WO2020012831A1 - Mold coil and electrically driven valve - Google Patents

Mold coil and electrically driven valve Download PDF

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Publication number
WO2020012831A1
WO2020012831A1 PCT/JP2019/022382 JP2019022382W WO2020012831A1 WO 2020012831 A1 WO2020012831 A1 WO 2020012831A1 JP 2019022382 W JP2019022382 W JP 2019022382W WO 2020012831 A1 WO2020012831 A1 WO 2020012831A1
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WO
WIPO (PCT)
Prior art keywords
case
wire
filler
cylindrical body
lead terminal
Prior art date
Application number
PCT/JP2019/022382
Other languages
French (fr)
Japanese (ja)
Inventor
晋平 山部
小柳津　薫
Original Assignee
株式会社不二工機
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Filing date
Publication date
Application filed by 株式会社不二工機 filed Critical 株式会社不二工機
Publication of WO2020012831A1 publication Critical patent/WO2020012831A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/12—Insulating of windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets

Definitions

  • the present invention relates to a mold coil and an electrically driven valve for driving a driven object by excitation.
  • the molded coil has a bobbin and a winding portion made of a wire wound around the bobbin. Lead wires are respectively connected to the start and end of the wire forming the winding portion via lead terminals, and the lead wires are drawn out. The entire winding portion is molded and sealed with resin.
  • a molded coil excites the winding by passing a current through the wire through the lead wire.
  • the suction element and the plunger inserted into the bobbin are driven to open and close a driven object such as a valve directly or indirectly connected to the plunger. Since the molded resin flows so as to cover the gaps between the electric wires to ensure insulation, heat generation and burnout due to a rare short circuit during energization of the wires are prevented.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a low-cost molded coil and an electric drive valve which can be easily mass-produced.
  • the molded coil of the present invention at one end of the cylindrical body, a bobbin having a lid whose cylindrical body is enlarged in diameter, and a winding portion formed by a wire wound around the outer periphery of the cylindrical body.
  • a case accommodating the tubular body and the winding portion, and an insulating filler filled in the case, wherein the case has an opening sealed by the lid, And an inlet for injecting the filler.
  • the tubular body is expanded in diameter, and has a flange having a portion in contact with the inner wall of the case, and the peripheral surface of the flange has the wire led out from the winding portion.
  • the groove communicates with the winding portion side in the case and the inside of the groove, and has a notch through which the wire is inserted, and the filler material is provided in the case. It may be filled from the winding part side to the inside of the groove via the notch.
  • the groove is defined by being surrounded by a pair of opposing protruding edges protruding along the peripheral surface of the flange, and the protruding edge on the winding portion side protrudes outward from the other protruding edge.
  • the case may have a portion in contact with the inner wall of the case, and the peripheral surface of the other overhanging edge may be separated from the inner wall of the case.
  • the case may have a bulging portion bulging in a direction away from the cylindrical body to increase the volume, and the inlet may be provided in the bulging portion.
  • the inlet may be provided on the side of the case opposite to the opening sealed by the lid.
  • It may have a lead terminal to which a wire led out from the winding portion is connected, and the injection port may be provided on a side of the case opposite to the lead terminal with the tubular body interposed therebetween.
  • a lead terminal connected to a wire derived from the winding portion may be provided in a region facing the injection port from inside the case.
  • the case is connected to the lead terminal, and the case has a support portion that supports a lead wire led out, and the lead terminal is filled with the filler together with a connection portion with the lead wire. You may.
  • An electrically driven valve including the above-described molded coil and a valve element driven by a driving force generated by energizing the winding portion is also one embodiment of the present invention.
  • FIG. 2 is a perspective view illustrating a solenoid valve to which the first embodiment is applied. It is an exploded perspective view showing the whole composition of a mold coil of a 2nd embodiment. It is an external appearance perspective view which shows the whole structure of the molded coil of 2nd Embodiment. It is an exploded perspective view showing the whole composition of a mold coil of a 3rd embodiment.
  • FIGS. 1 and 4 are views showing an example of the configuration of a molded coil 100 according to the first embodiment.
  • FIG. 1 is an exploded perspective view
  • FIG. 2 is an external perspective view
  • FIG. 3 is a front view
  • FIG. FIG. 4 is a sectional view taken along line AA of FIG. 3.
  • the molded coil 100 is configured by housing a winding part 20 in which a wire 21 is wound around a bobbin 10 in a case 30, injecting a filler P, and molding.
  • the bobbin 10 is provided with a lead terminal 22 that is connected to the start end 21a and the end 21b of the wire 21 derived from the winding part 20.
  • the bobbin 10 has a cylindrical body 11, a lid 12, and a flange 13, as shown in FIG.
  • the cylindrical body 11 is a cylindrical member whose axis is linear.
  • the lid 12 is formed by expanding one end of the cylindrical body 11.
  • the lid 12 is a disk shape orthogonal to the axis of the cylindrical body 11 and centered on this axis.
  • a through-hole 12a is formed in the lid 12 (see FIG. 4).
  • the through hole 12a is a circle having substantially the same diameter as the inner diameter of the tubular body 11.
  • a continuous fitting portion 12b is provided over the entire outer periphery of the lid 12.
  • the fitting portion 12b is formed by a step. This step is formed by reducing the edge of the lid 12 on the side of the cylindrical body 11.
  • the diameter of the lid 12 is larger than the diameter of the winding part 20 in order to form a space around the winding part 20 for filling the filler P. That is, the diameter of the lid 12 is determined by the amount of the wire 21 wound around the cylindrical body 11.
  • the flange 13 is formed by enlarging the other end of the cylindrical body 11, that is, the end opposite to the lid 12, and has a portion in contact with the inner wall of the case 30.
  • the flange 13 is a plate-like body orthogonal to the axis of the tubular body 11, as shown in FIG.
  • the flange 13 has a semicircular portion 13a and a trapezoidal portion 13b.
  • the semicircular portion 13a is a substantially semicircular portion centered on the axis of the tubular body 11.
  • the trapezoidal portion 13b is a portion protruding in a substantially trapezoidal shape following the semicircular portion 13a.
  • the outer edge of the flange 13 has a substantially U-shape with a narrowed tip.
  • a groove 13c is provided on the peripheral surface of the flange 13.
  • the groove 13c is formed continuously along a substantially U-shaped outer edge.
  • the wire 21 derived from the winding part 20 follows this groove 13c.
  • the groove 13c has a concave shape depressed toward the axial side of the tubular body 11. That is, the groove 13c is defined by being surrounded by the pair of opposed projecting edges 131 and 132 projecting along the peripheral surface of the flange 13.
  • the projecting edge 131 on the winding part 20 side projects beyond the other projecting edge 132. Due to this difference in the amount of overhang, the overhanging edge 131 on the winding part 20 side has a portion in contact with the inner wall of the case 30. The peripheral surface of the other overhanging edge 132 does not contact the inner wall of the case 30.
  • the diameter of the projecting edge 131 is larger than the diameter of the winding part 20 in order to form a space around the winding part 20 for filling the filler P. That is, the diameter of the lid 12 and the diameter of the overhanging edge 131 are determined so that such a space is formed (see FIG. 4).
  • the flange 13 is provided with a notch 131a as shown in FIG.
  • the notch 131a is formed in the overhanging edge 131 to allow the wire 21 to pass therethrough and to communicate between the winding portion 20 and the inside of the groove 13c.
  • Two notches 131a are formed at separated positions in order to separate and pass the starting end 21a side and the ending 21b side of the wire 21 separately.
  • a lead terminal 22 is provided on the flange 13.
  • the lead terminal 22 is a conductive member, and is connected to a wire 21 derived from the winding part 20.
  • the lead terminal 22 is provided in a pair corresponding to the start end 21 a and the end 21 b of the wire 21.
  • the lead terminal 22 of the present embodiment is a crank-shaped plate.
  • One end of the lead terminal 22 is attached to a linear flat surface other than the substantially U-shaped portion of the outer edge of the flange 13, and the whole protrudes in a direction orthogonal to the axis of the tubular body 11.
  • a through hole 13d is formed in the flange 13.
  • the through hole 13d is a circle having substantially the same diameter as the inner diameter of the tubular body 11.
  • the inside of the tubular body 11 communicates with the outside.
  • the flange 13 is provided with a protrusion 13e in which the periphery of the through hole 13d is raised in a ring shape.
  • the bobbin 10 has a cylindrical body 11, a lid 12, and a flange 13 integrally formed of an insulating material. That is, the bobbin 10 has the tubular body 11, the lid body 12, and the flange 13 formed of a common material without any seam.
  • a material of the bobbin 10 for example, a PPS resin can be used.
  • the winding part 20 is formed by a wire 21 wound around the outer periphery of the tubular body 11.
  • the wire 21 is a conductive thin wire.
  • the wire 21 is, for example, a copper wire coated with enamel.
  • the starting end 21a which is the end of the winding start of the wire 21, is drawn out of the winding part 20, passes through one notch 131a, extends along the groove 13c, and is connected to one lead terminal 22.
  • the terminal end 21b which is the end of the winding of the wire 21, is led out of the winding part 20, passes through the other notch 131a, and is connected to the other lead terminal 22.
  • the wire 21 and the lead terminal 22 are connected, for example, by fusing using resistance welding.
  • Fusing is a technique in which a magnet wire is sandwiched between projections or the like provided on a current-carrying terminal, and connection between the magnet wire and the current-carrying terminal is performed while melting the coating of the magnet wire by heat generated during resistance welding.
  • the case 30 is a container for accommodating the tubular body 11 and the winding part 20, as shown in FIGS.
  • the case 30 has an opening 31 sealed by the lid 12 of the bobbin 10 and an injection port 32 for injecting the filler P.
  • the case 30 of the present embodiment has a substantially cylindrical shape as a whole. One end in the axial direction of the case 30 is an opening 31.
  • the opening 31 opens one end of the case 30 entirely.
  • At the edge of the opening 31 there is formed a fitting portion 31a that matches the step of the fitting portion 12b of the lid 12.
  • the opening 31 and the lid 12 have substantially the same diameter, and the fitting portions 12b and 31a are fitted and bonded via an adhesive such as epoxy to be sealed.
  • the lid 12 of the bobbin 10 also serves as a part of the case 30 that accommodates the winding part 20.
  • the other end of the case 30 is closed by a flat end surface 33 orthogonal to the axis.
  • This end face 33 corresponds to the flange 13 side of the bobbin 10 housed in the case 30.
  • a through hole 33 a is formed in the end face 33. The outer edge of the protrusion 13e formed on the flange 13 of the bobbin 10 fits into the through hole 33a.
  • a connector housing 35 is provided on the curved side surface 34 of the case 30.
  • the connector housing 35 has a flat cylindrical shape in which the connector 36 is housed.
  • the connector 36 is a pair of plate-shaped conductive members. One end of each of the pair of connectors 36 is integrally connected to the pair of lead terminals 22 as shown in FIG. 4 and protrudes in a direction in which the lead terminals 22 are extended.
  • the connector 36 is embedded and supported in the connector accommodating portion 35 so that the tip is exposed.
  • the injection port 32 and the connector accommodating portion 35 are arranged on the side surface 34 of the case 30 in a direction parallel to the axis of the tubular body 11. That is, the injection port 32 and the connector accommodating portion 35 are provided at positions adjacent to each other in the axial direction.
  • the case 30 has a bulged portion 37 bulged in a direction away from the axis of the tubular body 11 to increase the volume.
  • the inlet 32 is provided in the bulging portion 37.
  • the bulging portion 37 of the present embodiment is a region surrounded by a rectangular tube shape protruding from the side surface 34, and the opening at this end is the rectangular inlet 32.
  • the bulging portion 37 is provided to prevent an unfilled portion around the winding portion 20 due to sink marks.
  • the sink is a phenomenon in which the volume decreases when the temperature decreases after the filler P is cured. For this reason, the volume of the bulging portion 37 is large enough to accommodate the filler P in an amount equal to or more than the volume that compensates for the decrease in volume due to sink.
  • the case 30 of the present embodiment has a divided structure of a first case 30A and a second case 30B.
  • the first case 30A and the second case 30B have a shape that is divided by cutting a cylindrical shape along a plane in the axial direction.
  • the first case 30A and the second case 30B each have a semi-cylindrical shape.
  • the cutting plane separating the first case 30A and the second case 30B is closer to the lead terminal 22 side, that is, to the connector accommodating portion 35 side and the injection port 32 side, beyond the axis. Therefore, the first case 30A has a larger cross section in the direction perpendicular to the axis than the second case 30B.
  • the first case 30 ⁇ / b> A accommodates most of the cylindrical body 11 and the winding part 20.
  • the second case 30B accommodates a part of the cylindrical body 11 and the winding part 20 on the lead terminal 22 side.
  • fitting portions 38A and 38B are formed at the edges of the first case 30A and the second case 30B by steps that fit each other, and are bonded to each other via an adhesive so that they match. .
  • the first case 30A has an end face 33A and a side face 34A integrally formed. That is, the first case 30A is continuously formed of a common material without any seams.
  • the second case 30B an end surface 33B, a side surface 34B, a connector housing portion 35, and a bulging portion 37 are integrally formed. That is, the second case 30 ⁇ / b> B is continuously formed of a common material without any seams.
  • a PPS resin can be used as a material of the case 30, for example.
  • the filler P is an insulating resin.
  • a thermosetting resin such as epoxy can be used.
  • the filler P is injected from the injection port 32, is filled around the winding part 20, and is hardened.
  • the filling of the filler P is performed, for example, as follows. First, the cylindrical body 11, the winding part 20, and the flange 13 are sandwiched between the first case 30A and the second case 30B so that the fitting parts 38A, 38B match each other. Glue and seal. At this time, the fitting portion 12b of the lid 12 and the fitting portion 31a of the first case 30A and the second case 30B are also bonded and sealed so as to match. Thereby, the connectors 36 in the connector accommodating portions 35 are respectively connected to the lead terminals 22. Further, the outer periphery of the projecting edge 131 of the flange 13 contacts the inner wall of the case 30. However, the space between the outer periphery of the overhanging edge 131 and the inner wall of the case 30 is not completely sealed, and includes a gap through which the filler P flows.
