 39. Furthermore, a fitting groove 46 is formed on the side surface of each side connecting portion 43, extending from the front end to near the base end. This fitting groove 46 has a dovetail groove structure, with the bottom width of the groove wider than the opening width.

[0044] like Figure 3 As shown, a waterproof chamber 47 is formed inside the box portion 45, and a circuit board 48 is housed therein. In addition, a plurality of lead terminals 36 protrude from the bottom wall 44 through the central connecting portion 42. Furthermore, the plurality of lead terminals 36 pass through the connection holes 48B of the circuit board 48 and are soldered to the circuit mounted on the circuit board 48. That is, the armature 30 is connected to the circuit board 48. In addition, the circuit board 48 is provided with, for example, a plurality of pillars 44T (see FIG. 4 ) protruding from the bottom wall 44. Figure 8 ) is passed through a through hole (not shown), and the circuit board 48 is fixed to the armature package 30P by thermally caulking the front end portions of the plurality of pillars 44T.

[0045] It should be noted that in order to use the secondary molding die to hold the yokes 33 and 34, as shown in FIG. Figure 1As shown, a plurality of recesses 37U are formed on the upper surface of the housing 37H, and the upper yoke 33 (see FIG. Figure 3 ) is partially exposed, but only a portion of the flat plate portion of the yoke 33 is exposed, so water will not penetrate into the interior from this point.

[0046] Figure 4 , a common base 50A to which a plurality of armature packages 30P are fixed is shown. The common base 50A is, for example, in the form of a strip extending in the transverse direction, and a plurality of waterproof chambers 51 are arranged at equal intervals in the transverse direction (length direction) on the back side thereof. The front shape of each waterproof chamber 51 is a quadrilateral that is slightly smaller than the front shape of the waterproof chamber 47, and the opening edge surrounding each waterproof chamber 51 on the back side of the common base 50A serves as a package fixing portion 50P. Furthermore, the front end face of the annular wall 39 of each armature package 30P is fixed in a state overlapping with the package fixing portion 50P (see FIG. 1 ). Figure 1 ).

[0047] It should be noted that the fixing structure of the armature package 30P and the common base 50A can be welding such as heat welding or vibration welding, or can be adhesively bonded using an adhesive material. In addition, a sealing member can be added to the contact surface of the armature package 30P and the common base 50A and fixed by screw fastening.

[0048] like Figure 4 As shown, positioning protrusions 52 protrude from the back surface of the common base 50A between adjacent waterproof chambers 51. The two sides of each positioning protrusion 52 form sliding engagement portions 53 having a cross-sectional shape corresponding to the engagement grooves 46 of the armature package 30P. Specifically, the positioning protrusions 52 are configured as follows: a vertically flat protrusion having a pair of triangular protrusions 53A extending gradually upward from its upper surface, near its widthwise ends, and a pair of triangular protrusions 53B extending gradually downward from its lower surface, near its widthwise ends, with a groove 53C formed between the upper and lower triangular protrusions 53A and 53B. Furthermore, in the armature packages 30P disposed at both ends of the common base 50A in the longitudinal direction, the sliding engagement portions 53 engage with the fitting grooves 46 on one side thereof. In the armature packages 30P disposed midway in the longitudinal direction of the common base 50A, the sliding engagement portions 53 engage with the fitting grooves 46 on both sides thereof. Furthermore, by engaging the sliding engagement portions 53 with the fitting grooves 46, each armature package 30P is positioned so that the entire front end surface of the annular wall 39 overlaps the entire package fixing portion 50P.

[0049] It should be noted that the fitting groove 46 of the above embodiment is a dovetail groove structure, but it can also be a key groove structure, a T-slot structure, etc. In addition, a structure without the fitting groove 46 and the positioning protrusion 52 can also be used. In this case, for example, a structure can be used in which multiple armature packages 30P are fixed to a common base 50A in a connected state. Specifically, Figure 8 Among the multiple armature packages 30P shown, the side connecting portion 43 on the left side is integrally provided with a sliding engaging portion of the same shape as the sliding engaging portion 53, and the interlocking groove 46 of the side connecting portion 43 of the armature package 30P on the left side is engaged with the sliding engaging portion of the side connecting portion 43 of the armature package 30P adjacent to its right and connected.

[0050] A connector portion 54 is provided at one end portion in the longitudinal direction of the front side surface of the common base 50A. Figure 1 and Figure 3 As shown, the connector portion 54 includes a cover portion 55 protruding from the front side of the common base 50A and a plurality of connecting pins 56 protruding from the back of the cover portion 55. Specifically, the cross-sectional shape of the cover portion 55 is, for example, an oblong shape that is long in the vertical direction, and is arranged approximately in the horizontal direction center of the waterproof chamber 51 at one end in the longitudinal direction of the common base 50A. In addition, the plurality of connecting pins 56 extend straight from, for example, the horizontal direction center of the back of the cover portion 55 and are arranged in a row in the vertical direction. In addition, the outer surface of the cover portion 55 is provided with a plurality of protrusions 55T extending in the protruding direction of the cover portion 55, and is provided with a locking protrusion 55A.

[0051] The unillustrated counterpart side connector portion coupled to the connector portion 54 comprises, for example, a connector housing having a counterpart side cover portion engaged with the outside of the cover portion 55 and a core portion engaged with the inside of the cover portion 55; and a plurality of female terminal fittings housed inside the core portion. Furthermore, a plurality of connecting pins 56 are inserted into the core portion from the through-hole at the front end thereof to electrically connect to the plurality of female terminal fittings. Furthermore, an annular sealing member is engaged with the outer side surface of the core portion, and the annular sealing member is in close contact with the inner surface of the cover portion 55, thereby maintaining a watertight state inside the cover portion 55. Furthermore, a slit extending from the front end to a midway position is formed in the counterpart side cover portion, and a locking arm is provided at a position opposite to the slit. Furthermore, the locking arm engages with the latching protrusion 55A, thereby locking the connector portion 54 and the counterpart side connector portion into a coupled state.

