Stator unit and electric valve using the same

Abstract

To provide a stator unit capable of improving reliability while securing waterproofness, and a motor operated valve using the same.SOLUTION: The stator unit includes a yoke, a stator coil, a filled resin portion made of a resin material, and a partition member having an opening into which a part of the yoke is inserted, a wire extending from the stator coil passes through the opening of the partition member, and one end of the wire is soldered to a power supply pin, and the filled resin portion covers the wire extending from the stator coil to a soldered portion in the opening, and the partition member.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a stator unit and an electric valve using the same.

Background Art

[0002] For example, in order to drive an electric valve or the like that is disposed in the middle of a fluid piping system and controls the opening and closing of the fluid flow path and the flow rate, a stator unit provided with a stator coil is used. In the stator unit, it may be necessary to ensure waterproofness so that moisture does not reach the stator coil.

[0003] In Patent Document 1, stator coils are stacked vertically, set in a mold in which a cover is previously arranged, a thermosetting resin such as urethane resin is poured into the mold as a mold resin by vacuum casting, and then cured in a drying furnace, and then demolded, whereby a stator unit in which the entire stator coil is covered and filled with the mold resin is disclosed. According to the electric valve of Patent Document 1, waterproofness can be exhibited by surrounding the entire stator coil with a mold resin such as urethane resin.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, a wire is wound around the stator coil, and one end thereof is drawn out to the outside for power supply to the stator coil. Therefore, when the entire stator coil is surrounded by the mold resin, a part of the drawn wire and the mold resin will adhere to each other. In such a state, when the environmental temperature around the electric valve changes, a relatively large load may be applied to the wire due to the difference in linear expansion between the metal parts and the mold resin.

[0006] The present invention aims to provide a stator unit and an electric valve using the same that can improve reliability while ensuring waterproofness. [Means for solving the problem]

[0007] The stator unit according to the present invention is York and, A bobbin arranged in the internal space of the yoke, and wound around the bobbin Stator coil and A resin filling part made of resin material, The aforementioned Bobbin It has a partition member having an opening into which a part of it is inserted, A lateral gap is formed between a part of the bobbin and the opening of the partition member, which connects the internal space of the yoke to the outside. The wire extending from the stator coil is the Side gap It passes through, and one end of it The aforementioned external It is soldered to the power supply pins. The aforementioned resin filling portion is The internal space of the yoke, the lateral gap, and the area around the pin are filled, The stator coil and the stator coil The wire extends from the soldered portion and covers the partition member. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a stator unit and an electric valve using the same that can improve reliability while ensuring waterproofness. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a longitudinal cross-sectional view showing a stator unit according to the first embodiment. [Figure 2] Figure 2 is a top view showing the stator unit according to the first embodiment with the cover removed. [Figure 3] Figure 3 is a side view of the stator unit in Figure 2, taken in the direction of arrow A in Figure 1. [Figure 4] Figure 4 is a longitudinal cross-sectional view of an annular intermediate product obtained during the manufacturing process of the stator unit. [Figure 5] Figure 5 is a side view of a B-B cross section of the configuration shown in Figure 2. [Figure 6] Figure 6 is an enlarged cross-sectional view showing the partition member shown in Figure 4. [Figure 7] Figure 7 is an enlarged view showing part C of Figure 5. [Figure 8] Figure 8 is an enlarged view showing part D of Figure 1. [Figure 9] Figure 9 is a cross-sectional view similar to Figure 8 according to the comparative example. [Figure 10] Figure 10 is a longitudinal cross-sectional view showing the stator unit according to the second embodiment. [Figure 11] Figure 11 is a longitudinal cross-sectional view of an annular intermediate product obtained in the manufacturing process of the stator unit. [Figure 12] Figure 12 is an enlarged cross-sectional view showing the periphery of the partition member in Figure 10. [Figure 13] Figure 13 is a side view of the intermediate product in the direction of arrow E in Figure 11.

Embodiments for Carrying out the Invention

[0010] Hereinafter, embodiments according to the present invention will be described with reference to the drawings. Note that the stator unit of the present invention can be used, for example, for driving an electric valve, but the application is not limited thereto.