  • the case 30 containing the tubular body 11 and the winding part 20 is housed in a vacuum chamber, and the pressure in the vacuum chamber is reduced by a pressure reducing device to remove the air in the case 30. Then, the filler P is injected from the injection port 32 directed in the direction opposite to the direction in which gravity acts. The injection amount of the filler P is set to an amount that fills the bulging portion 37 in consideration of a decrease in volume due to sink. The filler P flows into the space around the winding part 20 in the case 30 and the gap between the wires 21 and is hardened.
  • the filling material P flowing from the inlet 32 toward the winding portion 20 is partially prevented from flowing into the groove 13 c by the projecting edge 131 of the flange 13 in contact with the inner wall of the case 30. It flows into the groove 13c through a partial gap between the outer edge 131 and the inner wall of the case 30. Further, since the flow of the filler P into the groove 13c is promoted through the notch 131a, the periphery of the wire 21 in the groove 13c is filled with the filler P and hardened. That is, the filler P is filled from the winding part 20 side in the case 30 into the groove 13c through the notch 131a.
  • the above-described molded coil 100 is assembled to a valve body 300 together with a housing 200 forming a magnetic path, for example, as shown in FIG. 5, to form an electromagnetic valve.
  • the valve body 300 includes a suction element (not shown), a plunger, a valve element, and an orifice.
  • the suction element is made of a magnetic material, and is inserted into the cylindrical body 11.
  • the plunger is a hollow rod-shaped body made of a magnetic material, and is slidably disposed inside the cylindrical body 11.
  • the valve body is fixed to the tip of the plunger. That is, one end of the plunger is located on the suction element side, and the valve body is fixed to the other end.
  • the orifice opens and closes a flow path with the valve body.
  • the wire 21 is energized by energizing the wire 21 and the plunger is attracted to the suction element side, the valve element moves and the opening of the flow path between the orifice and the orifice is adjusted.
  • the valve element moves by the urging force of a spring or the like provided between the suction element and the plunger, and closes the flow path between the valve element and the orifice.
  • Such an electromagnetic valve is used, for example, as a compressor drive valve.
  • the bobbin 10 having the lid 12 in which the diameter of the cylindrical body 11 is increased at one end of the cylindrical body 11 and the wire wound around the outer circumference of the cylindrical body 11
  • the case 30 includes the winding part 20 formed by the base member 21, the cylindrical body 11 and the winding part 20, and an insulating filler P filled in the case 30.
  • the case 30 has an opening 31 sealed by the lid 12 and an inlet 32 for injecting the filler P.
  • the filling material P is filled using the case 30 without using a jig such as a mold, and after the filling material P is cured, the case 30 can be used as an exterior of the mold coil 100 as it is. Accordingly, it is not necessary to use an expensive jig such as a mold for molding with the filler P, and the device can be manufactured at low cost. In addition, since there is no need to remove the jig, mass production is easy.
  • the case 30 with the opening 31 sealed by the lid 12 of the bobbin 10, the wall surface of the case 30 is reduced, so that the case 30 is easily formed, but the case 30 itself is easily deformed. .
  • the opening 31 is sealed and supported by the lid 12 of the bobbin 10, sufficient strength is secured. For this reason, it is possible to prevent deformation due to external force, pressure applied during filling of the filler P, or sink due to curing of the filler P.
  • the tubular body 11 has a flange 13 whose diameter is enlarged and has a portion that is in contact with the inner wall of the case 30.
  • the groove 13c along which the formed wire 21 is provided is provided.
  • the groove 13c communicates between the winding portion 20 side in the case 30 and the inside of the groove 13c, and has a notch 131a into which the wire 21 is inserted.
  • the filler P is filled from the winding part 20 side in the case 30 into the groove 13c through the notch 131a.
  • the strength of the case 30 is also ensured by the flange 13 in contact with the inner wall of the case 30, and deformation due to pressure applied to the case 30 at the time of injecting the filler P or sink at the time of curing can be prevented.
  • the filler P can flow into the groove 13c along which the wire 21 led out from the winding part 20 passes through the notch 131a, and is hardened. Therefore, the insulation of the wire 21 led out for connection to the outside is ensured, and the wire 21 is prevented from being broken by the pressure due to sink of the filler P on the winding part 20 side.
  • the groove 13c is defined by being surrounded by a pair of opposed protruding edges 131, 132 protruding along the peripheral surface of the flange 13.
  • the projecting edge 131 on the winding part 20 side has a portion in contact with the inner wall of the case 30 by projecting outside the other projecting edge 132.
  • the peripheral surface of the other overhanging edge 132 is separated from the inner wall of the case 30. For this reason, a part of the wall surface constituting the groove 13c is reduced due to the difference in the amount of overhang between the overhanging edge 131 and the overhanging edge 132, so that the filler P can easily flow into the groove 13c.
  • the case 30 has a bulging portion 37 bulging in a direction away from the axis of the tubular body 11, and the inlet 32 is provided in the bulging portion 37. For this reason, by filling the filler P to an amount reaching the inside of the bulging portion 37, it is possible to prevent the occurrence of an unfilled portion due to sink.
  • the connector accommodating portion 35 and the injection port 32 are arranged on the side surface of the case 30 in a direction parallel to the axis of the tubular body 11. For this reason, even if the injection port 32 which is an opening portion is bulged by the bulging portion 37, as compared with a case where the bulging portion 37 and the connector accommodating portion 35 are provided at different positions in the circumferential direction of the case 30. Therefore, the bulging portion 37 does not interfere.
  • the inlet 32 of the case 30 of the present embodiment is provided on the side opposite to the opening 31 sealed by the lid 12 of the case 30.
  • the case 30 has a cylindrical shape, and the inlet 32 has a size that extends at least over the entire inner diameter of the case 30.
  • the injection port 32 is configured by opening the entire end of the case 30 opposite to the opening 31.
  • the connector housing 35 is configured separately from the case 30.
  • a part of the inlet 32 is provided with a concave receiving portion 32a on which the connector accommodating portion 35 is mounted.
  • the cylindrical body 11, the winding part 20, and the lid 12 are inserted into the case 30 from the injection port 32 side, and the lid 12 is adhered to the opening 31 with an adhesive and sealed. Since the diameter of the lid 12 is slightly larger than the inner diameter of the case 30, the lid 12 or the case 30 is elastically deformed, and the bobbin 10 can be assembled to the case 30.
  • the connector accommodating portion 35 is mounted on the receiving portion 32a and fixed by bonding with an adhesive so that the lead terminal 22 is connected to the connector 36.
  • the bulging part 37 is provided between the flange 13 and the inlet 32 as shown in FIG. Have been.
  • the bulging portion 37 is a portion in which the case 30 bulges away from the tubular body 11 to increase the volume.
  • the bulging portion 37 of the present embodiment has a region formed between the flange 13 and the inlet 32 because the axial length of the bobbin 10 is shorter than the axial length of the case 30. It is.
  • the filler P is injected from the injection port 32 with the cylindrical core M inserted inside the cylindrical body 11.
  • the filler P is dropped on the flange 13 and spreads to the outer edge of the flange 13, flows into the groove 13 c from the overhanging edge 132, passes through the notch 131 a on the outer edge of the overhanging edge 131, and It flows into the part 20 side.
  • the filler P flows through the gap between the outer edge of the overhanging edge 131 and the inner wall of the case 30 and flows into the winding part 20 side. Thereby, the filler P is filled around the winding part 20 and the gap between the wires 21.
  • the amount of the filler P to be injected is an amount that fills the inside of the bulging portion 37.
  • the inlet 32 is provided on the side of the case 30 opposite to the opening 31 sealed by the lid 12. For this reason, the filler P injected from the injection port 32 flows linearly along the axial direction of the cylindrical body 11 and is easily filled.
  • the injection port 32 has a size that extends at least over the entire length of the inner diameter of the case 30, a large amount of the filler P can flow in a short time, and casting efficiency is improved.
  • the injection port 32 since the injection port 32 is configured by opening the entire end of the case 30 opposite to the opening 31, the injection port 32 has a large opening, and the filler P is easily injected. Further, by filling the filler P to an amount that reaches the inside of the bulging portion 37, occurrence of an unfilled portion due to sink can be prevented.
  • the lid 12 of the bobbin 10 has a semicircular portion 12c having a substantially semicircular shape on the lead terminal 22 side, that is, the wire 21 withdrawal side, and a rectangular shape protruding on the opposite side across the lead terminal 22 and the cylindrical body 11. It has a rectangular portion 12d. Thus, the outer edge of the lid 12 has a substantially U shape.
  • Other configurations of the bobbin 10 and the winding unit 20 are the same as those of the first embodiment.
  • the injection port 32 of the present embodiment is provided on the opposite side to the lead terminal 22 of the case 30 across the tubular body 11. That is, the injection port 32 of the present embodiment is provided not on the connector housing portion 35 side of the case 30 as in the first embodiment, but on the opposite side.
  • the injection port 32 has a size that extends at least over the entire length of the case 30 in the axial direction.
  • the injection port 32 is configured by opening the entire side surface of the case 30 opposite to the lead terminal 22.
  • the cross section of the case 30 in a direction orthogonal to the axis is substantially U-shaped, and the opening 31 has a shape that matches the outer edge of the lid 12 and is sealed.
  • the cylindrical body 11, the winding part 20, and the flange 13 are inserted into the case 30 from the inlet 32, and the lid 12 is adhered to the opening 31 with an adhesive and sealed.
  • the lead terminal 22 is connected to the connector 36 in the connector housing 35.
  • the bulging portion 37 is provided between the winding portion 20 and the injection port 32, as shown in FIG. Is provided.
  • the bulging portion 37 is a portion in which the case 30 bulges away from the tubular body 11 to increase the volume.
  • the bulging portion 37 of the present embodiment is configured such that the radial length of the winding portion 20 is shorter than the radial length of the case 30, so that the bulging portion 37 is located between the winding portion 20 and the injection port 32. It is a region to be formed.
  • the filler P is injected from the injection port 32.
  • the filler P flows around the winding part 20 and spreads.
  • the filler P also flows directly into the groove 13c (see FIG. 8). Thereby, the filler P is filled around the winding part 20 and the gap between the wires 21.
  • the amount of the filler P to be injected is an amount that fills the inside of the bulging portion 37.
  • the injection port 32 is provided on the side of the case 30 opposite to the lead terminal 22 with the cylindrical body 11 interposed therebetween. For this reason, the injection port 32 can be formed relatively large without being interfered by the connector accommodating portion 35 or the like. Therefore, a large amount of the filler P can be flowed in a short time, and casting efficiency is improved. For example, since the inlet 32 has a size that extends at least over the entire length of the shaft of the case 30, the filler P can be injected at a high speed. Further, since the injection port 32 is formed by opening the entire side surface of the case 30 opposite to the lead terminal 22, the filler P can be injected more easily.
  • the filler P can also flow directly into the groove 13c to reliably fill the periphery of the wire 21. Further, by filling the filler P to an amount that reaches the inside of the bulging portion 37, it is possible to prevent the occurrence of an unfilled portion due to sink marks.
  • the lid 12 of the bobbin 10 of the present embodiment has a semicircular semicircular portion 12e concentric with the axis of the cylindrical body 11, and a trapezoidal portion 12f whose lead terminal 22 side protrudes in a substantially trapezoidal shape.
  • the outer edge of the lid 12 has a substantially U-shape with a narrowed tip.
  • the lead terminal 22 provided on the flange 13 of the cylindrical body 11 projects in a direction perpendicular to the axis of the cylindrical body 11 and is bent toward the lid 12 so as to be parallel to the axis of the cylindrical body 11.
  • the shape is inverted L-shaped.
  • Other configurations of the bobbin 10 and the winding unit 20 are the same as those of the first embodiment.
  • the lead terminal 22 is provided at a position facing the injection port 32 from inside the case 30.
  • the case 30 includes a curved surface portion 34a that is a cylindrical side surface, and a pair of flat surface portions 34b that are partly cut open along the axial direction and extend in a plate shape. The ends of the pair of flat portions 34b face each other with an interval.
  • the cross section of the case 30 in the direction perpendicular to the axis forms a semicircular portion having a substantially semicircular shape and a trapezoidal portion that protrudes in a substantially trapezoidal shape continuously from the semicircular portion. It has a narrowed U-shape.
  • One end of the case 30 in the axial direction is the opening 31 sealed by the lid 12 of the bobbin 10.
  • the opening 31 has a shape similar to the axial cross section of the case 30. That is, the opening 31 has a substantially U-shape with a narrowed end.
  • the other end of the case 30 in the axial direction is closed by a flat end surface 33.
  • the end face 33 is substantially U-shaped having a substantially semicircular semicircular portion 33b and a substantially trapezoidal trapezoidal portion 33c, and has a shape similar to a cross section in a direction orthogonal to the axis of the case 30.
  • the outer edge of the semicircular portion 33b is formed continuously with the curved surface portion 34a, and the pair of oblique sides of the trapezoidal portion 33c is formed continuously with the flat portion 34b.
  • a rectangular opening is formed by the edges of the pair of flat portions 34b, the edges of the end face 33 continuous with the edges, and the edge of the lid 12. This opening is an injection port 32 for injecting the filler P.
  • the inlet 32 has a size that extends at least over the entire length in the axial direction within the case 30.
  • the cross section orthogonal to the axis of the case 30 becomes narrower as going away from the cylindrical body 11, and the direction orthogonal to the axial direction of the injection port 32 is shorter than the diameter of the winding part 20. .
  • the injection port 32 is provided in a bulging portion 37 provided in the case 30.
  • the bulging portion 37 is a portion in which the case 30 bulges in a direction away from the tubular body 11 to increase the volume.
  • the bulging portion 37 of this embodiment is a region surrounded by the trapezoidal portion 12f of the lid 12, the trapezoidal portion 33c of the end surface 33, and the flat portion 34b.