[0052] like Figure 5 As shown, the plurality of connection pins 56 are constituted by one end side of a plurality of connector terminals 60 bent into a crank shape, for example, and the other end side of these plurality of connector terminals 60 constitutes a plurality of connectors 57 protruding into the waterproof chamber 51 on the back side of the cover portion 55 .

[0053] Specifically, the connector terminal 60 comprises a central straight portion 60A; a connecting pin 56 that bends at a right angle from one end of the central straight portion 60A and extends in a straight line; and a connecting piece 57 that bends at a right angle from the other end of the central straight portion 60A and extends toward the side opposite the connecting pin 56. The central straight portion 60A is, for example, a rod-shaped structure with the same cross-sectional shape as the connecting pin 56. The connecting piece 57 comprises a neck portion 57A, a support plate portion 57B, and a connecting portion 57C arranged in this order from the central straight portion 60A side. The neck portion 57A has the same cross-sectional shape as the connecting pin 56, the support plate portion 57B is a plate-shaped structure whose width increases in a stepped manner from the neck portion 57A, and the connecting portion 57C has a diamond-shaped frame structure (in other words, a pantograph structure) and extends toward the side opposite the neck portion 57A.

[0054] The plurality of connector terminals 60 are arranged parallel to each other and at equal intervals in the vertical direction. The entire central linear portion 60A of each connector terminal 60 and the base ends of the connecting pins 56 and connectors 57 are embedded in the common base 50A. Furthermore, the plurality of connecting pins 56 are arranged vertically so as to protrude from approximately the center of the rear surface of the cover 55 in the horizontal direction, as described above.

[0055] On the other hand, Figure 4 As shown, a plurality of connectors 57 are arranged vertically at the end of the inner side of the waterproof chamber 51 on the back side of the cover 55, which is away from the adjacent waterproof chamber 51. A portion of the support plate 57B and the connector 57C protrude from the inner side of the waterproof chamber 51. In addition, a plurality of connection holes 48A (see FIG. 4A ) are arranged along the side of one end in the lateral direction of the circuit substrate 48. Figure 8 ) are inserted with multiple connecting parts 57.

[0056] In detail, Figure 10 As shown, the circuits of each circuit board 48 include a pair of signal lines 48X, a pair of power lines 48Y, two pairs of signal connection holes 48A that terminate the pair of signal lines 48X, and two pairs of power connection holes 48A that terminate the pair of power lines 48Y. Specifically, the inner surface of each connection hole 48A is covered with a conductor, and these conductors are electrically connected to the signal lines 48X or the power lines 48Y.

[0057] In addition, the circuit board 48 has a pair of signal connection holes 48A and a pair of power connection holes 48A arranged in a certain order on the edges of the two opposing sides thereof. Figure 10 As shown, the plurality of connector terminals 60 include a pair of signal connector terminals 60X connected to the pair of signal connection holes 48A and a pair of power connector terminals 60Y connected to the pair of power connection holes 48A.

[0058] Adjacent circuit boards 48 are connected via four relay terminals 62. These four relay terminals 62 include a pair of signal relay terminals 62X connected to the pair of signal connection holes 48A and a pair of power relay terminals 62Y connected to the pair of power connection holes 48A.

[0059] Specifically, if Figure 6 As shown, each relay terminal 62 has a pair of connectors 58 bent at right angles in the same direction from both ends of a central straight portion 62A extending in a straight line in the horizontal direction. The connector 58 has the same shape as the connector 57 of the connector terminal 60. Figure 7 As shown, with the four relay terminals 62 arranged parallel to each other and at equal intervals in the vertical direction, the entire central straight portion 62A and the base end of the connector 58 are buried in the common base 50A, and the multiple connectors 58 at one end and the multiple connectors 58 at the other end are arranged vertically at the ends of the adjacent waterproof chambers 51 on the side close to each other, and protrude from the inside of the waterproof chambers 51.

[0060] Furthermore, the connectors 58 at both ends of each of the four relay terminals 62 disposed between adjacent waterproof chambers 51 are inserted into the plurality of connection holes 48A (see FIG. Figure 8 ). Therefore, if Figure 10 As shown, a pair of signal lines 48X of all circuit boards 48 are connected to a pair of signal connector terminals 60X, and a pair of power lines 48Y of all circuit boards 48 are connected to a pair of power connector terminals 60Y.

[0061] It should be noted that in Figure 4 In the embodiment, the arrangement of the connectors 57 or 58 at the left end of each waterproof chamber 51 is identical, and the arrangement of the connectors 58 at the right end of each waterproof chamber 51 is identical. Furthermore, the arrangement of the connection holes 48A is also identical among the multiple circuit boards 48. This allows any armature package 30P to be fixed to any package fixing portion 50P.

[0062] In addition, if Figure 4 As shown, a connecting hole 66C is formed in the common base 50A, and the connecting hole 66C connects all the waterproof chambers 51 in a manner that makes the pressure the same. Specifically, the connecting hole 66C is formed by a tube 66 buried in the common base 50A together with the relay terminal 62. Figure 6 As shown in FIG. 6 , the tube 66 is formed by bending both ends of the tube extending in the transverse direction at right angles to the same direction. Figure 7As shown, for example, tube 66 is arranged below multiple relay terminals 62, parallel to the relay terminals 62, and embedded in the common base 50A. A middle portion 66A and a portion of the distal ends 66B of tube 66 are embedded in the common base 50A, leaving the distal ends 66B protruding from the interior of the waterproof chamber 51. Consequently, the inner portion of tube 66 serves as a communication hole 66C, connecting adjacent waterproof chambers 51 to each other, ensuring that all waterproof chambers 51 are connected at the same pressure.