[0011] (First Embodiment) FIG. 1 is a longitudinal sectional view showing a stator unit 10 according to the first embodiment. FIG. 2 is a top view showing the stator unit 10 according to the first embodiment with the cover removed. FIG. 3 is a side view of the stator unit 10 in FIG. 2 viewed in the direction of arrow A in FIG. 1. FIG. 4 is a longitudinal sectional view of an annular intermediate product 1 obtained in the manufacturing process of the stator unit 10. FIG. 5 is a side view of a B-B cross section of the configuration shown in FIG. 2. FIG. 6 is an enlarged sectional view showing the partition member 30 shown in FIG. 4. FIG. 7 is an enlarged view showing part C in FIG. 5. FIG. 8 is an enlarged view showing part D in FIG. 1. The rotor unit inside the can and the stator unit constitute a stepping motor. In this specification, the axial direction of the stator unit is the vertical direction, and the radial direction with respect to the axis of the stator unit is the radial direction.

[0012] The stator unit 10 has a phase-A yoke 11a, a phase-A bobbin 12a, a phase-A coil 13a, a phase-B yoke 11b, a phase-B bobbin 12b, a phase-B coil 13b, a filled resin part 14 (shown by dot-drawing in FIG. 1), a partition member 30, and a cover 40. Here, the phase-A yoke 11a and the phase-B yoke 11b are referred to as yokes, the phase-A bobbin 12a and the phase-B bobbin 12b are referred to as bobbins, and the phase-A coil 13a and the phase-B coil 13b are referred to as stator coils.

[0013] The phase-A yoke 11a, the phase-A bobbin 12a, the phase-A coil 13a, the phase-B yoke 11b, the phase-B bobbin 12b, the phase-B coil 13b, the filled resin part 14, and the partition member 30 are combined with each other to form the intermediate product 1 shown in FIG. 4.

[0014] The phase-A yoke 11a has a hollow annular shape with a rectangular cross section in the radial direction. The phase-A yoke 11a is made of metal and has a first plate part 11d, a second plate part 11e, an outer plate part 11f, a plurality of first pole teeth 11g, and a plurality of second pole teeth 11h. The first plate part 11d has an annular shape. The second plate part 11e has an annular shape and is arranged in parallel with a gap in the axial direction of the stator unit with respect to the first plate part 11d.

[0015] The outer plate portion 11f has a cylindrical shape. One end of the outer plate portion 11f is connected to the outer edge of the first plate portion 11d, and the outer plate portion 11f is positioned perpendicular to the first plate portion 11d.

[0016] Multiple first pole teeth 11g are connected to the inner periphery of the first plate portion 11d and are arranged perpendicular to the first plate portion 11d. Multiple first pole teeth 11g have a tapered shape, with their tips directed toward the second plate portion 11e. Multiple first pole teeth 11g are arranged at equal intervals in the circumferential direction.

[0017] Multiple second pole teeth 11h are connected to the inner periphery of the second plate portion 11e and are arranged perpendicular to the second plate portion 11e. Multiple second pole teeth 11h have a tapered shape, with their tips directed toward the first plate portion 11d. Multiple second pole teeth 11h are arranged at equal intervals in the circumferential direction.

[0018] Multiple first pole teeth 11g and multiple second pole teeth 11h are arranged alternately with spacing in the circumferential direction. Multiple first pole teeth 11g and multiple second pole teeth 11h form the inner circumferential surface of the stator unit 10 (and intermediate product 1).

[0019] By press forming, a component having a first plate portion 11d, an outer plate portion 11f, and a first pole tooth 11g, and a component having a second plate portion 11e and a second pole tooth 11h are formed, and by combining these components, an A-phase yoke 11a is obtained. Parts of the periphery of the A-phase yoke 11a and the B-phase yoke 11b are cut out in a rectangular shape, forming a notched edge 11k in each case.

[0020] The A-phase bobbin 12a has a cylindrical shape and is made of resin. The A-phase bobbin 12a has a first flange portion 12c, a second flange portion 12d, and a cylindrical portion 12e. The first flange portion 12c and the second flange portion 12d have an annular plate shape and are arranged parallel to the first flange portion 12c with an axial gap between them. The cylindrical portion 12e connects the inner circumferential edge of the first flange portion 12c and the inner circumferential edge of the second flange portion 12d. The second flange portion 12d of the A-phase bobbin 12a and the second flange portion 12d of the B-phase bobbin 12b are provided with pin holding portions 12f, 12f, respectively. As shown in Figure 5, the pin holding portions 12f, 12f each have a concave-convex portion consisting of three convex portions with three pins 21 planted in them and spaced apart, and three concave portions adjacent to the convex portions, and these concave-convex portions are engaged with each other.