  • the lead terminal 22 is accommodated in the bulging portion 37. That is, in the present embodiment, the position where the wire 21 is pulled out of the winding portion 20 and the position where the filler P is injected are common.
  • the case 30 is provided with a support portion 39 for supporting the lead wire 23 connected to the lead terminal 22.
  • the lead wire 23 is a member in which a conductive core wire is covered with vinyl or the like, and connects the wire 21 of the winding part 20 to an external device via a lead terminal 22.
  • the support portion 39 is a substantially U-shaped notch provided at an edge of the trapezoidal portion 33c on the side of the injection port 32.
  • a guide 39 a which is a groove parallel to the end face 33, is formed on an inner wall corresponding to a pair of opposite sides of the support portion 39.
  • a pair of concave portions 39b is provided on an inner wall corresponding to a side near the semicircular portion 33b of the support portion 39.
  • the holder 40 is a substantially rectangular parallelepiped member made of an insulating material. Projecting pieces 40a to be inserted into the guides 39a are formed on two opposing side surfaces of the holder 40. A pair of concave portions 40b corresponding to the concave portions 39b of the support portion 39 are formed on one side surface different from the two side surfaces on which the protruding pieces 40a are formed.
  • the lead wire 23 is inserted in accordance with each of the pair of recesses 39b, and the core wire exposed by removing the coating on the distal end is bent by sandwiching the projecting piece of the pair of lead terminals 22 and crimped. And the lead terminal 22 are connected. When the holder 40 is inserted into the support portion 39, the lead wire 23 is sandwiched and fixed between the concave portions 39b and the concave portions 40b.
  • the filler P is injected from the injection port 32.
  • the amount of the filler P to be injected is an amount that fills the inside of the bulging portion 37.
  • the filler P flows around the winding part 20 and spreads. Thereby, the filler P is filled around the winding part 20 and the gap between the wires 21.
  • the filling material P also flows directly from the lead terminal 22 into the groove 13c. Further, since the filler P flows into the groove 13c via the notch 131a, the periphery of the wire 21 in the groove 13c is also filled with the filler P. Thereby, the filler P is filled around the winding part 20 and the gap between the wires 21. Furthermore, it is filled so as to cover the entire connection portion between the lead terminal 22 and the lead wire 23.
  • the lead terminal 22 is provided in a region facing the injection port 32 from inside the case 30. That is, the position where the wire 21 is pulled out of the winding portion 20 and the position where the filler P is injected are common, and the opening can be enlarged, so that the efficiency of casting can be improved.
  • the injection port 32 has a size that covers the entire length in the axial direction in the case 30, so that injection is easier. On the other hand, since the direction orthogonal to the axial direction of the injection port 32 is shorter than the diameter of the winding portion 20, leakage of the filler P during injection is less likely to occur.
  • the lead terminal 22 is accommodated in the bulging portion 37, by filling the filling material P so as to fill the bulging portion 37, the entire connection portion between the lead terminal 22 and the lead wire 23 is filled. . For this reason, exposure of the lead terminal 22 due to a decrease in the volume of the filler P can be prevented. Further, the configuration of the case 30 can be simplified as compared with the case where the connector housing portion 35 is provided.
  • the present invention is not limited to the above embodiment, but includes other embodiments described below.
  • the present invention also includes a form in which all or any of the above-described embodiments and other embodiments described below are combined.
  • various omissions, replacements, and changes can be made in these embodiments without departing from the scope of the invention, and modifications thereof are also included in the invention.
  • the number of the notches 131a is two in the above embodiment, but is not limited thereto.
  • the notch 131a may be one, and the starting end 21a and the ending 21b of the wire 21 may pass through one common notch 131a.
  • the notch 131a be formed at a position opposite to the injection port 32 with the tubular body 11 interposed therebetween, since the filler P is easily filled in the groove 13c.
  • the number of the notches 131a is two as in the above-described embodiment, if the two notches 131a are formed at symmetrical positions with respect to a cross section passing through the center of the injection port 32 (for example, AA cross section in FIG.
  • notch 131a through which the wire 21 does not pass may be included.
  • the shape of the notch 131a is preferably formed larger than the cross section of the wire 21 so that the filler P can easily flow into the groove 13c, and may be formed in a V-shape or a rectangular shape, for example. .
  • the electrically driven valve to which the molded coil 100 is applied has been described as an electromagnetic valve, but is not limited to this.
  • the electrically driven valve may be a motor operated valve.
  • the solenoid valve has a valve body driven by a driving force generated by energizing the molded coil 100 and the winding unit 20.
  • the shapes of the cylindrical body 11, the winding portion 20, and the case 30 of the bobbin 10 are not limited to the cylindrical shape, and may be an elliptical cylindrical shape or a rectangular cylindrical shape.
  • the lead-out position of the wire 21 from the winding part 20, the shape of the lead terminal 22, and the like are not limited to the above embodiments.
  • Reference Signs List 10 bobbin 11 cylindrical body 12 lid 12a through hole 12b fitting portion 12c semicircular portion 12d square portion 12e semicircular portion 12f trapezoidal portion 13 flange 13a semicircular portion 13b trapezoidal portion 13c groove 13d through hole 13e projecting portion 20 winding Part 21 wire 21a start end 21b end 22 lead terminal 23 lead wire 30 case 30A first case 30B second case 31 opening 31a fitting part 32 inlet 32a receiving part 33 end face 33A end face 33B end face 33a through hole 33b semicircular part 33c Trapezoidal part 34 Side 34A Side 34B Side 34a Curved part 34b Flat part 35 Connector housing 36 Connector 37 Swelling part 38 Fitting part 38A Fitting part 38B Fitting part 39 Supporting part 39a Guide 39b Recess 40 Holder 40a Projecting piece 40b Recess 100 Mold coil 131 Overhanging edge 131a Notch 132 Overhanging edge 200 Housing 300 Valve body M Core P Filler

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  • Power Engineering (AREA)
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  • Electromagnetism (AREA)
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Abstract

Provided are a mold coil and an electrically driven valve that are suitable for low-cost mass-production. This mold coil comprises: a bobbin 10 including a tubular body 11 of which one end has a lid body 12 formed by enlarging the diameter of the tubular body 11; a winding portion 20 formed by means of a wire 21 wound around the outer periphery of the tubular body 11; a case 30 accommodating the tubular body 11 and the winding portion 20; and an insulating filler P filled inside the case 30. The case 30 has an opening 31 sealed by the lid body 12, and an injection opening 32 for injecting the filler P.

Description

モールドコイル及び電気的駆動弁Molded coil and electrically driven valve
　本発明は、励磁により駆動対象を駆動するためのモールドコイル及び電気的駆動弁に関する。 The present invention relates to a mold coil and an electrically driven valve for driving a driven object by excitation.
　モールドコイルは、ボビンと、ボビンに巻装されたワイヤからなる巻線部とを有している。巻線部を形成するワイヤの始端と終端には、リード端子を介してそれぞれリード線が接続され、このリード線が外部に引き出されている。巻線部の全体は、樹脂によりモールドされて封止されている。 The molded coil has a bobbin and a winding portion made of a wire wound around the bobbin. Lead wires are respectively connected to the start and end of the wire forming the winding portion via lead terminals, and the lead wires are drawn out. The entire winding portion is molded and sealed with resin.
　このようなモールドコイルは、リード線を介して、ワイヤに電流を流すことにより、巻線部を励磁する。これにより、ボビン内に挿入された吸引子及びプランジャを駆動して、プランジャに直接又は間接に接続された弁等の駆動対象の開閉を行う。モールドした樹脂は、電線間の隙間を覆うように流れ込んで絶縁性を確保しているため、ワイヤへの通電時のレアショートによる発熱、焼損が防止される。 モ ー ル ド Such a molded coil excites the winding by passing a current through the wire through the lead wire. Thus, the suction element and the plunger inserted into the bobbin are driven to open and close a driven object such as a valve directly or indirectly connected to the plunger. Since the molded resin flows so as to cover the gaps between the electric wires to ensure insulation, heat generation and burnout due to a rare short circuit during energization of the wires are prevented.
特開平９－１０６９１１号公報JP-A-9-106911
　巻線部を樹脂によりモールドするには、巻線部が巻装されたボビンを金型等の冶具内に配置して、治具内に絶縁性の樹脂を注入して充填し、樹脂の硬化後に冶具を取り外していた。このように治具を用いてモールドする場合、冶具にコストがかかる。また、治具への収容と樹脂の充填、治具の取り外しといった作業に手間がかかり、モールドコイルの量産性に劣る。 To mold the winding part with resin, place the bobbin around which the winding part is wound in a jig such as a mold, inject and fill the jig with insulating resin, and cure the resin. Later the jig was removed. When molding using a jig in this way, the jig is costly. In addition, it takes time and labor to accommodate the jig, fill the resin, and remove the jig, resulting in poor productivity of the molded coil.
　本発明は、上記のような課題を解決するためになされたものであり、その目的は、低コストで量産しやすいモールドコイル及び電気的駆動弁を提供することにある。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a low-cost molded coil and an electric drive valve which can be easily mass-produced.
　本発明のモールドコイルは、筒状体の一端に、前記筒状体が拡径された蓋体を有するボビンと、前記筒状体の外周に巻装されたワイヤにより形成された巻線部と、前記筒状体及び前記巻線部を収容するケースと、前記ケース内に充填された絶縁性の充填材と、を有し、前記ケースは、前記蓋体によって封止された開口と、前記充填材を注入するための注入口と、を有する。 The molded coil of the present invention, at one end of the cylindrical body, a bobbin having a lid whose cylindrical body is enlarged in diameter, and a winding portion formed by a wire wound around the outer periphery of the cylindrical body. A case accommodating the tubular body and the winding portion, and an insulating filler filled in the case, wherein the case has an opening sealed by the lid, And an inlet for injecting the filler.
　前記筒状体の他端に、前記筒状体が拡径され、前記ケースの内壁に接する部分を有するフランジを有し、前記フランジの周面には、前記巻線部から導出された前記ワイヤが沿う溝が設けられ、前記溝は、前記ケース内の前記巻線部側と前記溝内とを連通し、前記ワイヤが挿通された切欠を有し、前記充填材は、前記ケース内の前記巻線部側から前記切欠を介して前記溝内にかけて充填されていてもよい。 At the other end of the tubular body, the tubular body is expanded in diameter, and has a flange having a portion in contact with the inner wall of the case, and the peripheral surface of the flange has the wire led out from the winding portion. Is provided, the groove communicates with the winding portion side in the case and the inside of the groove, and has a notch through which the wire is inserted, and the filler material is provided in the case. It may be filled from the winding part side to the inside of the groove via the notch.
　前記溝は、前記フランジの周面に沿って張り出した一対の対向する張出縁に囲まれて画成され、前記巻線部側の張出縁は、他方の張出縁よりも外側に張り出していることにより、前記ケースの内壁に接する部分を有し、他方の張出縁の周面は、前記ケースの内壁から離隔していてもよい。 The groove is defined by being surrounded by a pair of opposing protruding edges protruding along the peripheral surface of the flange, and the protruding edge on the winding portion side protrudes outward from the other protruding edge. With this configuration, the case may have a portion in contact with the inner wall of the case, and the peripheral surface of the other overhanging edge may be separated from the inner wall of the case.
　前記ケースには、前記筒状体から離れる方向に膨出して容積を拡大した膨出部を有し、前記注入口は、前記膨出部に設けられていてもよい。 ケ ー ス The case may have a bulging portion bulging in a direction away from the cylindrical body to increase the volume, and the inlet may be provided in the bulging portion.
　前記巻線部から導出された前記ワイヤが接続されたリード端子と、前記リード端子に接続されるコネクタを収容したコネクタ収容部と、を有し、前記コネクタ収容部と前記注入口とは、前記ケースの側面に、前記筒状体の軸と平行な方向に並んで配置されていてもよい。 A lead terminal to which the wire led out from the winding portion is connected, and a connector accommodating portion accommodating a connector connected to the lead terminal, the connector accommodating portion and the injection port, It may be arranged on a side surface of the case in a direction parallel to an axis of the cylindrical body.
　前記注入口は、前記ケースの前記蓋体によって封止された前記開口とは反対側に設けられていてもよい。 注入 The inlet may be provided on the side of the case opposite to the opening sealed by the lid.
　前記巻線部から導出されたワイヤが接続されたリード端子を有し、前記注入口は、前記筒状体を挟んで、前記ケースの前記リード端子とは反対側に設けられていてもよい。 有 し It may have a lead terminal to which a wire led out from the winding portion is connected, and the injection port may be provided on a side of the case opposite to the lead terminal with the tubular body interposed therebetween.
　前記巻線部から導出されたワイヤに接続されたリード端子が、前記ケース内から前記注入口を臨む領域に設けられていてもよい。 リ ー ド A lead terminal connected to a wire derived from the winding portion may be provided in a region facing the injection port from inside the case.
　前記ケースは、前記リード端子に接続され、前記ケースが外に導出されたリード線を支持する支持部を有し、前記リード端子は、前記リード線との接続部分とともに前記充填材により充填されていてもよい。 The case is connected to the lead terminal, and the case has a support portion that supports a lead wire led out, and the lead terminal is filled with the filler together with a connection portion with the lead wire. You may.
　上記のようなモールドコイルと、前記巻線部への通電により発生した駆動力により駆動される弁体と、を有する電気的駆動弁も本発明の一態様である。 電 気 An electrically driven valve including the above-described molded coil and a valve element driven by a driving force generated by energizing the winding portion is also one embodiment of the present invention.
　本発明によれば、低コストで量産しやすいモールドコイル及び電気的駆動弁を提供することができる。 According to the present invention, it is possible to provide a molded coil and an electric drive valve which are easy to mass-produce at low cost.