[0063] Specifically, a plurality of relay terminals 62 and tubes 66 are arranged in parallel in a primary molding die, and insert molding is performed using Figure 6 The resin fixing member 63 shown in FIG. 6A holds the terminal group unit 63A of their structure. The fixing member 63 is in the shape of a prism extending in the vertical direction and is formed so that the central straight portion 62A of the plurality of relay terminals 62 is perpendicular to the tube 66A of the tube 66. Figure 5 As shown, a plurality of connector terminals 60 are also set in the primary molding die, and a terminal group unit 61A is insert-molded with a resin fixing member 61 to maintain their structure. Then, the terminal group unit 61A and a plurality of terminal group units 63A are set in the secondary molding die to form the common base 50A. At this time, a vent hole 65 (see FIG. 1 ) is formed in the common base 50A to penetrate between the cover portion 55 and the inner surface of the waterproof chamber 51. Figure 3 ).

[0064] It should be noted that the multiple connector terminals 60 of the terminal group unit 61A are not limited to being bent into a crank shape, and can also extend in a straight line, for example, with a fixing member 61 provided midway in the longitudinal direction. In addition, the connectors 57 and 58 of the terminal group unit 61A and the multiple terminal group units 63A have a support plate portion 57B whose width widens in a stepped manner from the neck portion 57A, but can also be configured without the support plate portion 57B.

[0065] exist Figure 10 , the circuits on the circuit board 48, including the pair of signal lines 48X and the pair of power lines 48Y described above, are simplified. The circuits on the circuit board 48 include a drive circuit 70 for exciting the coils 31 and 32 of the armature 30 to drive the stepping motor 99, and a control circuit 73 for controlling the drive circuit 70.

[0066] The drive circuit 70 is connected to the coils 31 and 32 in a monopolar manner, for example, and includes four switches 71A, 71B, 72B, and 72B. Coil 31 is divided into coils 31A and 31B, and coil 32 is divided into coils 32A and 32B. Switches 71A, 71B, 72B, and 72B correspond one-to-one to coils 31A, 31B, 32A, and 32B. The common connection between coils 31A and 31B and the common connection between coils 32A and 32B are connected to power line 48Y. The opposite side of each coil 31A, 31B, 32A, and 32B is connected to power line 48Y via switches 71A, 71B, 72B, and 72B.

[0067] The control circuit 73 includes a CPU 73A and a memory 73B. A pair of signal lines 48X are branched from the control circuit 73, and the CPU 73A receives commands sent via these signal lines 48X as a bus. The memory 73B also stores an identification number for each circuit board 48. Each circuit board 48 then turns on and off switches 71A, 71B, 72B, and 72B in response to commands assigned to its identification number, thereby exciting the coils 31 and 32 of the armature 30 and driving the stepping motor 99.

[0068] The above is an explanation of the structure of this embodiment. Next, the effects of this embodiment will be described. Figure 1 As shown, the armature device 10A and the valve device 12A of this embodiment are configured so that a plurality of armature packages 30P are fixed to a common base 50A. Thus, a plurality of armature packages 30P and a plurality of circuit boards 48 are integrated into a single component. For users of the armature device 10A and the valve device 12A, the number of components is reduced, and component management costs are suppressed. In addition, as Figure 8 As shown, the multiple circuit boards 48 are housed in waterproof chambers 47 and 51 provided for each armature package 30P, achieving waterproofing. This reduces the number of components required for waterproofing. Furthermore, since only one connector 54 is provided on the common base 50A for connecting to the multiple armatures 30, connector connection is facilitated compared to a case where the connector 54 is provided for each of the multiple armatures 30.

[0069] In addition, if Figure 9 As shown, adjacent waterproof chambers 47 and 51 are connected by the communication hole 66C. Therefore, by checking the airtightness of one waterproof chamber 47 and 51, the airtightness of all waterproof chambers 47 and 51 can be checked, making the airtightness inspection efficient. In addition, the vent hole 65 for the confidentiality inspection is opened in the cover portion 55, so the airtightness inspection can also be performed efficiently in this regard.

[0070] Specifically, for example, a suction device (not shown) that can be mated with the cover 55 and maintain the interior of the cover 55 in an airtight state is used to create a negative pressure or pressurized state within the cover 55, and pressure changes are examined. If the pressure remains unchanged even after a predetermined period of time, it is determined that there is no problem with the airtightness of all waterproof chambers 47 and 51. If not, it can be determined that there is a problem with the airtightness of any of the waterproof chambers 47 and 51. Furthermore, since the interior of the cover 55 is sealed airtight by mating with the mating connector, it is not necessary to block the vent 65 within the cover 55 after the inspection is completed.

[0071] Moreover, if Figure 7 As shown, the communication hole 66C is formed by placing the tube 66 in the mold and molding the common base 50A. This prevents the mold for molding the common base 50A from becoming complicated due to the formation of the communication hole 66C. Furthermore, the tube 66 can be placed in the mold for molding the common base 50A while being fixed by the fixing member 63 along with the plurality of relay terminals 62, making it easier to place the tube 66 in the mold.

[0072] In addition, if Figure 8 As shown, when the common base 50A and the armature packages 30P approach each other in the direction of the openings of the waterproof chambers 47 and 51, the positioning protrusions 52 and the fitting grooves 46 engage with each other, two-dimensionally positioning the multiple armature packages 30P relative to the common base 50A. This facilitates securing each armature package 30P to the common base 50A. Furthermore, the positioning protrusions 52 are tab-shaped, protruding from between adjacent package fixing portions 50P in the common base 50A, and the fitting grooves 46 are located on the side surfaces of the armature packages 30P. Therefore, the engagement of the positioning protrusions 52 with the armature assembly 10A strengthens the armature assembly 10A. Furthermore, the fitting grooves 46 and the positioning protrusions 52 have a dovetail groove structure and a corresponding cross-sectional shape, thereby enhancing the connection strength between the armature package 30P and the common base 50A, and thus the strength of the armature assembly 10A.