[0021] In Figure 4, the A-phase coil 13a is wound around the A-phase bobbin 12a. The A-phase bobbin 12a and the A-phase coil 13a are arranged in the internal space of the A-phase yoke 11a (the space surrounded by the first plate portion 11d, the second plate portion 11e, the outer plate portion 11f, the first pole teeth 11g, and the second pole teeth 11h). The first flange portion 12c is in contact with the first plate portion 11d of the A-phase yoke 11a. The second flange portion 12d is in contact with the second plate portion 11e of the A-phase yoke 11a. The cylindrical portion 12e is in contact with the multiple first pole teeth 11g and the multiple second pole teeth 11h of the A-phase yoke 11a. The A-phase bobbin 12a divides the internal space of the A-phase yoke 11a from the space between the multiple first pole teeth 11g and the multiple second pole teeth 11h of the A-phase yoke 11a.

[0022] The B-phase yoke 11b, B-phase bobbin 12b, and B-phase coil 13b are the same as the A-phase yoke 11a, A-phase bobbin 12a, and A-phase coil 13a, except that they are arranged in reverse with respect to the axial direction; therefore, the same reference numerals are used for each part to avoid redundant explanation. Multiple (six in this case) power supply pins 21 are embedded in the pin holding portion 12f and extend radially.

[0023] The A-phase yoke 11a and the B-phase yoke 11b are arranged coaxially. The second plate portion 11e of the A-phase yoke 11a and the second plate portion 11e of the B-phase yoke 11b are in contact. The end of the outer plate portion 11f of the A-phase yoke 11a and the end of the outer plate portion 11f of the B-phase yoke 11b, which is opposite to it, are in contact except for the notched edge 11k. Wire 16 is wound around the A-phase bobbin 12a and the B-phase bobbin 12b to form the A-phase coil 13a and the B-phase coil 13b. The wire 16 drawn out from the A-phase coil 13a and the B-phase coil 13b extends radially outward along the second flange portion 12d, and its end W is wrapped around the pin 21 and soldered. The wire 16 other than the soldered portion (SL in Figure 8) is coated with polyimide resin.

[0024] The filling resin portion 14 is made of urethane resin and covers the intermediate product 1 on the inside of the cover 40.

[0025] In Figure 1, the filling resin portion 14 has a sealing portion 14a. The sealing portion 14a has a generally cylindrical shape and is positioned to fill the space between the multiple pole teeth (multiple first pole teeth 11g and multiple second pole teeth 11h) of the A-phase yoke 11a and the B-phase yoke 11b. This space has multiple branched portions, which are connected to each other to form a single space. The sealing portion 14a fills this space and is connected to the multiple first pole teeth 11g and multiple second pole teeth 11h without any steps. The sealing portion 14a, together with the multiple first pole teeth 11g and multiple second pole teeth 11h, forms the inner circumference of the stator unit 10.

[0026] The partition member 30 is made of resin, for example, and as shown in Figure 6, has an opening 31 that penetrates the stator unit 10 radially (left-right direction in Figure 6), a first partition portion 32, and a second partition portion 33 that is positioned radially outward from the first partition portion 32 of the stator unit 10. The pin 21 can pass through the opening 31. When the filling resin portion 14 is applied to the intermediate product 1, the filling resin portion 14 covers the wires 16 and pins 21 that extend from the A-phase coil 13a and B-phase coil 13b to the soldered portion SL within the opening 31 of the partition member 30, and also covers the outer circumference of the partition member 30.

[0027] The opening 31 has an inner opening 31s close to the first partition 32 and an outer opening 31t close to the second partition 33. The outer opening 31t has a substantially rectangular cross-section perpendicular to the direction of penetration of the opening 31. However, the opening 31 is not limited to the above, as long as it has a shape that can form the gaps CL1 and CL2 described later, for example it does not have to penetrate radially, and the outer opening 31t does not have to be substantially rectangular.

[0028] In Figures 5 and 7, the inner opening 31s has a central surface 31a and an end surface 31b that are opposite each other vertically, and an inner surface 31e that intersects the end surface 31b. The distance between the vertically opposite central surfaces 31a is greater than the distance between the vertically opposite end surfaces 31b.