第１の実施形態のモールドコイルの全体構成を示す分解斜視図である。It is an exploded perspective view showing the whole composition of a mold coil of a 1st embodiment. 第１の実施形態のモールドコイルの全体構成を示す外観斜視図である。It is an appearance perspective view showing the whole composition of the mold coil of a 1st embodiment. 第１の実施形態のモールドコイルの正面図である。It is a front view of the mold coil of a 1st embodiment. 図３のＡ－Ａ矢視断面図である。FIG. 4 is a sectional view taken along line AA of FIG. 3. 第１の実施形態を適用した電磁弁を示す斜視図である。FIG. 2 is a perspective view illustrating a solenoid valve to which the first embodiment is applied. 第２の実施形態のモールドコイルの全体構成を示す分解斜視図である。It is an exploded perspective view showing the whole composition of a mold coil of a 2nd embodiment. 第２の実施形態のモールドコイルの全体構成を示す外観斜視図である。It is an external appearance perspective view which shows the whole structure of the molded coil of 2nd Embodiment. 第３の実施形態のモールドコイルの全体構成を示す分解斜視図である。It is an exploded perspective view showing the whole composition of a mold coil of a 3rd embodiment. 第３の実施形態のモールドコイルの全体構成を示す外観斜視図である。It is an external appearance perspective view which shows the whole structure of the molded coil of 3rd Embodiment. 第４の実施形態のモールドコイルの全体構成を示す分解斜視図である。It is an exploded perspective view showing the whole composition of a mold coil of a 4th embodiment. 第４の実施形態のモールドコイルの全体構成を示す外観斜視図である。It is an external appearance perspective view which shows the whole structure of the molded coil of 4th Embodiment. 第４の実施形態のモールドコイルを軸方向に切った断面図である。It is sectional drawing which cut | disconnected the molded coil of 4th Embodiment in the axial direction. 第４の実施形態を適用した電磁弁を示す斜視図である。It is a perspective view showing the solenoid valve to which a 4th embodiment was applied.
　以下、本発明に係るモールドコイルの実施形態について、図面を参照しつつ詳細に説明する。
［第１の実施形態］
［概略構成］
　図１～図４は、第１の実施形態に係るモールドコイル１００の構成の一例を示す図であり、図１は分解斜視図、図２は外観斜視図、図３は正面図、図４は図３のＡ－Ａ矢視断面図である。図１及び図４に示すように、モールドコイル１００は、ボビン１０にワイヤ２１を巻装した巻線部２０をケース３０内に収容し、充填材Ｐを注入してモールドすることにより構成される。ボビン１０には、巻線部２０から導出されたワイヤ２１の始端２１ａと終端２１ｂに接続されるリード端子２２が設けられている。 Hereinafter, embodiments of a molded coil according to the present invention will be described in detail with reference to the drawings.
[First Embodiment]
[Schematic configuration]
1 to 4 are views showing an example of the configuration of a molded coil 100 according to the first embodiment. FIG. 1 is an exploded perspective view, FIG. 2 is an external perspective view, FIG. 3 is a front view, and FIG. FIG. 4 is a sectional view taken along line AA of FIG. 3. As shown in FIGS. 1 and 4, the molded coil 100 is configured by housing a winding part 20 in which a wire 21 is wound around a bobbin 10 in a case 30, injecting a filler P, and molding. . The bobbin 10 is provided with a lead terminal 22 that is connected to the start end 21a and the end 21b of the wire 21 derived from the winding part 20.
［詳細構成］
（ボビン）
　ボビン１０は、図１に示すように、筒状体１１、蓋体１２、フランジ１３を有する。筒状体１１は、図４に示すように、軸が直線状の円筒形の部材である。蓋体１２は、筒状体１１の一端が拡径されることにより形成されている。蓋体１２は、筒状体１１の軸に直交し、この軸を中心とする円板形状である。 [Detailed configuration]
(Bobbin)
The bobbin 10 has a cylindrical body 11, a lid 12, and a flange 13, as shown in FIG. As shown in FIG. 4, the cylindrical body 11 is a cylindrical member whose axis is linear. The lid 12 is formed by expanding one end of the cylindrical body 11. The lid 12 is a disk shape orthogonal to the axis of the cylindrical body 11 and centered on this axis.
　蓋体１２には、貫通孔１２ａが形成されている（図４参照）。貫通孔１２ａは、筒状体１１の内径と略同径の円形である。これにより、筒状体１１の内側が、外部と連通している。また、蓋体１２の外縁の全周に亘って、連続した嵌合部１２ｂが設けられている。嵌合部１２ｂは、段差により構成されている。この段差は、蓋体１２の筒状体１１側の縁が縮径することにより形成されている。なお、蓋体１２の径は、巻線部２０の周囲に充填材Ｐを充填する空間を形成するために、巻線部２０の径よりも大きい。つまり、筒状体１１に巻装されるワイヤ２１の量によって、蓋体１２の径が決まる。 貫通 A through-hole 12a is formed in the lid 12 (see FIG. 4). The through hole 12a is a circle having substantially the same diameter as the inner diameter of the tubular body 11. Thus, the inside of the tubular body 11 communicates with the outside. Further, a continuous fitting portion 12b is provided over the entire outer periphery of the lid 12. The fitting portion 12b is formed by a step. This step is formed by reducing the edge of the lid 12 on the side of the cylindrical body 11. The diameter of the lid 12 is larger than the diameter of the winding part 20 in order to form a space around the winding part 20 for filling the filler P. That is, the diameter of the lid 12 is determined by the amount of the wire 21 wound around the cylindrical body 11.
　フランジ１３は、筒状体１１の他端、つまり蓋体１２と反対端が拡径されることにより形成され、ケース３０の内壁に接する部分を有する。フランジ１３は、図１に示すように、筒状体１１の軸に直交する板状体である。フランジ１３は、半円部１３ａと台形部１３ｂを有する。半円部１３ａは、筒状体１１の軸を中心とする略半円形の部分である。台形部１３ｂは、半円部１３ａに連続して略台形状に突出した部分である。これにより、フランジ１３の外縁は、先端が狭まった略Ｕ字形を有している。 The flange 13 is formed by enlarging the other end of the cylindrical body 11, that is, the end opposite to the lid 12, and has a portion in contact with the inner wall of the case 30. The flange 13 is a plate-like body orthogonal to the axis of the tubular body 11, as shown in FIG. The flange 13 has a semicircular portion 13a and a trapezoidal portion 13b. The semicircular portion 13a is a substantially semicircular portion centered on the axis of the tubular body 11. The trapezoidal portion 13b is a portion protruding in a substantially trapezoidal shape following the semicircular portion 13a. Thus, the outer edge of the flange 13 has a substantially U-shape with a narrowed tip.
　フランジ１３の周面には、溝１３ｃが設けられている。この溝１３ｃは、略Ｕ字形の外縁に沿って連続して形成されている。この溝１３ｃには、巻線部２０から導出されたワイヤ２１が沿う。溝１３ｃは、筒状体１１の軸側に向かって窪んだ凹形状である。つまり、溝１３ｃは、フランジ１３の周面に沿って張り出した一対の対向する張出縁１３１、１３２に囲まれて画成されている。 溝 A groove 13c is provided on the peripheral surface of the flange 13. The groove 13c is formed continuously along a substantially U-shaped outer edge. The wire 21 derived from the winding part 20 follows this groove 13c. The groove 13c has a concave shape depressed toward the axial side of the tubular body 11. That is, the groove 13c is defined by being surrounded by the pair of opposed projecting edges 131 and 132 projecting along the peripheral surface of the flange 13.
　巻線部２０側の張出縁１３１は、他方の張出縁１３２よりも外側に張り出している。この張り出し量の差により、巻線部２０側の張出縁１３１はケース３０の内壁に接する部分を有している。そして、他方の張出縁１３２の周面は、ケース３０の内壁に接しない。蓋体１２と同様に、張出縁１３１の径は、巻線部２０の周囲に充填材Ｐを充填する空間を形成するために、巻線部２０の径よりも大きい。つまり、このような空間が形成されるように、蓋体１２の径と張出縁１３１の径とが決定されている（図４参照）。 張 The projecting edge 131 on the winding part 20 side projects beyond the other projecting edge 132. Due to this difference in the amount of overhang, the overhanging edge 131 on the winding part 20 side has a portion in contact with the inner wall of the case 30. The peripheral surface of the other overhanging edge 132 does not contact the inner wall of the case 30. Similarly to the lid 12, the diameter of the projecting edge 131 is larger than the diameter of the winding part 20 in order to form a space around the winding part 20 for filling the filler P. That is, the diameter of the lid 12 and the diameter of the overhanging edge 131 are determined so that such a space is formed (see FIG. 4).
　フランジ１３には、図１に示すように、切欠１３１ａが設けられている。この切欠１３１ａは、巻線部２０側と溝１３ｃ内とを連通し、ワイヤ２１を挿通するために、張出縁１３１に形成されている。切欠１３１ａは、ワイヤ２１の始端２１ａ側と終端２１ｂ側とをそれぞれ分離して通すために、離隔した位置に２つ形成されている。 The flange 13 is provided with a notch 131a as shown in FIG. The notch 131a is formed in the overhanging edge 131 to allow the wire 21 to pass therethrough and to communicate between the winding portion 20 and the inside of the groove 13c. Two notches 131a are formed at separated positions in order to separate and pass the starting end 21a side and the ending 21b side of the wire 21 separately.
　フランジ１３には、リード端子２２が設けられている。リード端子２２は、導電性の部材であり、巻線部２０から導出されたワイヤ２１が接続されている。リード端子２２は、ワイヤ２１の始端２１ａと終端２１ｂに対応させて一対設けられている。本実施形態のリード端子２２は、クランク形状の板状体である。リード端子２２の一端は、フランジ１３の外縁のうち、略Ｕ字形以外の直線状の平坦面に取り付けられ、全体が筒状体１１の軸に直交する方向に突出している。 A lead terminal 22 is provided on the flange 13. The lead terminal 22 is a conductive member, and is connected to a wire 21 derived from the winding part 20. The lead terminal 22 is provided in a pair corresponding to the start end 21 a and the end 21 b of the wire 21. The lead terminal 22 of the present embodiment is a crank-shaped plate. One end of the lead terminal 22 is attached to a linear flat surface other than the substantially U-shaped portion of the outer edge of the flange 13, and the whole protrudes in a direction orthogonal to the axis of the tubular body 11.
　フランジ１３には、貫通孔１３ｄが形成されている。貫通孔１３ｄは、筒状体１１の内径と略同径の円形である。これにより、筒状体１１の内側は、外部と連通している。さらに、フランジ１３には、貫通孔１３ｄの周囲がリング状に隆起した突出部１３ｅが設けられている。 貫通 A through hole 13d is formed in the flange 13. The through hole 13d is a circle having substantially the same diameter as the inner diameter of the tubular body 11. Thus, the inside of the tubular body 11 communicates with the outside. Further, the flange 13 is provided with a protrusion 13e in which the periphery of the through hole 13d is raised in a ring shape.
　ボビン１０は、絶縁性の材料により筒状体１１、蓋体１２、フランジ１３が一体的に形成されている。つまり、ボビン１０は筒状体１１、蓋体１２、フランジ１３が共通の材料により継ぎ目なく連続して形成されている。ボビン１０の材料としては、例えば、ＰＰＳ樹脂を用いることができる。 The bobbin 10 has a cylindrical body 11, a lid 12, and a flange 13 integrally formed of an insulating material. That is, the bobbin 10 has the tubular body 11, the lid body 12, and the flange 13 formed of a common material without any seam. As a material of the bobbin 10, for example, a PPS resin can be used.
（巻線部）
　巻線部２０は、筒状体１１の外周に巻装されたワイヤ２１により形成される。ワイヤ２１は、導電性の細線である。ワイヤ２１は、例えば、エナメルで被覆された銅線である。ワイヤ２１の巻き始めの端部である始端２１ａは、巻線部２０から導出されて一方の切欠１３１ａを通り、溝１３ｃ内に沿って延びて、一方のリード端子２２に接続されている。ワイヤ２１の巻き終わりである終端２１ｂは、巻線部２０から導出されて他方の切欠１３１ａを通り、他方のリード端子２２に接続されている。ワイヤ２１とリード端子２２とは、例えば、抵抗溶接を利用したヒュージングにより結線される。ヒュージングは、通電端子に設けられた突起等でマグネットワイヤを挟み、抵抗溶接時の発熱によりマグネットワイヤの被覆を溶かしながらマグネットワイヤと通電端子との結線を行う手法である。 (Winding part)
The winding part 20 is formed by a wire 21 wound around the outer periphery of the tubular body 11. The wire 21 is a conductive thin wire. The wire 21 is, for example, a copper wire coated with enamel. The starting end 21a, which is the end of the winding start of the wire 21, is drawn out of the winding part 20, passes through one notch 131a, extends along the groove 13c, and is connected to one lead terminal 22. The terminal end 21b, which is the end of the winding of the wire 21, is led out of the winding part 20, passes through the other notch 131a, and is connected to the other lead terminal 22. The wire 21 and the lead terminal 22 are connected, for example, by fusing using resistance welding. Fusing is a technique in which a magnet wire is sandwiched between projections or the like provided on a current-carrying terminal, and connection between the magnet wire and the current-carrying terminal is performed while melting the coating of the magnet wire by heat generated during resistance welding.
（ケース）
　ケース３０は、図１及び図２に示すように、筒状体１１及び巻線部２０を収容する容器である。ケース３０は、図４に示すように、ボビン１０の蓋体１２によって封止された開口３１と、充填材Ｐを注入するための注入口３２を有する。本実施形態のケース３０は、全体として略円筒形状である。ケース３０の軸方向の一端が開口３１となっている。開口３１により、ケース３０の一端の全体が開放されている。開口３１の縁部には、蓋体１２の嵌合部１２ｂの段差に合致する嵌合部３１ａが形成されている。開口３１と蓋体１２とは略同一の径であり、互いの嵌合部１２ｂ、３１ａが、エポキシ等の接着剤を介して嵌り合わされて接着されることにより封止されている。これにより、巻線部２０を収容するケース３０の一部を、ボビン１０の蓋体１２が兼用している。 (Case)
The case 30 is a container for accommodating the tubular body 11 and the winding part 20, as shown in FIGS. As shown in FIG. 4, the case 30 has an opening 31 sealed by the lid 12 of the bobbin 10 and an injection port 32 for injecting the filler P. The case 30 of the present embodiment has a substantially cylindrical shape as a whole. One end in the axial direction of the case 30 is an opening 31. The opening 31 opens one end of the case 30 entirely. At the edge of the opening 31, there is formed a fitting portion 31a that matches the step of the fitting portion 12b of the lid 12. The opening 31 and the lid 12 have substantially the same diameter, and the fitting portions 12b and 31a are fitted and bonded via an adhesive such as epoxy to be sealed. Thereby, the lid 12 of the bobbin 10 also serves as a part of the case 30 that accommodates the winding part 20.