[0073] Furthermore, the plurality of connector terminals 60 within the cover portion 55 are comprised of a pair of signal connector terminals 60X and a pair of power connector terminals 60Y. These terminals are bus-connected to the plurality of circuit boards 48, thereby simplifying wiring and enabling miniaturization of the armature device 10A. Furthermore, in the armature device 10A of this embodiment, a pair of signal connection holes 48A, which terminate a pair of signal wires 48X, and a pair of power connection holes 48A, which terminate a pair of power wires 48Y, are arranged in a predetermined order on the edges of both sides of each of the plurality of circuit boards 48. This allows for repeated use of a predetermined connection pattern, making it easy to connect any number of circuit boards 48 via the plurality of relay terminals 62.

[0074] [Second embodiment]

[0075] In this embodiment, if Figure 11 and Figure 12 As shown in FIG. 6 , the terminal group unit 67A and the common base 50B are different from those in the first embodiment. Specifically, Figure 11 As shown, the fixing member 67 of the terminal group unit 67A includes: a longitudinal side portion 67D extending in the vertical direction and holding a plurality of relay terminals 62; and a transverse side portion 67B perpendicular to the lower end portion. In addition, a connecting hole 66C passes through the center portion of the transverse side portion 67B. Figure 12 As shown, in the common base 50B, recesses 51C are formed on the inner surface of the waterproof chamber 51. The end surfaces of the lateral sides 67B embedded in the common base 50B are exposed in each recess 51C, and both ends of the communication hole 66C are open to the waterproof chamber 51.

[0076] [Third embodiment]

[0077] In this embodiment, if Figure 13 and Figure 14 As shown, in addition to the common base 50A of the first embodiment, a plurality of common bases 50C and 50D are provided. By selecting any common base from these to fix the armature assembly 30P, an armature device 10A with different arrangements and numbers of armature assemblies 30P can be manufactured.

[0078] Specifically, if Figure 13 As shown, the common base 50C has waterproof chambers 51 arranged in two rows and two columns vertically and horizontally. Figure 14 As shown, the common base 50D has a structure in which one waterproof chamber 51 is added to the common base 50C, thereby comprising five waterproof chambers 51. In addition, a connector portion 54 is provided on the front side of each common base 50C, 50D, and a connector 57 of a connector terminal 60 is provided in the waterproof chamber 51 on the back side of the connector portion 54. In addition, in order to connect a pair of signal connector terminals 60X (see Figure 10 ) and a pair of power connector terminals 60Y (see Figure 10 ) is connected to each pair of signal lines 48X and each pair of power lines 48Y of the plurality of circuit substrates 48 corresponding to the plurality of waterproof chambers 51, and has the following structure.

[0079] That is, in the circuit board 48 of the first embodiment, the connection holes 48A (see Figure 8 、 Figure 10) Two sets of connection holes 48A are provided along the edges of two laterally opposing sides of the circuit substrate 48. However, in this embodiment, although not shown, four sets of connection holes 48A are provided along the four edges of the circuit substrate 48. Furthermore, in a set of multiple connection holes 48A arranged vertically, for example, the two upper connection holes 48A constitute a pair of signal connection holes 48A, and the two lower connection holes 48A constitute a pair of power connection holes 48A. On the other hand, in a set of multiple connection holes 48A arranged horizontally, for example, the two left connection holes 48A constitute a pair of signal connection holes 48A, and the two right connection holes 48A constitute a pair of power connection holes 48A.

[0080] Corresponding to the above-mentioned circuit substrate 48, in each waterproof chamber 51 of the common base 50C, 50D, a relay terminal 62 group is embedded in such a manner that the connectors 58 of the relay terminals 62 are arranged on any one of the four edges. Furthermore, the connectors 57 of the plurality of connector terminals 60 and the connectors 58 of the plurality of relay terminals 62 are connected to the connection holes 48A of the circuit substrate 48. Thus, a pair of signal connector terminals 60X constituting the plurality of connector terminals 60 is connected to each pair of signal lines 48X and each pair of power lines 48Y of all the circuit substrates 48 (see FIG. 1 ). Figure 10 ) and a pair of power connector terminals 60Y (see Figure 10 ).

[0081] The common bases 50C and 50D are provided with positioning protrusions 52 not only between laterally adjacent waterproof chambers 51 but also between longitudinally adjacent waterproof chambers 51. Accordingly, although not shown, the armature package 30P has the aforementioned fitting grooves 46 on its four side surfaces.

[0082] According to the structure of this embodiment, since multiple common bases 50A, 50C, and 50D are provided, component commonality can be achieved among multiple armature devices having different numbers of armature packages 30P. Furthermore, a pair of signal connection holes 48A, which terminate a pair of signal lines 48X, and a pair of power connection holes 48A, which terminate a pair of power lines 48Y, are arranged in a predetermined order on the edges of each of the four sides of each of the multiple circuit boards 48. This allows for easy connection of any number of circuit boards 48 via the multiple relay terminals 62 by repeating a predetermined connection pattern.

[0083] [Fourth embodiment]

[0084] Figure 15 A valve device 12B of this embodiment is shown. In this valve device 12B, a box portion 45 in an armature package 30P is open upward. The box portion 45 is fixed to the common base 50A described in the first embodiment in a state of close contact from below.

[0085] It should be noted that in the valve device 12B of the above embodiment, the box portion 45 is arranged between the cylindrical protrusion 38 and the cylindrical main body 40 (see FIG. Figure 3 ) is offset to the side, but for example, the box portion 45 can also be arranged at a position directly above the cylindrical protrusion 38 and the cylindrical main body portion 40.

[0086] [Fifth embodiment]

[0087] right Figure 16 A. Figure 16 B. Figure 17 The common base 50E of this embodiment is described below. Figure 16 As shown in FIG. 5A , the common base 50E of this embodiment is similar to the common base 50A of the first embodiment in a horizontally long strip shape and has multiple (e.g., three) waterproof chambers 51 extending in the longitudinal direction, and positioning protrusions 52 are provided between adjacent waterproof chambers 51. Furthermore, a connector 54 is disposed on the back side of the central waterproof chamber 51.