[0029] As shown in Figure 7, the end surface 31b, which acts as a contact portion, contacts the upper and lower surfaces of the second flange portion 12d, but the central surface 31a, which acts as a non-contact portion, does not contact the upper and lower surfaces of the second flange portion 12d. As a result, a gap (lateral gap) CL1 is created between the central surface 31a and the second flange portion 12d.

[0030] In the cross-section shown in Figure 8, the central surface 31a of the inner opening 31s has a shape corresponding to the coil-side upper (or lower) surface of the second flange portion 12d of the A-phase bobbin 12a (and B-phase bobbin 12b), specifically having a radially extending plane 31c and an arc-shaped surface 31d connected to the plane 31c. Therefore, a substantially constant gap CL1 is secured between the coil-side upper (or lower) surface of the second flange portion 12d and the plane 31c and the arc-shaped surface 31d. The wire 16 is drawn out from the A-phase coil 13a (and B-phase coil 13b) through the gap (vertical gap) CL2 between the partition member 30 and the A-phase coil 13a (and B-phase coil 13b), and further extends towards the pin 21 through gap CL1. The dimensions of gaps CL1 and CL2 are larger than the wire diameter of the wire 16.

[0031] In Figure 6, the vertical dimension of the first partition 32 is smaller than the vertical dimension of the second partition 33, and therefore a stepped surface 34 is formed between the first partition 32 and the second partition 33. The outer circumference of the first partition 32 fits into the notched edges 11k of the A-phase yoke 11a and the B-phase yoke 11b. The stepped surface 34 that abuts against the outer plate 11f is a plane parallel to the axis of the stator unit 10, but may also have a partially cylindrical shape corresponding to the outer surface of the outer plate 11f, thereby enabling it to fit tightly against the outer surface.

[0032] The first partition portion 32 has a tapered surface 32a whose vertical dimension decreases as it approaches the coil, and its tip surface 32b is a flat or partially cylindrical surface. As shown in Figure 8, the stepped surface 34 abuts against the outer circumferential surface of the outer plate portion 11f of the A-phase yoke 11a and B-phase yoke 11b, thereby positioning the partition member 30 and the A-phase coil 13a and B-phase coil 13b in the radial direction, which creates a specified gap CL2 between the tip surface 32b and the outer circumferential surface of the coil (A-phase coil 13a in Figure 8). Therefore, contact between the tip surface 32b and the coil wire 16 is avoided, and damage to the wire 16 can be suppressed.

[0033] In Figure 1, the cover 40 is made up of an outer peripheral wall 41, a top wall 42 that closes the top of the outer peripheral wall 41, and a cylindrical recess 43 formed in the top wall 42. An annular portion 44 protruding in the axial direction is formed on the edge of the cylindrical recess 43. The annular portion 44 is fitted into the inner circumference of the first plate portion 11d of the A-phase yoke 11a to position the intermediate product 1 and the cover 40.

[0034] Pin 21 is soldered to the circuit of the relay board 22, and a connector 23 is connected to the circuit of the relay board 22. Wiring 24 extends from the connector 23 to the outside and is connected to a control device (not shown). When the stator unit 10 of this embodiment is assembled to the electric valve, power is supplied from the external control device to the A-phase coil 13a and B-phase coil 13b via the wiring 24, relay board 22, and pin 21, generating a magnetic force that drives the rotor unit.

[0035] The resin-filled portion 14 covers the pins 21, the relay board 22, the connector 23, and the wiring 24.

[0036] Preferably, the anti-rotation member 25 is attached to the first plate portion 11d of the B-phase yoke 11b by welding. The anti-rotation member 25 is a member that prevents the stator unit 10 from rotating by fixing it to the can side when the stator unit 10 is assembled to the electric valve.

[0037] When forming the stator unit 10 of this embodiment, the cover 40 is inverted from the state shown in Figure 1. Furthermore, with the relay board 22 connector 23 and wiring 24 attached to the pins 21 of the intermediate product 1, the cover 40 is brought closer from above, and the inner circumference of the first plate portion 11d is fitted onto the outer circumference of the annular portion 44. This connects the inner circumference of the intermediate product 1 and the inner circumference of the cylindrical recess 43 without any steps. Subsequently, a cylindrical core (not shown) is brought closer from above the cover 40 and fitted onto the inner circumference of the intermediate product 1 and the inner circumference of the cylindrical recess 43. At this time, the inner circumference of the cylindrical recess 43 is in close contact with the outer circumference of the core around its entire circumference, preventing the urethane resin from entering the inside of the cylindrical recess 43.