　一方、ケース３０の他端は、軸に直交する平板状の端面３３によって塞がれている。この端面３３は、ケース３０に収容されたボビン１０のフランジ１３側に対応している。端面３３には、貫通孔３３ａが形成されている。貫通孔３３ａには、ボビン１０のフランジ１３に形成された突出部１３ｅの外縁が嵌っている。 On the other hand, the other end of the case 30 is closed by a flat end surface 33 orthogonal to the axis. This end face 33 corresponds to the flange 13 side of the bobbin 10 housed in the case 30. A through hole 33 a is formed in the end face 33. The outer edge of the protrusion 13e formed on the flange 13 of the bobbin 10 fits into the through hole 33a.
　ケース３０の曲面状の側面３４には、コネクタ収容部３５が設けられている。コネクタ収容部３５は、コネクタ３６を収容した扁平円筒形状である。コネクタ３６は、一対の板状の導電性部材である。一対のコネクタ３６のそれぞれの一端は、図４に示すように、一対のリード端子２２に一体に接続され、リード端子２２を延長する方向に突出している。コネクタ３６は、その先端が露出するように、コネクタ収容部３５内に埋め込まれて支持されている。 コ ネ ク タ A connector housing 35 is provided on the curved side surface 34 of the case 30. The connector housing 35 has a flat cylindrical shape in which the connector 36 is housed. The connector 36 is a pair of plate-shaped conductive members. One end of each of the pair of connectors 36 is integrally connected to the pair of lead terminals 22 as shown in FIG. 4 and protrudes in a direction in which the lead terminals 22 are extended. The connector 36 is embedded and supported in the connector accommodating portion 35 so that the tip is exposed.
　注入口３２とコネクタ収容部３５は、ケース３０の側面３４に筒状体１１の軸と平行な方向に並んで配置されている。つまり、注入口３２とコネクタ収容部３５は、軸方向に隣接した位置に設けられている。 The injection port 32 and the connector accommodating portion 35 are arranged on the side surface 34 of the case 30 in a direction parallel to the axis of the tubular body 11. That is, the injection port 32 and the connector accommodating portion 35 are provided at positions adjacent to each other in the axial direction.
　ケース３０は、筒状体１１の軸から離れる方向に膨出して容積を拡大した膨出部３７を有している。そして、注入口３２は膨出部３７に設けられている。本実施形態の膨出部３７は、側面３４から突出した角筒形状により囲まれた領域であり、この端部の開口が長方形状の注入口３２となっている。この膨出部３７は、ヒケによる巻線部２０の周囲の未充填箇所の発生を防止するために設けられている。ヒケは、充填材Ｐが硬化後、温度が低下する際に体積が減少する現象である。このため、膨出部３７の容積は、ヒケによる体積の減少を補う量以上の充填材Ｐが収容可能な大きさとなっている。 The case 30 has a bulged portion 37 bulged in a direction away from the axis of the tubular body 11 to increase the volume. The inlet 32 is provided in the bulging portion 37. The bulging portion 37 of the present embodiment is a region surrounded by a rectangular tube shape protruding from the side surface 34, and the opening at this end is the rectangular inlet 32. The bulging portion 37 is provided to prevent an unfilled portion around the winding portion 20 due to sink marks. The sink is a phenomenon in which the volume decreases when the temperature decreases after the filler P is cured. For this reason, the volume of the bulging portion 37 is large enough to accommodate the filler P in an amount equal to or more than the volume that compensates for the decrease in volume due to sink.
　さらに、本実施形態のケース３０は、図１に示すように、第１のケース３０Ａと第２のケース３０Ｂの分割構造となっている。第１のケース３０Ａと第２のケース３０Ｂは、円筒形状を軸方向の平面で切断することにより分割された形状である。 Furthermore, as shown in FIG. 1, the case 30 of the present embodiment has a divided structure of a first case 30A and a second case 30B. The first case 30A and the second case 30B have a shape that is divided by cutting a cylindrical shape along a plane in the axial direction.
　第１のケース３０Ａと第２のケース３０Ｂは、それぞれ蒲鉾形を有している。但し、第１のケース３０Ａと第２のケース３０Ｂを分ける切断平面は、軸を越えてリード端子２２側、つまり、コネクタ収容部３５側、注入口３２側に寄っている。このため、第１のケース３０Ａは、第２のケース３０Ｂよりも、軸に直交する方向の断面が大きくなっている。これにより、第１のケース３０Ａは、筒状体１１及び巻線部２０の大部分を収容する。第２のケース３０Ｂは、筒状体１１及び巻線部２０のリード端子２２側の一部を収容する。 The first case 30A and the second case 30B each have a semi-cylindrical shape. However, the cutting plane separating the first case 30A and the second case 30B is closer to the lead terminal 22 side, that is, to the connector accommodating portion 35 side and the injection port 32 side, beyond the axis. Therefore, the first case 30A has a larger cross section in the direction perpendicular to the axis than the second case 30B. Thereby, the first case 30 </ b> A accommodates most of the cylindrical body 11 and the winding part 20. The second case 30B accommodates a part of the cylindrical body 11 and the winding part 20 on the lead terminal 22 side.
　第１のケース３０Ａと第２のケース３０Ｂの端部は、嵌合部３８により嵌め合わされて、エポキシ等の樹脂により接着されて封止される。つまり、第１のケース３０Ａと第２のケース３０Ｂの縁部には、それぞれ互いに嵌り合う段差による嵌合部３８Ａ、３８Ｂが形成されていて、これが合致するように接着剤を介して貼り合わされる。 (4) The ends of the first case 30A and the second case 30B are fitted by the fitting portion 38, and are bonded and sealed with a resin such as epoxy. In other words, fitting portions 38A and 38B are formed at the edges of the first case 30A and the second case 30B by steps that fit each other, and are bonded to each other via an adhesive so that they match. .
　第１のケース３０Ａは、端面３３Ａ、側面３４Ａが一体的に形成されている。つまり、第１のケース３０Ａは、共通の材料により継ぎ目なく連続して形成されている。第２のケース３０Ｂは、端面３３Ｂ、側面３４Ｂ、コネクタ収容部３５、膨出部３７が一体的に形成されている。つまり、第２のケース３０Ｂは、共通の材料により継ぎ目なく連続して形成されている。ケース３０の材料としては、例えば、ＰＰＳ樹脂を用いることができる。 端 The first case 30A has an end face 33A and a side face 34A integrally formed. That is, the first case 30A is continuously formed of a common material without any seams. In the second case 30B, an end surface 33B, a side surface 34B, a connector housing portion 35, and a bulging portion 37 are integrally formed. That is, the second case 30 </ b> B is continuously formed of a common material without any seams. As a material of the case 30, for example, a PPS resin can be used.
（充填材）
　充填材Ｐは、絶縁性の樹脂である。充填材Ｐとしては、エポキシ等の熱硬化性樹脂を用いることができる。充填材Ｐは、注入口３２から注入され、巻線部２０の周囲に充填されて硬化されている。 (Filling material)
The filler P is an insulating resin. As the filler P, a thermosetting resin such as epoxy can be used. The filler P is injected from the injection port 32, is filled around the winding part 20, and is hardened.
　このような充填材Ｐの充填は、例えば、以下のように行われる。まず、第１のケース３０Ａと第２のケース３０Ｂとの間に筒状体１１、巻線部２０及びフランジ１３が収容されるように挟み、互いの嵌合部３８Ａ、３８Ｂが合致するように接着して封止する。このとき、蓋体１２の嵌合部１２ｂと第１のケース３０Ａ、第２のケース３０Ｂの嵌合部３１ａも、合致するように接着して封止する。これにより、コネクタ収容部３５内のコネクタ３６は、それぞれリード端子２２に接続される。また、フランジ１３の張出縁１３１の外周は、ケース３０の内壁に接する。但し、張出縁１３１の外周とケース３０の内壁との間は完全には封止されず、充填材Ｐが流動する隙間を含んでいる。 充填 The filling of the filler P is performed, for example, as follows. First, the cylindrical body 11, the winding part 20, and the flange 13 are sandwiched between the first case 30A and the second case 30B so that the fitting parts 38A, 38B match each other. Glue and seal. At this time, the fitting portion 12b of the lid 12 and the fitting portion 31a of the first case 30A and the second case 30B are also bonded and sealed so as to match. Thereby, the connectors 36 in the connector accommodating portions 35 are respectively connected to the lead terminals 22. Further, the outer periphery of the projecting edge 131 of the flange 13 contacts the inner wall of the case 30. However, the space between the outer periphery of the overhanging edge 131 and the inner wall of the case 30 is not completely sealed, and includes a gap through which the filler P flows.
　このように筒状体１１及び巻線部２０を収容したケース３０を真空槽内に収容し、減圧装置によって真空槽内を減圧してケース３０内の空気を抜き取る。そして、重力が働く方向とは逆の方向に向けた注入口３２から、充填材Ｐを注入する。充填材Ｐの注入量は、ヒケによる体積の減少を考慮して、膨出部３７内を満たす量とする。充填材Ｐは、ケース３０内の巻線部２０の周囲の空間内と、ワイヤ２１間の隙間を覆うように流れ込み、硬化している。 (5) The case 30 containing the tubular body 11 and the winding part 20 is housed in a vacuum chamber, and the pressure in the vacuum chamber is reduced by a pressure reducing device to remove the air in the case 30. Then, the filler P is injected from the injection port 32 directed in the direction opposite to the direction in which gravity acts. The injection amount of the filler P is set to an amount that fills the bulging portion 37 in consideration of a decrease in volume due to sink. The filler P flows into the space around the winding part 20 in the case 30 and the gap between the wires 21 and is hardened.
　注入口３２から巻線部２０に向かって流れ込んだ充填材Ｐは、ケース３０の内壁に接しているフランジ１３の張出縁１３１により、溝１３ｃ内への流入が一部阻害されるが、張出縁１３１とケース３０の内壁との一部の隙間を介して、溝１３ｃ内に流入する。さらに、充填材Ｐは、切欠１３１ａを介して、溝１３ｃ内への流入が促進されるので、溝１３ｃ内のワイヤ２１の周囲も充填材Ｐにより充填されて硬化している。つまり、充填材Ｐは、ケース３０内の巻線部２０側から切欠１３１ａを介して溝１３ｃ内にかけて充填されている。 The filling material P flowing from the inlet 32 toward the winding portion 20 is partially prevented from flowing into the groove 13 c by the projecting edge 131 of the flange 13 in contact with the inner wall of the case 30. It flows into the groove 13c through a partial gap between the outer edge 131 and the inner wall of the case 30. Further, since the flow of the filler P into the groove 13c is promoted through the notch 131a, the periphery of the wire 21 in the groove 13c is filled with the filler P and hardened. That is, the filler P is filled from the winding part 20 side in the case 30 into the groove 13c through the notch 131a.
［電磁弁の構成例］
　以上のようなモールドコイル１００は、例えば、図５に示すように、磁路を形成するハウジング２００とともに、弁本体３００に組み付けられて、電磁弁を構成する。弁本体３００は、図示しない吸引子、プランジャ、弁体及びオリフィスを備える。吸引子は、磁性材料からなり、筒状体１１の内部に挿入される。プランジャは、磁性材料からなる中空の棒状体であり、筒状体１１の内部に摺動自在に配置される。弁体は、プランジャ先端に固定される。つまり、プランジャの一端は吸引子側に位置し、他端には弁体が固定される。オリフィスは、弁体との間で流路の開閉を行う。ワイヤ２１に通電することにより巻線部２０が励磁され、プランジャが吸引子側に引き付けられると弁体が移動して、オリフィスとの間で流路の開度が調整される。また、ワイヤ２１への通電を停止すると、例えば、吸引子とプランジャ間に設けられたバネ等の付勢力で弁体が移動して、オリフィスとの間で流路を閉じる。このような電磁弁は、例えば、コンプレッサ駆動弁として用いられる。 [Configuration example of solenoid valve]
The above-described molded coil 100 is assembled to a valve body 300 together with a housing 200 forming a magnetic path, for example, as shown in FIG. 5, to form an electromagnetic valve. The valve body 300 includes a suction element (not shown), a plunger, a valve element, and an orifice. The suction element is made of a magnetic material, and is inserted into the cylindrical body 11. The plunger is a hollow rod-shaped body made of a magnetic material, and is slidably disposed inside the cylindrical body 11. The valve body is fixed to the tip of the plunger. That is, one end of the plunger is located on the suction element side, and the valve body is fixed to the other end. The orifice opens and closes a flow path with the valve body. When the wire 21 is energized by energizing the wire 21 and the plunger is attracted to the suction element side, the valve element moves and the opening of the flow path between the orifice and the orifice is adjusted. When the power supply to the wire 21 is stopped, for example, the valve element moves by the urging force of a spring or the like provided between the suction element and the plunger, and closes the flow path between the valve element and the orifice. Such an electromagnetic valve is used, for example, as a compressor drive valve.
［作用効果］
（１）以上のような本実施形態は、筒状体１１の一端に、筒状体１１が拡径された蓋体１２を有するボビン１０と、筒状体１１の外周に巻装されたワイヤ２１により形成された巻線部２０と、筒状体１１及び巻線部２０を収容するケース３０と、ケース３０内に充填された絶縁性の充填材Ｐと、を有する。そして、ケース３０は、蓋体１２によって封止された開口３１と、充填材Ｐを注入するための注入口３２と、を有する。 [Effects]
(1) In the present embodiment as described above, the bobbin 10 having the lid 12 in which the diameter of the cylindrical body 11 is increased at one end of the cylindrical body 11 and the wire wound around the outer circumference of the cylindrical body 11 The case 30 includes the winding part 20 formed by the base member 21, the cylindrical body 11 and the winding part 20, and an insulating filler P filled in the case 30. The case 30 has an opening 31 sealed by the lid 12 and an inlet 32 for injecting the filler P.