[0088] Furthermore, in the common base 50E, an embedded circuit board 49 is embedded across the plurality of waterproof chambers 51. Figure 16 As shown in FIG. 3B , the embedded circuit board 49 includes terminal connection portions 49A corresponding to the respective waterproof chambers 51 and a strip-shaped relay portion 49B that connects adjacent terminal connection portions 49A. Figure 16 As shown in A, when each terminal connection part 49A is arranged at a lower position of the corresponding waterproof chamber 51, the embedded circuit substrate 49 is buried in the common base 50E, and a single side of each terminal connection part 49A is arranged as an exposed part 49E to be flush with the inside of the waterproof chamber 51 and exposed in the waterproof chamber 51.

[0089] like Figure 16 As shown in FIG. 2B , four connection holes 49C are arranged in a row along the lower edge of each terminal connection portion 49A. Furthermore, four connection holes 49G are arranged in a row along the upper edge of the terminal connection portion 49A of the waterproof chamber 51, which serves as the back side of the connector portion 54. Furthermore, the circuit in the embedded circuit substrate 49 includes a pair of signal lines and a pair of power lines (not shown). Of the four connection holes 49C in each terminal connection portion 49A, for example, the conductors on the inner surfaces of the left pair of connection holes 49C are electrically conductive to the pair of signal lines, while the conductors on the inner surfaces of the remaining pair of connection holes 49C are electrically conductive to the pair of power lines. Furthermore, of the four connection holes 49G in the central terminal connection portion 49A, for example, the conductors on the inner surfaces of the left pair of connection holes 49G are electrically conductive to the pair of signal lines, while the conductors on the inner surfaces of the remaining pair of connection holes 49G are electrically conductive to the pair of power lines.

[0090] Furthermore, the base end of a terminal fitting 68 having the same structure as the connector 58 of the relay terminal 62 described in the first embodiment is inserted into each connection hole 49C and soldered or brazed, so that the entire terminal fitting 68 protrudes from the inner surface of the waterproof chamber 51. Furthermore, the base end of a connector terminal 60V is inserted into each connection hole 49G and soldered or brazed, so that the connecting pin on the front end side of the connector terminal 60V (not shown) protrudes from the inner surface of the cover portion 55.

[0091] Furthermore, a tube insertion hole 49D is formed in the terminal connection portion 49A near the intermediate portion 49B. Furthermore, the tube 66 described in the first embodiment is positioned opposite the intermediate portion 49B, with both ends of the tube 66 extending through the tube insertion hole 49D. Furthermore, the tube 66 is embedded in the common base 50E along with the embedded circuit board 49, with both ends of the tube 66 protruding from the inner surface of each waterproof chamber 51.

[0092] Although not shown, the armature assembly 30P of this embodiment is identical to the armature assembly 30P of the first embodiment, except that it includes a circuit substrate 48 similar to the armature assembly 30P of the third embodiment. Furthermore, when multiple armature assemblies 30P are assembled on a common base 50E, the terminal fittings 68 are integrally connected to the multiple connection holes 48A of the circuit substrate 48 of each armature assembly 30P. This allows the entire armature assembly (not shown) of this embodiment to form a circuit similar to that of the armature assembly 10A of the first embodiment.

[0093] In the armature device of the present embodiment, the relay circuit connecting the connector terminals 60V and the plurality of armatures 30 is mounted on the embedded circuit board 49 embedded in the common base 50E, so the relay circuit becomes compact.

[0094] [Other Implementation Methods]

[0095] In the first embodiment, the valve with a rotor incorporated in the armature device 10A is a flow control valve, but it may be a valve that simply opens and closes. Furthermore, the armature device 10A may be incorporated in a device with a rotor having a mechanism unrelated to the valve.

[0096] In the first and second embodiments described above, the communicating holes 66C are formed in the common bases 50A and 50B by embedding the tube 66 or the fixing member 63 having the communicating holes 66C in the common bases 50A and 50B. However, the mold for forming the common base may include a slide pin, and the communicating holes may be formed in the resin member constituting the common base. Furthermore, in the first embodiment, the vent holes 65 are formed in the common bases 50A and 50B. However, the vent holes 65 may be provided by embedding a tube or the like in the common base.

[0097] In the first embodiment, the plurality of connector terminals 60 are commonly connected to the circuits of the plurality of circuit boards 48 . However, each circuit board 48 may be provided with a separate dedicated connector terminal 60 , which may be individually connected to each circuit board 48 .

[0098] In the above embodiment, the connector portion 54 is disposed at the end of the front side of the common base 50A, but it may be disposed in the center. In addition, the connector portion 54 is disposed on the opposite side of the waterproof chamber 51, but it may be disposed to the side of the waterproof chamber 51.

[0099] In the above embodiment, the pair of signal connection holes 48A and the pair of power connection holes 48A are arranged in a row along the edge of the circuit board 48 , but they may be arranged in multiple rows or not in a row.

[0100] In the above embodiment, the waterproof chambers 47 and 51 are formed in both the common bases 50A to 50E and the plurality of armature packages 30P. However, for example, the waterproof chambers may be formed in only one of the common bases 50A to 50E and the plurality of armature packages 30P.

[0101] In the armature device 10A of the embodiment, there are three or more armature packages 30P, but the present invention is not limited thereto and two armature packages 30P may be used. Figure 1 、 13 , 14, and may be arranged in a horizontal manner or in a matrix, for example, in an L-shape or a ring shape.

[0102] In the terminal group units 63A, 67A of the embodiment, the tube 66 or the horizontal side portion 67B having the connecting hole 66C is arranged at one end side of the length direction of the fixing member 63, 67, but the tube 66 or the horizontal side portion 67B having the connecting hole 66C can also be arranged at any position in the length direction of the fixing member 63, 67.