[0038] From this state, molten urethane resin is injected into the cover 40 so that the liquid level exceeds the welded portion of the anti-rotation member 25. When vacuumed, the urethane resin enters between the multiple first pole teeth 11g and multiple second pole teeth 11h, forming a sealing portion 14a that follows the outer surface of the core, and also enters the opening 31 of the partition member 30 and fills around the wire 16. Subsequently, the urethane resin is heated, causing it to harden and form the filled resin portion 14. After the urethane resin has hardened, the stator unit 10 is completed together with the cover 40.

[0039] Figure 9 is a cross-sectional view similar to Figure 8, relating to a comparative example. In the comparative example, it is the same as the embodiment described above, except that it does not have a partition member, so the same reference numerals are used and redundant explanations are omitted.

[0040] In the comparative example shown in Figure 9, since there is no partition member, the wire 16 drawn from the A-phase coil 13a (and B-phase coil 13b) is in contact with the urethane resin filling resin portion 14 up to the soldered portion SL of the pin 21. Because urethane resin has a tendency to adhere to the polyimide of the wire 16, when the ambient temperature of the electric valve to which the stator unit of the comparative example is assembled changes and the filling resin portion 14 shrinks relatively significantly, an external force is applied to the wire 16, which is in close contact with the filling resin portion 14, in the direction normal to the second flange portion 12d. Specifically, an external force F1' is applied to the wire 16 in a direction away from the planar portion of the second flange portion 12d, and an external force F2' is applied in a direction away from the arc-shaped portion of the second flange portion 12d. If the shrinkage rate of the filling resin portion 14 is high, the external forces F1' and F2' become larger, and the load on the wire 16 becomes relatively large. In particular, the curved section of wire 16 is prone to excessive tension when an external force F2' is applied.

[0041] In contrast, according to this embodiment, as shown in Figure 8, the filling resin portion 14 covers the wire 16 extending from the A-phase coil 13a and B-phase coil 13b to the soldered portion SL within the opening 31 of the partition member 30. Therefore, even if the ambient temperature of the electric valve to which the stator unit 10 is assembled changes and the filling resin portion 14 shrinks relatively significantly, the amount of shrinkage is small because the volume of urethane resin within the opening 31 is small. Consequently, the external force F1 applied to the wire 16 in the direction away from the planar portion of the second flange portion 12d is smaller than the external force F1' applied to the same location in the comparative example, and the external force F2 applied in the direction away from the arc-shaped portion of the second flange portion 12d is smaller than the external force F2' applied to the same location in the comparative example. Therefore, there is an advantage in that the load on the wire 16 can be suppressed.

[0042] Furthermore, the filling resin section 14 covers the entirety of the A-phase yoke 11a, the A-phase bobbin 12a, the A-phase coil 13a, the B-phase yoke 11b, the B-phase bobbin 12b, and the B-phase coil 13b, thereby providing a waterproof function.

[0043] (Second embodiment) Figure 10 is a longitudinal cross-sectional view showing a stator unit 10A according to a second embodiment. Figure 11 is a longitudinal cross-sectional view of an annular intermediate product 1A obtained during the manufacturing process of the stator unit 10A. Figure 12 is a magnified cross-sectional view showing the area around the partition member in Figure 10. Figure 13 is a side view of the intermediate product 1A in the direction of arrow E in Figure 11, but the wires are omitted from the illustration.

[0044] In this embodiment, the configuration of the partition member 30A differs from that of the first embodiment, but the other configurations are the same as in the first embodiment, so the same reference numerals are used and redundant explanations are omitted.

[0045] In Figure 12, the partition member 30A has an opening 31A through which the pin 21 passes in the radial direction of the stator unit 10A, a first partition portion 32, and a second partition portion 33A positioned radially outward from the first partition portion 32. The first partition portion 32 has the same shape as in the first embodiment, so a redundant explanation is omitted.

[0046] The opening 31A has an inner opening 31s and an outer opening 31At. The inner opening 31s has the same shape as in the first embodiment and has the same relationship as the second flange portion 12d, so a redundant explanation is omitted.