　このため、金型等の冶具を用いずに、ケース３０を用いて充填材Ｐを充填し、充填材Ｐの硬化後は、ケース３０をそのままモールドコイル１００の外装とすることができる。これにより、充填材Ｐによるモールドのために、高価な金型等の冶具を使用する必要がなく、低コストで製造できる。また、冶具の取り外し作業が不要となるので、量産がしやすい。 Therefore, the filling material P is filled using the case 30 without using a jig such as a mold, and after the filling material P is cured, the case 30 can be used as an exterior of the mold coil 100 as it is. Accordingly, it is not necessary to use an expensive jig such as a mold for molding with the filler P, and the device can be manufactured at low cost. In addition, since there is no need to remove the jig, mass production is easy.
　また、ケース３０にボビン１０の蓋体１２により封止される開口３１を設けることにより、ケース３０の壁面が減少するため、ケース３０の形成がし易くなるが、ケース３０自体は変形しやすくなる。しかし、開口３１は、ボビン１０の蓋体１２によって封止されて支持されているので、十分な強度が確保される。このため、外部から力が加わった場合や、充填材Ｐの注入時にかかる圧力や充填材Ｐの硬化時のヒケによる変形を防止できる。 Further, by providing the case 30 with the opening 31 sealed by the lid 12 of the bobbin 10, the wall surface of the case 30 is reduced, so that the case 30 is easily formed, but the case 30 itself is easily deformed. . However, since the opening 31 is sealed and supported by the lid 12 of the bobbin 10, sufficient strength is secured. For this reason, it is possible to prevent deformation due to external force, pressure applied during filling of the filler P, or sink due to curing of the filler P.
（２）筒状体１１の他端に、筒状体１１が拡径され、ケース３０の内壁に接する部分を有するフランジ１３を有し、フランジ１３の周面には、巻線部２０から導出されたワイヤ２１が沿う溝１３ｃが設けられている。溝１３ｃは、ケース３０内の巻線部２０側と、溝１３ｃ内とを連通し、ワイヤ２１が挿通された切欠１３１ａを有している。充填材Ｐは、ケース３０内の巻線部２０側から切欠１３１ａを介して溝１３ｃ内にかけて充填されている。 (2) At the other end of the tubular body 11, the tubular body 11 has a flange 13 whose diameter is enlarged and has a portion that is in contact with the inner wall of the case 30. The groove 13c along which the formed wire 21 is provided is provided. The groove 13c communicates between the winding portion 20 side in the case 30 and the inside of the groove 13c, and has a notch 131a into which the wire 21 is inserted. The filler P is filled from the winding part 20 side in the case 30 into the groove 13c through the notch 131a.
　このため、ケース３０の内壁に接するフランジ１３によっても、ケース３０の強度が確保され、充填材Ｐの注入時にケース３０にかかる圧力や硬化時のヒケによる変形を防止できる。また、巻線部２０から導出されたワイヤ２１が沿う溝１３ｃにも、切欠１３１ａを介して充填材Ｐが流入して硬化させることができる。このため、外部との接続のために導出されたワイヤ２１の絶縁が確保されるとともに、巻線部２０側の充填材Ｐのヒケ等による圧力で断線することが防止される。 た め For this reason, the strength of the case 30 is also ensured by the flange 13 in contact with the inner wall of the case 30, and deformation due to pressure applied to the case 30 at the time of injecting the filler P or sink at the time of curing can be prevented. Also, the filler P can flow into the groove 13c along which the wire 21 led out from the winding part 20 passes through the notch 131a, and is hardened. Therefore, the insulation of the wire 21 led out for connection to the outside is ensured, and the wire 21 is prevented from being broken by the pressure due to sink of the filler P on the winding part 20 side.
（３）溝１３ｃは、フランジ１３の周面に沿って張り出した一対の対向する張出縁１３１、１３２に囲まれて画成されている。巻線部２０側の張出縁１３１は、他方の張出縁１３２よりも外側に張り出していることにより、ケース３０の内壁に接する部分を有している。他方の張出縁１３２の周面は、ケース３０の内壁から離隔している。このため、張出縁１３１と張出縁１３２との張り出し量の差によって、溝１３ｃを構成する壁面の一部が減少するので、充填材Ｐを溝１３ｃ内に流れ込み易くすることができる。 (3) The groove 13c is defined by being surrounded by a pair of opposed protruding edges 131, 132 protruding along the peripheral surface of the flange 13. The projecting edge 131 on the winding part 20 side has a portion in contact with the inner wall of the case 30 by projecting outside the other projecting edge 132. The peripheral surface of the other overhanging edge 132 is separated from the inner wall of the case 30. For this reason, a part of the wall surface constituting the groove 13c is reduced due to the difference in the amount of overhang between the overhanging edge 131 and the overhanging edge 132, so that the filler P can easily flow into the groove 13c.
（４）ケース３０には、筒状体１１の軸から離れる方向に膨出した膨出部３７を有し、注入口３２は、膨出部３７に設けられている。このため、充填材Ｐを、膨出部３７内に達する量まで充填することにより、ヒケによる未充填箇所の発生を防止できる。 (4) The case 30 has a bulging portion 37 bulging in a direction away from the axis of the tubular body 11, and the inlet 32 is provided in the bulging portion 37. For this reason, by filling the filler P to an amount reaching the inside of the bulging portion 37, it is possible to prevent the occurrence of an unfilled portion due to sink.
（５）巻線部２０から導出されたワイヤ２１が接続されたリード端子２２と、リード端子２２に接続されるコネクタ３６を収容したコネクタ収容部３５と、を有する。コネクタ収容部３５と注入口３２とは、ケース３０の側面に、筒状体１１の軸と平行な方向に並んで配置されている。このため、開口部分である注入口３２が膨出部３７により膨出していても、膨出部３７とコネクタ収容部３５とが、ケース３０の周方向に異なる位置に設けられている場合に比べて、膨出部３７が邪魔にならない。 (5) It has a lead terminal 22 to which the wire 21 derived from the winding part 20 is connected, and a connector accommodating portion 35 accommodating a connector 36 connected to the lead terminal 22. The connector accommodating portion 35 and the injection port 32 are arranged on the side surface of the case 30 in a direction parallel to the axis of the tubular body 11. For this reason, even if the injection port 32 which is an opening portion is bulged by the bulging portion 37, as compared with a case where the bulging portion 37 and the connector accommodating portion 35 are provided at different positions in the circumferential direction of the case 30. Therefore, the bulging portion 37 does not interfere.
［第２の実施形態］
　本発明の第２の実施形態を、図６の分解斜視図、図７の外観斜視図を参照して説明する。なお、第１の実施形態と同様の構成部分は、説明を省略又は簡略化する。本実施形態のボビン１０及び巻線部２０は、第１の実施形態と同様である。 [Second embodiment]
A second embodiment of the present invention will be described with reference to an exploded perspective view of FIG. 6 and an external perspective view of FIG. The description of the same components as those of the first embodiment is omitted or simplified. The bobbin 10 and the winding part 20 of the present embodiment are the same as those of the first embodiment.
［構成］
　本実施形態のケース３０の注入口３２は、図６に示すように、ケース３０の蓋体１２によって封止された開口３１とは反対側に設けられている。ケース３０は円筒形状を有し、注入口３２は、少なくともケース３０の内径の全長に亘る大きさを有している。例えば、注入口３２は、ケース３０の開口３１と反対側の端部の全体が開放されることにより構成されている。また、コネクタ収容部３５は、ケース３０とは別体として構成されている。注入口３２の一部には、コネクタ収容部３５が搭載される凹形状の受部３２ａが設けられている。 [Constitution]
As shown in FIG. 6, the inlet 32 of the case 30 of the present embodiment is provided on the side opposite to the opening 31 sealed by the lid 12 of the case 30. The case 30 has a cylindrical shape, and the inlet 32 has a size that extends at least over the entire inner diameter of the case 30. For example, the injection port 32 is configured by opening the entire end of the case 30 opposite to the opening 31. The connector housing 35 is configured separately from the case 30. A part of the inlet 32 is provided with a concave receiving portion 32a on which the connector accommodating portion 35 is mounted.
　ケース３０には、注入口３２側から筒状体１１、巻線部２０及び蓋体１２が挿入されて、蓋体１２が開口３１に接着剤により接着されて封止される。蓋体１２の直径はケース３０の内径よりも僅かに大きい程度の寸法であるため、蓋体１２又はケース３０が弾性変形し、ケース３０にボビン１０を組み付けることができる。コネクタ収容部３５は、コネクタ３６に、リード端子２２が接続されるように、受部３２ａに搭載されて接着剤で接着されて固定される。 The cylindrical body 11, the winding part 20, and the lid 12 are inserted into the case 30 from the injection port 32 side, and the lid 12 is adhered to the opening 31 with an adhesive and sealed. Since the diameter of the lid 12 is slightly larger than the inner diameter of the case 30, the lid 12 or the case 30 is elastically deformed, and the bobbin 10 can be assembled to the case 30. The connector accommodating portion 35 is mounted on the receiving portion 32a and fixed by bonding with an adhesive so that the lead terminal 22 is connected to the connector 36.
　このように、ケース３０に筒状体１１、巻線部２０及びフランジ１３が挿入された状態では、図７に示すように、フランジ１３と注入口３２との間に、膨出部３７が設けられている。つまり、膨出部３７は、ケース３０が、筒状体１１から離れる方向に膨出して容積を拡大した部分となっている。本実施形態の膨出部３７は、ケース３０の軸方向の長さよりも、ボビン１０の軸方向の長さが短くなっていることにより、フランジ１３と注入口３２との間に形成される領域である。 In the state where the tubular body 11, the winding part 20, and the flange 13 are inserted into the case 30, the bulging part 37 is provided between the flange 13 and the inlet 32 as shown in FIG. Have been. In other words, the bulging portion 37 is a portion in which the case 30 bulges away from the tubular body 11 to increase the volume. The bulging portion 37 of the present embodiment has a region formed between the flange 13 and the inlet 32 because the axial length of the bobbin 10 is shorter than the axial length of the case 30. It is.
　充填材Ｐは、図７に示すように、筒状体１１の内部に円柱形状の中子Ｍを挿入した状態で、注入口３２から注入される。充填材Ｐは、フランジ１３上に滴下されてフランジ１３の外縁に広がって行き、張出縁１３２から溝１３ｃ内に流入して、張出縁１３１の外縁の切欠１３１ａを通過して、巻線部２０側に流入する。また、充填剤Ｐは、張出縁１３１の外縁と、ケース３０の内壁との間の隙間を通過して、巻線部２０側に流入する。これにより、巻線部２０の周囲及びワイヤ２１の隙間に充填材Ｐが充填される。注入する充填材Ｐの量は、膨出部３７内を満たす量とする。充填材Ｐが硬化した後に、中子Ｍを抜き取ることにより、筒状体１１の内部の空間を開放する。 As shown in FIG. 7, the filler P is injected from the injection port 32 with the cylindrical core M inserted inside the cylindrical body 11. The filler P is dropped on the flange 13 and spreads to the outer edge of the flange 13, flows into the groove 13 c from the overhanging edge 132, passes through the notch 131 a on the outer edge of the overhanging edge 131, and It flows into the part 20 side. In addition, the filler P flows through the gap between the outer edge of the overhanging edge 131 and the inner wall of the case 30 and flows into the winding part 20 side. Thereby, the filler P is filled around the winding part 20 and the gap between the wires 21. The amount of the filler P to be injected is an amount that fills the inside of the bulging portion 37. After the filling material P has hardened, the core M is extracted to open the space inside the tubular body 11.
［作用効果］
　本実施形態は、注入口３２は、ケース３０の蓋体１２によって封止された開口３１とは反対側に設けられている。このため、注入口３２から注入された充填材Ｐは、筒状体１１の軸方向に沿う直線状に流れるので、充填されやすい。また、注入口３２は、少なくともケース３０の内径の全長に亘る大きさを有しているので、短時間で多くの充填材Ｐを流入させることができ、注型の効率が向上する。本実施形態では、注入口３２は、ケース３０の開口３１と反対側の端部の全体が開放されることにより構成されているので、大きな開口となっていて、充填材Ｐを注入しやすい。さらに、充填材Ｐを、膨出部３７内に達する量まで充填することにより、ヒケによる未充填箇所の発生を防止できる。 [Effects]
In the present embodiment, the inlet 32 is provided on the side of the case 30 opposite to the opening 31 sealed by the lid 12. For this reason, the filler P injected from the injection port 32 flows linearly along the axial direction of the cylindrical body 11 and is easily filled. In addition, since the injection port 32 has a size that extends at least over the entire length of the inner diameter of the case 30, a large amount of the filler P can flow in a short time, and casting efficiency is improved. In the present embodiment, since the injection port 32 is configured by opening the entire end of the case 30 opposite to the opening 31, the injection port 32 has a large opening, and the filler P is easily injected. Further, by filling the filler P to an amount that reaches the inside of the bulging portion 37, occurrence of an unfilled portion due to sink can be prevented.