[0103] <Note>

[0104] The following describes the feature groups extracted from the above embodiments, showing their effects as needed. It should be noted that, for ease of understanding, corresponding structures are appropriately shown in brackets, etc. in the above embodiments, but these feature groups are not limited to the specific structures shown in brackets, etc.

[0105] [Feature 1]

[0106] An armature device (10A), wherein the armature device (10A) comprises: a plurality of armature packages (30P) which utilize a resin component (37) to cover an armature (30) fitted on the outside of a rotor housing (25) of a stepping motor (99); a common base (50A to 50E) made of resin which fixes the plurality of armature packages (30P) together; a connector portion (54) which has a cover portion (55) integrally formed on the common base (50A to 50E) and a plurality of connector terminals (60) at least part of which is accommodated in the cover portion (55); and a relay circuit (48X, 48Y, 62) which is covered by both or one of the common base (50A to 50E) and the resin component (37) of the armature package (30P) and connects the plurality of connector terminals (60) and each of the armatures (30).

[0107] [Feature 2]

[0108] According to the armature device (10A) described in feature 1, the armature device (10A) comprises: a waterproof chamber (47, 51) which is provided on both or one of the plurality of armature packages (30P) and the common base (50A~50E), and is sealed in a waterproof state by fixing the plurality of armature packages (30P) and the common base (50A~50E); and a circuit substrate (48) which is accommodated in each of the waterproof chambers (47, 51) and is provided for mounting a circuit connected to the armature (30), the relay circuit (48X, 48Y, 62) including a plurality of common base-side conductive components (62, 68), the plurality of common base-side conductive components (62, 68) being buried in the common base (50A~50E), and the ends of which are exposed in the waterproof chambers (47, 51) and connected to the circuit substrate (48).

[0109] [Feature 3]

[0110] According to the armature device (10A) described in feature 2, the armature device (10A) has a plurality of relay terminals (62) as the common base side conductive components (62), the plurality of relay terminals (62) are buried in the common base (50A~50E), and both ends are exposed in the adjacent waterproof chambers (47, 51) and are respectively connected to the circuit of the circuit substrate (48).

[0111] [Feature 4]

[0112] According to the armature device (10A) described in feature 3, the circuit of each circuit substrate (48) includes a pair of signal lines (48X), a pair of power lines (48Y), a plurality of pairs of signal connection holes (48A) that become the ends of the pair of signal lines (48X), and a plurality of pairs of power connection holes (48A) that become the ends of the pair of power lines (48Y), the pair of signal connection holes (48A) and the pair of power connection holes (48A) are arranged in a certain order at at least two locations on the edge of the circuit substrate (48), and the plurality of connector terminals (60) are composed of The plurality of relay terminals (62) between the adjacent waterproof chambers (47, 51) are composed of a pair of signal connector terminals (60X) of a connector (57) connected to the pair of signal connection holes (48A), and a pair of power connector terminals (60Y) having a connector (57) connected to the pair of power connection holes (48A); and the plurality of relay terminals (62) between the adjacent waterproof chambers (47, 51) are composed of a pair of signal relay terminals (62X) of a connector (58) connected to the pair of signal connection holes (48A), and a pair of power relay terminals (62Y) having a connector (58) connected to the pair of power connection holes (48A).

[0113] [Feature 5]

[0114] According to the armature device (10A) described in feature 4, the circuit substrate (48) is quadrilateral, and the pair of signal connection holes (48A) and the pair of power connection holes (48A) are arranged in a certain order on the edge portions of at least two sides.

[0115] [Feature 6]

[0116] The armature device (10A) according to feature 2, wherein

[0117] The armature device (10A) includes an embedded circuit substrate (49), the embedded circuit substrate (49) is embedded in the common base (50E), and the common base-side conductive member (68) is mounted thereon.

[0118] [Feature 7]

[0119] The armature device (10A) according to any one of features 2 to 6, wherein the armature device (10A) includes a communication hole (66C) for connecting the adjacent waterproof chambers (47, 51) to each other.

[0120] [Feature 8]

[0121] An armature device (10A) according to any one of features 3 to 5, wherein the armature device (10A) comprises: a fixing member (63) buried in the common base (50A-50D) and fixed with the plurality of relay terminals (62); and a tube (66) fixed to the fixing member (63) together with the plurality of relay terminals (62), wherein both ends of the tube (66) are open to adjacent waterproof chambers (47, 51) and connect the adjacent waterproof chambers (47, 51) to each other.

[0122] [Feature 9]

[0123] According to the armature device (10A) described in feature 6, the armature device (10A) has a tube (66), the tube (66) is fixed to the embedded circuit substrate (49), both ends of the tube (66) are open to the adjacent waterproof chambers (47, 51), and the adjacent waterproof chambers (47, 51) are connected to each other.

[0124] [Feature 10]

[0125] An armature device (10A) according to any one of features 7 to 9, wherein the armature device (10A) has a vent hole (65), the vent hole (65) being formed in the common base (50A-50E) and connecting the interior of the cover portion (55) with the interior of the waterproof chamber (47, 51) on the back side of the cover portion (55).

[0126] [Feature 11]

[0127] An armature device (10A) according to any one of features 2 to 10, wherein the armature device (10A) has positioning interlocking portions (46, 52), the positioning interlocking portions (46, 52) being provided on the common base (50A-50E) and the plurality of armature packages (30P), being interlocked with each other in the opening direction of the waterproof chamber (47, 51), and positioning the plurality of armature packages (30P) two-dimensionally relative to the common base (50A-50E) in directions other than the opening direction.

[0128] [Feature 12]

[0129] According to the armature device (10A) described in feature 11, the positioning engaging portion (46, 52) includes: a positioning protrusion (52) which protrudes from a portion between a plurality of package fixing portions (50P) on which the plurality of armature packages (30P) are overlapped in the common base (50A-50E); and an engaging groove (46) which is formed on a side surface of the armature package (30P) for engaging a side portion of the positioning protrusion (52).