[0047] The outer opening 31At has a tapered opening 31Ac that approaches the pin 21 as it extends radially outward from the stator unit 10A, and a parallel portion 31Ad that connects to the tapered opening 31Ac and is parallel to the pin 21.

[0048] The second partition portion 33A has a tapered surface portion 33Aa that approaches the parallel portion 31Ad as it extends radially outward from the stator unit 10A, and an outer end surface 33Ab.

[0049] According to this embodiment, since the outer end surface 33Ab of the second partition portion 33A is in contact with the surface of the relay board 22, the positioning of the relay board 22 relative to the partition member 30A becomes easier, and the workability when soldering the pins 21 to the circuit of the relay board 22 is improved.

[0050] Furthermore, since the opening 31A has a parallel section 31Ad with a smaller cross-sectional area on the radially outer side of the tapered opening 31Ac, the amount of urethane resin entering the opening 31A from the parallel section 31Ad side can be limited when filling with urethane resin. Therefore, even if thermal shrinkage occurs after the urethane resin has hardened, the load applied to the wire 16 can be suppressed.

[0051] It should be noted that the present invention is not limited to the embodiments described above. Within the scope of the present invention, any component of the embodiments described above can be modified. Furthermore, any component can be added to or omitted in the embodiments described above.

[0052] This specification includes disclosures of the following inventions. (First aspect) York and, Stator coil and A resin filling part made of resin material, A partition member having an opening into which a part of the yoke is inserted, The wire extending from the stator coil passes through the opening in the partition member, and one end of the wire is soldered to a power supply pin. The filling resin portion covers the wire that extends from the stator coil to the soldered portion within the opening, and the partition member. A stator unit characterized by the following features.

[0053] (Second aspect) The partition member abuts against the outer circumferential surface of the yoke, thereby positioning it with respect to the radial direction of the stator unit. This creates a vertical gap between the partition member and the stator coil that is larger than the diameter of the wire, and the wire passes through this vertical gap. A stator unit according to a first embodiment, characterized by the following:

[0054] (Third aspect) The opening of the partition member has a contact portion that abuts against the yoke and a non-contact portion adjacent to the contact portion that does not abut against the yoke. A lateral gap larger than the wire diameter is formed between the yoke and the non-contact portion, and the wire passes through the lateral gap. A stator unit according to the first or second embodiment, characterized by the above.

[0055] (Fourth aspect) One end of the partition member abuts against the relay board to which the pin is attached. A stator unit according to any of the first to third embodiments, characterized by the above.

[0056] (Fifth aspect) Having a stator unit according to any of the first to fourth embodiments, An electric valve characterized by the following features. [Explanation of Symbols]

[0057] 10, 10A stator unit 11a Phase A yoke 11b Phase B yoke 12a Phase A bobbin 12b B-phase bobbin 13a Phase A coil 13b B-phase coil 14. Filled resin section 16 wires 30, 30A partition members 40 Cover

Claims

1. York and, A bobbin arranged in the internal space of the yoke, and a stator coil wound around the bobbin, A resin filling part made of resin material, The partition member has an opening into which a part of the bobbin is inserted, A lateral gap is formed between a part of the bobbin and the opening of the partition member, which connects the internal space of the yoke to the outside. The wire extending from the stator coil passes through the lateral gap, and one end of it is soldered to a power supply pin on the outside. The aforementioned resin filling portion fills the internal space of the yoke, the lateral gap, and the area around the pin, and covers the stator coil, the wire extending from the stator coil to the soldered portion, and the partition member. A stator unit characterized by the following features.

2. The partition member abuts against the outer circumferential surface of the yoke, thereby positioning it with respect to the radial direction of the stator unit. This creates a vertical gap between the partition member and the stator coil that is larger than the diameter of the wire, and the wire passes through this vertical gap. The stator unit according to feature 1.

3. The opening of the partition member has a contact portion that abuts against the bobbin and a non-contact portion adjacent to the contact portion that does not abut against the yoke. A lateral gap larger than the wire diameter is formed between the bobbin and the non-contact portion, and the wire passes through the lateral gap. The stator unit according to feature 1.

4. One end of the partition member abuts against the relay board to which the pin is attached. The stator unit according to feature 1.

5. A stator unit having the stator unit according to any one of claims 1 to 4, An electric valve characterized by the following features.

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