［第３の実施形態］
　本発明の第３の実施形態を、図８の分解斜視図、図９の外観斜視図を参照して説明する。なお、第１の実施形態と同様の構成部分は、説明を省略又は簡略化する。本実施形態のボビン１０の蓋体１２は、リード端子２２側、つまりワイヤ２１の引き出し側が略半円形の半円部１２ｃ、リード端子２２と筒状体１１を挟んで反対側が、長方形状に突出した方形部１２ｄを有する。これにより、蓋体１２の外縁は、略Ｕ字形を有している。その他のボビン１０及び巻線部２０の構成は、第１の実施形態と同様である。 [Third Embodiment]
A third embodiment of the present invention will be described with reference to an exploded perspective view of FIG. 8 and an external perspective view of FIG. The description of the same components as those of the first embodiment is omitted or simplified. The lid 12 of the bobbin 10 according to the present embodiment has a semicircular portion 12c having a substantially semicircular shape on the lead terminal 22 side, that is, the wire 21 withdrawal side, and a rectangular shape protruding on the opposite side across the lead terminal 22 and the cylindrical body 11. It has a rectangular portion 12d. Thus, the outer edge of the lid 12 has a substantially U shape. Other configurations of the bobbin 10 and the winding unit 20 are the same as those of the first embodiment.
　また、本実施形態の注入口３２は、ケース３０のリード端子２２とは筒状体１１を挟んで反対側に設けられている。つまり、本実施形態の注入口３２は、第１の実施形態のようなケース３０のコネクタ収容部３５側ではなく、これと反対側に設けられている。 In addition, the injection port 32 of the present embodiment is provided on the opposite side to the lead terminal 22 of the case 30 across the tubular body 11. That is, the injection port 32 of the present embodiment is provided not on the connector housing portion 35 side of the case 30 as in the first embodiment, but on the opposite side.
　注入口３２は、少なくともケース３０内の軸方向の全長に亘る大きさを有している。本実施形態では、注入口３２は、ケース３０のリード端子２２と反対側の側面の全体が開放されることにより構成されている。ここで、ケース３０は、軸に直交する方向の断面が略Ｕ字形であり、開口３１は、蓋体１２の外縁に合致して封止される形状となっている。 The injection port 32 has a size that extends at least over the entire length of the case 30 in the axial direction. In the present embodiment, the injection port 32 is configured by opening the entire side surface of the case 30 opposite to the lead terminal 22. Here, the cross section of the case 30 in a direction orthogonal to the axis is substantially U-shaped, and the opening 31 has a shape that matches the outer edge of the lid 12 and is sealed.
　ケース３０には、注入口３２から筒状体１１、巻線部２０及びフランジ１３が挿入されて、蓋体１２が開口３１に接着剤により接着されて封止される。リード端子２２は、コネクタ収容部３５内のコネクタ３６に接続される。 The cylindrical body 11, the winding part 20, and the flange 13 are inserted into the case 30 from the inlet 32, and the lid 12 is adhered to the opening 31 with an adhesive and sealed. The lead terminal 22 is connected to the connector 36 in the connector housing 35.
　このように、ケース３０に筒状体１１、巻線部２０及びフランジ１３が挿入された状態では、図９に示すように、巻線部２０と注入口３２との間に、膨出部３７が設けられている。つまり、膨出部３７は、ケース３０が、筒状体１１から離れる方向に膨出して容積を拡大した部分となっている。本実施形態の膨出部３７は、ケース３０の径方向の長さよりも、巻線部２０の径方向の長さが短くなっていることにより、巻線部２０と注入口３２との間に形成される領域である。 In this manner, in a state where the tubular body 11, the winding portion 20, and the flange 13 are inserted into the case 30, the bulging portion 37 is provided between the winding portion 20 and the injection port 32, as shown in FIG. Is provided. In other words, the bulging portion 37 is a portion in which the case 30 bulges away from the tubular body 11 to increase the volume. The bulging portion 37 of the present embodiment is configured such that the radial length of the winding portion 20 is shorter than the radial length of the case 30, so that the bulging portion 37 is located between the winding portion 20 and the injection port 32. It is a region to be formed.
　充填材Ｐは、注入口３２から注入する。充填材Ｐは、巻線部２０の周囲を流れて広がって行く。溝１３ｃに対しても、充填材Ｐが直接流れる（図８参照）。これにより、巻線部２０の周囲及びワイヤ２１の隙間に充填材Ｐが充填される。注入する充填材Ｐの量は、膨出部３７内を満たす量とする。 The filler P is injected from the injection port 32. The filler P flows around the winding part 20 and spreads. The filler P also flows directly into the groove 13c (see FIG. 8). Thereby, the filler P is filled around the winding part 20 and the gap between the wires 21. The amount of the filler P to be injected is an amount that fills the inside of the bulging portion 37.
［作用効果］
　本実施形態は、注入口３２が、筒状体１１を挟んで、ケース３０のリード端子２２とは反対側に設けられている。このため、注入口３２を、コネクタ収容部３５等に干渉されることなく、比較的大きく形成することができる。よって、短時間で多くの充填材Ｐを流入させることができ、注型の効率が向上する。例えば、注入口３２は、少なくともケース３０の軸の全長に亘る大きさを有しているので、充填材Ｐを高速に注入できる。さらに、注入口３２は、ケース３０のリード端子２２と反対側の側面の全体が開放されることにより構成されているので、より一層充填材Ｐを注入しやすい。また、溝１３ｃに対しても、充填材Ｐを直接流入させて、ワイヤ２１の周囲を確実に充填することができる。また、充填材Ｐを、膨出部３７内に達する量まで充填することにより、ヒケによる未充填箇所の発生を防止できる。 [Effects]
In the present embodiment, the injection port 32 is provided on the side of the case 30 opposite to the lead terminal 22 with the cylindrical body 11 interposed therebetween. For this reason, the injection port 32 can be formed relatively large without being interfered by the connector accommodating portion 35 or the like. Therefore, a large amount of the filler P can be flowed in a short time, and casting efficiency is improved. For example, since the inlet 32 has a size that extends at least over the entire length of the shaft of the case 30, the filler P can be injected at a high speed. Further, since the injection port 32 is formed by opening the entire side surface of the case 30 opposite to the lead terminal 22, the filler P can be injected more easily. In addition, the filler P can also flow directly into the groove 13c to reliably fill the periphery of the wire 21. Further, by filling the filler P to an amount that reaches the inside of the bulging portion 37, it is possible to prevent the occurrence of an unfilled portion due to sink marks.
［第４の実施形態］
［構成］
　本発明の第４の実施形態を、図１０の分解斜視図、図１１の外観斜視図、図１２の断面図を参照して説明する。なお、第１の実施形態と同様の構成部分は、説明を省略又は簡略化する。 [Fourth embodiment]
[Constitution]
A fourth embodiment of the present invention will be described with reference to an exploded perspective view of FIG. 10, an external perspective view of FIG. 11, and a cross-sectional view of FIG. The description of the same components as those of the first embodiment is omitted or simplified.
　本実施形態のボビン１０の蓋体１２は、筒状体１１の軸と同心の略半円形の半円部１２ｅと、リード端子２２側が略台形状に突出した台形部１２ｆを有する。これにより、蓋体１２の外縁は、先端が狭まった略Ｕ字形を有している。筒状体１１のフランジ１３に設けられたリード端子２２は、筒状体１１の軸に直交する方向に突出して、筒状体１１の軸に平行となるように蓋体１２側に屈曲されることにより、逆Ｌ字形となっている。その他のボビン１０及び巻線部２０の構成は、第１の実施形態と同様である。 The lid 12 of the bobbin 10 of the present embodiment has a semicircular semicircular portion 12e concentric with the axis of the cylindrical body 11, and a trapezoidal portion 12f whose lead terminal 22 side protrudes in a substantially trapezoidal shape. Thus, the outer edge of the lid 12 has a substantially U-shape with a narrowed tip. The lead terminal 22 provided on the flange 13 of the cylindrical body 11 projects in a direction perpendicular to the axis of the cylindrical body 11 and is bent toward the lid 12 so as to be parallel to the axis of the cylindrical body 11. Thus, the shape is inverted L-shaped. Other configurations of the bobbin 10 and the winding unit 20 are the same as those of the first embodiment.
　また、本実施形態では、リード端子２２がケース３０内から注入口３２を臨む位置に設けられている。すなわち、ケース３０は、円筒形状の側面である曲面部３４ａと、曲面部３４ａの一部が軸方向に沿って切り開かれて、平板状に延びた一対の平面部３４ｂとを有する。一対の平面部３４ｂの端辺は、間隔を空けて対向している。なお、ケース３０は、軸に直交する方向の断面が、略半円形状の半円部と、半円部に連続して略台形状に突出した台形部を形成しているため、端部が狭まった略Ｕ字形となっている。 In the present embodiment, the lead terminal 22 is provided at a position facing the injection port 32 from inside the case 30. That is, the case 30 includes a curved surface portion 34a that is a cylindrical side surface, and a pair of flat surface portions 34b that are partly cut open along the axial direction and extend in a plate shape. The ends of the pair of flat portions 34b face each other with an interval. In addition, the cross section of the case 30 in the direction perpendicular to the axis forms a semicircular portion having a substantially semicircular shape and a trapezoidal portion that protrudes in a substantially trapezoidal shape continuously from the semicircular portion. It has a narrowed U-shape.
　このようなケース３０の軸方向の一端が、ボビン１０の蓋体１２によって封止される開口３１である。開口３１は、ケース３０の軸方向の断面と相似形となっている。つまり、開口３１は、端部が狭まった略Ｕ字形状となっている。 一端 One end of the case 30 in the axial direction is the opening 31 sealed by the lid 12 of the bobbin 10. The opening 31 has a shape similar to the axial cross section of the case 30. That is, the opening 31 has a substantially U-shape with a narrowed end.
　ケース３０の軸方向の他端は、平板状の端面３３によって塞がれている。端面３３は、略半円形状の半円部３３ｂ、略台形状の台形部３３ｃを有する略Ｕ字形であり、ケース３０の軸に直交する方向の断面と相似形である。半円部３３ｂの外縁は曲面部３４ａに連続して形成されていて、台形部３３ｃの一対の斜辺は、平面部３４ｂに連続して形成されている。一対の平面部３４ｂの端辺と、これに連続した端面３３の端辺及び蓋体１２の端辺によって、長方形状の開口が形成されている。この開口が、充填材Ｐを注入するための注入口３２である。注入口３２は、少なくともケース３０内の軸方向の全長に亘る大きさを有している。但し、ケース３０の軸に直交する断面は、筒状体１１から離れる方向に行くに従って狭まっていて、注入口３２の軸方向に直交する方向は、巻線部２０の径よりも短くなっている。 他 端 The other end of the case 30 in the axial direction is closed by a flat end surface 33. The end face 33 is substantially U-shaped having a substantially semicircular semicircular portion 33b and a substantially trapezoidal trapezoidal portion 33c, and has a shape similar to a cross section in a direction orthogonal to the axis of the case 30. The outer edge of the semicircular portion 33b is formed continuously with the curved surface portion 34a, and the pair of oblique sides of the trapezoidal portion 33c is formed continuously with the flat portion 34b. A rectangular opening is formed by the edges of the pair of flat portions 34b, the edges of the end face 33 continuous with the edges, and the edge of the lid 12. This opening is an injection port 32 for injecting the filler P. The inlet 32 has a size that extends at least over the entire length in the axial direction within the case 30. However, the cross section orthogonal to the axis of the case 30 becomes narrower as going away from the cylindrical body 11, and the direction orthogonal to the axial direction of the injection port 32 is shorter than the diameter of the winding part 20. .
　注入口３２は、ケース３０内に設けられた膨出部３７に設けられている。膨出部３７は、ケース３０が、筒状体１１から離れる方向に膨出して容積を拡大した部分となっている。本実施形態の膨出部３７は、蓋体１２の台形部１２ｆ、端面３３の台形部３３ｃ、平面部３４ｂによって囲まれた領域である。この膨出部３７内に、リード端子２２が収容されている。つまり、本実施形態では、巻線部２０のワイヤ２１の引出し位置と、充填材Ｐを注入する注入位置とが共通となっている。 The injection port 32 is provided in a bulging portion 37 provided in the case 30. The bulging portion 37 is a portion in which the case 30 bulges in a direction away from the tubular body 11 to increase the volume. The bulging portion 37 of this embodiment is a region surrounded by the trapezoidal portion 12f of the lid 12, the trapezoidal portion 33c of the end surface 33, and the flat portion 34b. The lead terminal 22 is accommodated in the bulging portion 37. That is, in the present embodiment, the position where the wire 21 is pulled out of the winding portion 20 and the position where the filler P is injected are common.
　ケース３０には、リード端子２２に接続されるリード線２３を支持する支持部３９が設けられている。リード線２３は、導電性の芯線をビニール等により被覆した部材であり、巻線部２０のワイヤ２１と外部の機器とを、リード端子２２を介して接続する。支持部３９は、台形部３３ｃの注入口３２側の縁に設けられた略Ｕ字形状の切欠である。支持部３９の対向する一対の辺に対応する内壁には、端面３３と平行な溝であるガイド３９ａが形成されている。また、支持部３９の半円部３３ｂに近い辺に対応する内壁には、一対の凹部３９ｂが設けられている。 The case 30 is provided with a support portion 39 for supporting the lead wire 23 connected to the lead terminal 22. The lead wire 23 is a member in which a conductive core wire is covered with vinyl or the like, and connects the wire 21 of the winding part 20 to an external device via a lead terminal 22. The support portion 39 is a substantially U-shaped notch provided at an edge of the trapezoidal portion 33c on the side of the injection port 32. A guide 39 a, which is a groove parallel to the end face 33, is formed on an inner wall corresponding to a pair of opposite sides of the support portion 39. Further, a pair of concave portions 39b is provided on an inner wall corresponding to a side near the semicircular portion 33b of the support portion 39.