[0130] [Feature 13]

[0131] According to the armature device (10A) described in feature 12, the engaging groove (46) has a dovetail groove structure in which the groove bottom side is wider than the groove opening, and the side of the positioning protrusion (52) has a cross-sectional shape corresponding to the dovetail groove structure.

[0132] [Feature 14]

[0133] An armature device (10A) according to any one of features 2 to 13, wherein the plurality of connector terminals (60) are composed of a pair of signal connector terminals (60X) and a pair of power connector terminals (60Y), and the pair of signal connector terminals (60X) and the pair of power connector terminals (60Y) are commonly connected to the plurality of circuit substrates (48).

[0134] [Feature 15]

[0135] The armature device (10A) according to any one of features 1 to 14, wherein the armature device (10A) includes a plurality of common bases (50A to 50E) having different numbers of the armature packages (30P) fixed thereto as the common bases (50A to 50E).

[0136] [Feature 16]

[0137] A valve device (12A, 12B), wherein the valve device (12A, 12B) comprises: a plurality of valves (11) with rotors, each having a rotor (27) housed in a rotor housing (25) and a valve core (29) that moves as the rotor (27) rotates; and

[0138] The armature device (10A) according to any one of features 1 to 15 comprises a plurality of armature packages (30P) fitted with the rotor housings (25) of the plurality of valves (11) with rotors.

[0139] In the armature device of feature 1 and the valve device of feature 16, multiple armature packages are fixed to a common base. This consolidates the multiple armature packages into a single component, reducing the number of components and lowering component management costs for users of the armature device and valve device. Furthermore, since only one connector is provided on the common base to connect to the multiple armatures, connector connection is simplified compared to a case where separate connectors are provided on the multiple armatures.

[0140] In the armature device of feature 2, the plurality of circuit boards connected to the plurality of armature packages are integrated into a single component, thereby also reducing the number of components. Furthermore, the plurality of circuit boards are housed in a waterproof chamber provided for each armature package, thereby achieving waterproofing. This also reduces the number of components required for waterproofing.

[0141] Furthermore, the relay circuit connecting the multiple connector terminals to the armature includes multiple common-base-side conductive members embedded in a common base, with their ends exposed within a waterproof chamber and connected to a circuit board. The multiple common-base-side conductive members, each of which serves as relay terminals and has its ends exposed within adjacent waterproof chambers and connected to circuits on the circuit board, can form part of the relay circuit, or the relay circuit can be formed by an embedded circuit board embedded in the common base and having the common-base-side conductive members mounted thereon (Feature 6). Feature 6 makes the relay circuit more compact because the relay circuit is mounted on the embedded circuit board.

[0142] In the armature device of features 4 and 5, a pair of signal connection holes serving as the ends of a pair of signal lines and a pair of power connection holes serving as the ends of a pair of power lines are arranged in a certain order on the edge portions of at least two sides of each of the plurality of circuit substrates, thereby making it possible to easily connect any number of circuit substrates via a plurality of relay terminals in a manner that repeats a certain connection pattern.

[0143] According to the armature device of feature 7, adjacent waterproof chambers are connected via the communication hole. Therefore, by inspecting the airtightness of one waterproof chamber, the airtightness of all the plurality of waterproof chambers can be inspected, and the airtightness inspection can be performed efficiently.

[0144] In order to perform the airtightness inspection, for example, a vent hole (65) is provided that communicates with one of the waterproof chambers (47, 51) from the outside, and negative pressure or positive pressure is applied to one of the waterproof chambers (47, 51) from the vent hole (65) to check whether the pressure changes due to leakage. In this case, the vent hole (65) can also be provided in a manner that opens to the outside of the cover (55) and is closed after the inspection is completed. However, if the vent hole (65) is provided in a manner that opens to the inside of the cover (55) as in feature 10, the inside of the cover (55) is sealed by fitting with the other connector, so the vent hole (65) does not need to be blocked after the inspection is completed.

[0145] In the armature devices of features 8 and 9, the communicating holes are formed by placing the tube in the mold and molding the common base. This prevents the mold for molding the common base from becoming complicated due to the formation of the communicating holes. Furthermore, in feature 8, the tube can be placed in the mold for molding the common base while being fixed together with the relay terminal by a fixing member, and in feature 9, the tube can be placed in the mold for molding the common base while being fixed to the embedded circuit board. This also facilitates placement of the tube in the mold.

[0146] In the armature device of feature 11, when the common base and the armature packages are brought closer together in the direction of the waterproof chamber opening, the positioning engaging portions engage, thereby two-dimensionally positioning the plurality of armature packages relative to the common base. In this state, the plurality of armature packages can be fixed at a predetermined position relative to the common base by pressing one of the common base and the armature packages against the other.

[0147] In the armature device of feature 12, the positioning fitting portion includes: a positioning protrusion, which partially protrudes from between adjacent package fixing portions in a common base; and a fitting groove, which is formed on the side of the armature package for the side of the positioning protrusion to fit into, so that the positioning fitting portion also functions as a reinforcement portion of the armature device.

[0148] In the armature device of feature 13, the side of the fitting groove and the positioning protrusion included in the positioning fitting portion has a dovetail groove structure and a corresponding cross-sectional shape. Therefore, the connection strength between the armature package and the common base is improved due to the positioning fitting portion, and the strength of the armature device is improved.

[0149] In the armature device of feature 14, the plurality of connector terminals in the cover are composed of a pair of signal connector terminals and a pair of power connector terminals, which are commonly connected to the plurality of circuit boards, thereby simplifying wiring and enabling miniaturization of the armature device.

[0150] In the armature device of feature 15, since a plurality of types of common bases having different numbers of fixed armature packages are provided as a common base, components can be shared among the plurality of types of armature devices having different numbers of armature packages.

[0151] It should be noted that specific examples of the technology included in the technical solution are disclosed in this specification and the accompanying drawings, but the technology recorded in the technical solution is not limited to these specific examples. It also includes various deformation and changes to the specific examples. In addition, it also includes a method of taking out a part from the specific example separately.

[0152] Description of reference numerals:

[0153] 10A armature device

[0154] 11 Valve with rotor

[0155] 12A, 12B valve assembly

[0156] 25 rotor housing

[0157] 27 rotors

[0158] 29 valve core

[0159] 30 armature

[0160] 30P armature package

[0161] 46 fitting groove (positioning fitting part)

[0162] 47, 51 waterproof rooms

[0163] 48 circuit substrate

[0164] 48A connection hole (for signal and power)

[0165] 48X signal line (relay circuit)

[0166] 48Y power line (relay circuit)

[0167] 49 embedded circuit board

[0168] 49E exposed part

[0169] 50A~50E shared base

[0170] 50P package fixing part

[0171] 51 waterproof rooms

[0172] 52 positioning protrusion (positioning fitting portion)

[0173] 54 connector part

[0174] 55 hood

[0175] 60 connector terminals

[0176] 60X signal connector terminals

[0177] 60Y power connector terminals

[0178] 61, 63 fixed components

[0179] 61A terminal block unit

[0180] 62 relay terminal (relay circuit)

[0181] 65 vents

[0182] 66 tube

[0183] 66C connecting hole

[0184] 99 stepper motor.

Claims

1. An armature device, wherein: The armature device comprises: a plurality of armature packages that cover the armature fitted to the outside of the rotor housing of the stepping motor with a resin member; a common base made of resin, which commonly fixes the plurality of armature packages; a connector portion having a cover portion integrally formed on the common base and a plurality of connector terminals at least partially accommodated in the cover portion; as well as A relay circuit is covered by one or both of the common base and the resin member of the armature package and connects the plurality of connector terminals and the armatures.

2. The armature device according to claim 1, wherein The armature device comprises: a waterproof chamber provided in one or both of the plurality of armature packages and the common base, and sealed in a waterproof state by fixing the plurality of armature packages to the common base; and A circuit board is housed in each of the waterproof chambers and is used to mount a circuit connected to the armature. The relay circuit includes a plurality of common base-side conductive members, which are buried in the common base and have ends exposed in the waterproof chamber and connected to the circuit substrate.

3. The armature device according to claim 2, wherein The armature device includes a plurality of relay terminals as conductive members on the common base side. The plurality of relay terminals are embedded in the common base, have both ends exposed in the adjacent waterproof chambers, and are respectively connected to the circuits of the circuit board.

4. The armature device according to claim 3, wherein The circuit of each circuit substrate includes a pair of signal lines, a pair of power lines, a plurality of pairs of signal connection holes forming ends of the pair of signal lines, and a plurality of pairs of power connection holes forming ends of the pair of power lines. The pair of signal connection holes and the pair of power connection holes are arranged in a certain order at at least two locations on the edge of the circuit substrate. The plurality of connector terminals are composed of a pair of signal connector terminals having connectors connected to the pair of signal connection holes, and a pair of power connector terminals having connectors connected to the pair of power connection holes. The plurality of relay terminals between the adjacent waterproof chambers include a pair of signal relay terminals having connectors connected to the pair of signal connection holes, and a pair of power relay terminals having connectors connected to the pair of power connection holes.

5. The armature device according to claim 4, wherein The circuit substrate is in a quadrilateral shape, and the pair of signal connection holes and the pair of power connection holes are arranged in a certain order on edge portions of at least two sides.

6. The armature device according to claim 2, wherein The armature device includes an embedded circuit substrate embedded in the common base and having the common base-side conductive member mounted thereon.

7. The armature device according to any one of claims 2 to 6, wherein: The armature device includes a communication hole that connects the adjacent waterproof chambers to each other.

8. The armature device according to any one of claims 3 to 5, wherein: The armature device comprises: a fixing member embedded in the common base and fixing the plurality of relay terminals; and A tube is fixed to the fixing member together with the plurality of relay terminals, and both ends of the tube are open to the adjacent waterproof chambers so as to connect the adjacent waterproof chambers to each other.

9. The armature device according to claim 6, wherein The armature device includes a pipe fixed to the embedded circuit board, with both ends of the pipe opening toward the adjacent waterproof chambers to connect the adjacent waterproof chambers.

10. The armature device according to any one of claims 7 to 9, wherein The armature device includes a vent hole formed in the common base and connecting the interior of the cover portion with the interior of the waterproof chamber on the rear side of the cover portion.

11. The armature device according to any one of claims 2 to 10, wherein: The armature device includes a positioning fitting portion provided on the common base and the plurality of armature packages, which fits with each other in the opening direction of the waterproof chamber and two-dimensionally positions the plurality of armature packages relative to the common base in directions other than the opening direction.

12. The armature device according to claim 11, wherein The positioning fitting portion includes a positioning protrusion protruding from a portion of the common base between the multiple package fixing portions on which the multiple armature packages are overlapped, and a fitting groove formed on a side surface of the armature package for fitting a side portion of the positioning protrusion.

13. The armature device according to claim 12, wherein The interlocking groove is a dovetail groove structure with the bottom side of the groove wider than the groove opening. The side portion of the positioning protrusion has a cross-sectional shape corresponding to the dovetail groove structure.

14. The armature device according to any one of claims 2 to 13, wherein The plurality of connector terminals are composed of a pair of signal connector terminals and a pair of power connector terminals. The pair of signal connector terminals and the pair of power connector terminals are commonly connected to the plurality of circuit substrates.

15. The armature device according to any one of claims 1 to 14, wherein The armature device includes a plurality of types of common bases serving as the common base, each having different numbers of the armature packages fixed thereto.

16. A valve device, wherein: The valve device comprises: A plurality of valves with rotors, each having a rotor housed in a rotor housing and a valve core that moves as the rotor rotates; and The armature device according to any one of claims 1 to 15, comprising a plurality of armature packages fitted into the rotor housings of the plurality of valves with rotors.

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