　支持部３９には、ホルダ４０が挿入されることにより、一対のリード線２３が挟み込まれて支持される。ホルダ４０は、絶縁材料からなる略直方体形状の部材である。ホルダ４０の対向する２側面には、ガイド３９ａに挿入される突出片４０ａが形成されている。また、突出片４０ａが形成された２側面とは異なる１側面には、支持部３９の凹部３９ｂに対応する一対の凹部４０ｂが形成されている。一対の凹部３９ｂのそれぞれに合わせてリード線２３を挿入し、先端の被覆を除去して露出させた芯線を、一対のリード端子２２の突出片を折り曲げて挟み込み、圧着するかしめにより、リード線２３とリード端子２２が接続される。そして、支持部３９にホルダ４０を挿入すると、凹部３９ｂと凹部４０ｂとの間に、リード線２３が挟み込まれて固定される。 ホ ル ダ By inserting the holder 40 into the support portion 39, the pair of lead wires 23 is sandwiched and supported. The holder 40 is a substantially rectangular parallelepiped member made of an insulating material. Projecting pieces 40a to be inserted into the guides 39a are formed on two opposing side surfaces of the holder 40. A pair of concave portions 40b corresponding to the concave portions 39b of the support portion 39 are formed on one side surface different from the two side surfaces on which the protruding pieces 40a are formed. The lead wire 23 is inserted in accordance with each of the pair of recesses 39b, and the core wire exposed by removing the coating on the distal end is bent by sandwiching the projecting piece of the pair of lead terminals 22 and crimped. And the lead terminal 22 are connected. When the holder 40 is inserted into the support portion 39, the lead wire 23 is sandwiched and fixed between the concave portions 39b and the concave portions 40b.
　充填材Ｐは、注入口３２から注入される。注入する充填材Ｐの量は、膨出部３７内を満たす量とする。充填材Ｐは、巻線部２０の周囲を流れて広がって行く。これにより、巻線部２０の周囲及びワイヤ２１の隙間に充填材Ｐが充填される。溝１３ｃに対しても、リード端子２２側からは、充填材Ｐが直接流れる。さらに、充填材Ｐは、切欠１３１ａを介して溝１３ｃ内に流入するので、溝１３ｃ内のワイヤ２１の周囲も充填材Ｐにより充填される。これにより、巻線部２０の周囲及びワイヤ２１の隙間に充填材Ｐが充填される。さらに、リード端子２２とリード線２３との接続部分の全体が覆われるように充填される。 The filler P is injected from the injection port 32. The amount of the filler P to be injected is an amount that fills the inside of the bulging portion 37. The filler P flows around the winding part 20 and spreads. Thereby, the filler P is filled around the winding part 20 and the gap between the wires 21. The filling material P also flows directly from the lead terminal 22 into the groove 13c. Further, since the filler P flows into the groove 13c via the notch 131a, the periphery of the wire 21 in the groove 13c is also filled with the filler P. Thereby, the filler P is filled around the winding part 20 and the gap between the wires 21. Furthermore, it is filled so as to cover the entire connection portion between the lead terminal 22 and the lead wire 23.
［電磁弁の構成例］
　以上のようなモールドコイル１００は、例えば、図１３に示すように、磁路を形成するハウジング２００とともに、弁本体３００に組み付けられて、電磁弁を構成する。電磁弁の構成は、上記の第１の実施形態と同様である。 [Configuration example of solenoid valve]
The above-described molded coil 100 is assembled to a valve body 300 together with a housing 200 forming a magnetic path, for example, as shown in FIG. The configuration of the solenoid valve is the same as in the first embodiment.
［作用効果］
　本実施形態は、リード端子２２が、ケース３０内から注入口３２を臨む領域に設けられている。つまり、巻線部２０のワイヤ２１の引出し位置と、充填材Ｐを注入する注入位置とが共通となり、開口を大きくすることができるので、注型の効率を向上させることができる。本実施形態では、注入口３２がケース３０内の軸方向の全長に亘る大きさを有しているので、より注入しやすい。一方、注入口３２の軸方向に直交する方向は、巻線部２０の径よりも短くなっているので、注入時の充填材Ｐの漏れが生じ難い。 [Effects]
In the present embodiment, the lead terminal 22 is provided in a region facing the injection port 32 from inside the case 30. That is, the position where the wire 21 is pulled out of the winding portion 20 and the position where the filler P is injected are common, and the opening can be enlarged, so that the efficiency of casting can be improved. In the present embodiment, the injection port 32 has a size that covers the entire length in the axial direction in the case 30, so that injection is easier. On the other hand, since the direction orthogonal to the axial direction of the injection port 32 is shorter than the diameter of the winding portion 20, leakage of the filler P during injection is less likely to occur.
　リード端子２２は、膨出部３７に収容されているため、膨出部３７を満たすように充填材Ｐを充填することにより、リード端子２２とリード線２３との接続部分の全体が充填される。このため、充填材Ｐの体積の減少によるリード端子２２の露出を防止できる。さらに、コネクタ収容部３５を設ける場合に比べて、ケース３０の構成を単純化できる。 Since the lead terminal 22 is accommodated in the bulging portion 37, by filling the filling material P so as to fill the bulging portion 37, the entire connection portion between the lead terminal 22 and the lead wire 23 is filled. . For this reason, exposure of the lead terminal 22 due to a decrease in the volume of the filler P can be prevented. Further, the configuration of the case 30 can be simplified as compared with the case where the connector housing portion 35 is provided.
［他の実施形態］
　本発明は、上記の実施形態に限定されるものではなく、下記に示す他の実施形態も包含する。また、本発明は、上記の実施形態及び下記の他の実施形態を全て又はいずれかを組み合わせた形態も包含する。さらに、これらの実施形態を発明の範囲を逸脱しない範囲で、種々の省略や置き換え、変更を行うことができ、その変形も本発明に含まれる。 [Other embodiments]
The present invention is not limited to the above embodiment, but includes other embodiments described below. The present invention also includes a form in which all or any of the above-described embodiments and other embodiments described below are combined. Furthermore, various omissions, replacements, and changes can be made in these embodiments without departing from the scope of the invention, and modifications thereof are also included in the invention.
　切欠１３１ａの数は、上記の態様では２つとしたが、これには限定されない。切欠１３１ａを１つとして、ワイヤ２１の始端２１ａと終端２１ｂが共通の１つの切欠１３１ａを通過するようにしてもよい。共通の１つの切欠１３１ａを形成する場合は、筒状体１１を挟んで注入口３２の逆側の位置に形成すると、充填材Ｐが溝１３ｃ内に充填されやすく好ましい。また、上記の態様のように切欠１３１ａの数を２つとする場合は、注入口３２の中心を通る断面（例えば図３のＡ－Ａ断面）に対する対称位置に２つの切欠１３１ａを形成すると充填材Ｐの流れが溝１３ｃ内で均一になるため好ましい。もちろん、切欠１３１ａを２つよりも多く形成して、充填材Ｐの流動を促進してもよい。この場合、ワイヤ２１が通過しない切欠１３１ａを含んでいてもよい。切欠１３１ａの形状は、充填材Ｐが溝１３ｃ内に流入しやすいように、ワイヤ２１の断面よりも大きく形成されていることが好ましく、例えば、Ｖ字状や矩形状に形成されていてもよい。 The number of the notches 131a is two in the above embodiment, but is not limited thereto. The notch 131a may be one, and the starting end 21a and the ending 21b of the wire 21 may pass through one common notch 131a. When one common notch 131a is formed, it is preferable that the notch 131a be formed at a position opposite to the injection port 32 with the tubular body 11 interposed therebetween, since the filler P is easily filled in the groove 13c. In the case where the number of the notches 131a is two as in the above-described embodiment, if the two notches 131a are formed at symmetrical positions with respect to a cross section passing through the center of the injection port 32 (for example, AA cross section in FIG. 3), This is preferable because the flow of P becomes uniform in the groove 13c. Of course, more than two notches 131a may be formed to promote the flow of the filler P. In this case, a notch 131a through which the wire 21 does not pass may be included. The shape of the notch 131a is preferably formed larger than the cross section of the wire 21 so that the filler P can easily flow into the groove 13c, and may be formed in a V-shape or a rectangular shape, for example. .
　上記実施形態では、モールドコイル１００が適用される電気的駆動弁を電磁弁として説明したが、これには限定されない。例えば、電気的駆動弁は、電動弁であってもよい。電磁弁は、モールドコイル１００及び巻線部２０への通電により発生した駆動力により駆動される弁体を有する。 In the above embodiment, the electrically driven valve to which the molded coil 100 is applied has been described as an electromagnetic valve, but is not limited to this. For example, the electrically driven valve may be a motor operated valve. The solenoid valve has a valve body driven by a driving force generated by energizing the molded coil 100 and the winding unit 20.
　ボビン１０の筒状体１１、巻線部２０、ケース３０の形状は、円筒形状には限定されず、楕円筒形状、角筒形状であってもよい。巻線部２０からのワイヤ２１の導出位置、リード端子２２の形状等は、上記の態様には限定されない。 形状 The shapes of the cylindrical body 11, the winding portion 20, and the case 30 of the bobbin 10 are not limited to the cylindrical shape, and may be an elliptical cylindrical shape or a rectangular cylindrical shape. The lead-out position of the wire 21 from the winding part 20, the shape of the lead terminal 22, and the like are not limited to the above embodiments.
１０　　ボビン
１１　　筒状体
１２　　蓋体
１２ａ　貫通孔
１２ｂ　嵌合部
１２ｃ　半円部
１２ｄ　方形部
１２ｅ　半円部
１２ｆ　台形部
１３　　フランジ
１３ａ　半円部
１３ｂ　台形部
１３ｃ　溝
１３ｄ　貫通孔
１３ｅ　突出部
２０　　巻線部
２１　　ワイヤ
２１ａ　始端
２１ｂ　終端
２２　　リード端子
２３　　リード線
３０　　ケース
３０Ａ　第１のケース
３０Ｂ　第２のケース
３１　　開口
３１ａ　嵌合部
３２　　注入口
３２ａ　受部
３３　　端面
３３Ａ　端面
３３Ｂ　端面
３３ａ　貫通孔
３３ｂ　半円部
３３ｃ　台形部
３４　　側面
３４Ａ　側面
３４Ｂ　側面
３４ａ　曲面部
３４ｂ　平面部
３５　　コネクタ収容部
３６　　コネクタ
３７　　膨出部
３８　　嵌合部
３８Ａ　嵌合部
３８Ｂ　嵌合部
３９　　支持部
３９ａ　ガイド
３９ｂ　凹部
４０　　ホルダ
４０ａ　突出片
４０ｂ　凹部
１００　モールドコイル
１３１　張出縁
１３１ａ　切欠
１３２　張出縁
２００　ハウジング
３００　弁本体
Ｍ　中子
Ｐ　充填材 Reference Signs List 10 bobbin 11 cylindrical body 12 lid 12a through hole 12b fitting portion 12c semicircular portion 12d square portion 12e semicircular portion 12f trapezoidal portion 13 flange 13a semicircular portion 13b trapezoidal portion 13c groove 13d through hole 13e projecting portion 20 winding Part 21 wire 21a start end 21b end 22 lead terminal 23 lead wire 30 case 30A first case 30B second case 31 opening 31a fitting part 32 inlet 32a receiving part 33 end face 33A end face 33B end face 33a through hole 33b semicircular part 33c Trapezoidal part 34 Side 34A Side 34B Side 34a Curved part 34b Flat part 35 Connector housing 36 Connector 37 Swelling part 38 Fitting part 38A Fitting part 38B Fitting part 39 Supporting part 39a Guide 39b Recess 40 Holder 40a Projecting piece 40b Recess 100 Mold coil 131 Overhanging edge 131a Notch 132 Overhanging edge 200 Housing 300 Valve body M Core P Filler

Claims (10)

  1. 　筒状体の一端に、前記筒状体が拡径された蓋体を有するボビンと、
    　前記筒状体の外周に巻装されたワイヤにより形成された巻線部と、
    　前記筒状体及び前記巻線部を収容するケースと、
    　前記ケース内に充填された絶縁性の充填材と、
    　を有し、
    　前記ケースは、
    　前記蓋体によって封止された開口と、
    　前記充填材を注入するための注入口と、
    　を有することを特徴とするモールドコイル。     A bobbin having a lid with an enlarged diameter of the cylindrical body at one end of the cylindrical body,
    A winding portion formed by a wire wound around the outer periphery of the cylindrical body,
    A case accommodating the cylindrical body and the winding portion;
    An insulating filler filled in the case,
    Has,
    The case,
    An opening sealed by the lid,
    An inlet for injecting the filler,
    A molded coil comprising:
  2. 　前記筒状体の他端に、前記筒状体が拡径され、前記ケースの内壁に接する部分を有するフランジを有し、
    　前記フランジの周面には、前記巻線部から導出された前記ワイヤが沿う溝が設けられ、
    　前記溝は、前記ケース内の前記巻線部側と前記溝内とを連通し、前記ワイヤが挿通された切欠を有し、
    　前記充填材は、前記ケース内の前記巻線部側から前記切欠を介して前記溝内にかけて充填されていることを特徴とする請求項１記載のモールドコイル。     At the other end of the cylindrical body, the cylindrical body is expanded in diameter, and has a flange having a portion in contact with the inner wall of the case,
    On the peripheral surface of the flange, a groove is provided along which the wire derived from the winding portion extends,
    The groove communicates with the winding portion side in the case and the inside of the groove, and has a notch through which the wire is inserted,
    The molded coil according to claim 1, wherein the filler is filled from the side of the winding portion in the case to the inside of the groove through the notch.
  3. 　前記溝は、前記フランジの周面に沿って張り出した一対の対向する張出縁に囲まれて画成され、
    　前記巻線部側の張出縁は、他方の張出縁よりも外側に張り出していることにより、前記ケースの内壁に接する部分を有し、
    　他方の張出縁の周面は、前記ケースの内壁から離隔していることを特徴とする請求項２記載のモールドコイル。     The groove is defined by being surrounded by a pair of opposing projecting edges projecting along a peripheral surface of the flange,
    The projecting edge on the winding part side has a portion that is in contact with the inner wall of the case by projecting outside of the other projecting edge,
    The molded coil according to claim 2, wherein a peripheral surface of the other overhanging edge is separated from an inner wall of the case.
  4. 　前記ケースには、前記筒状体から離れる方向に膨出して容積を拡大した膨出部を有し、
    　前記注入口は、前記膨出部に設けられていることを特徴とする請求項１乃至３のいずれかに記載のモールドコイル。     The case has a swelling portion that expands in a direction away from the cylindrical body to increase the volume,
    The molded coil according to any one of claims 1 to 3, wherein the inlet is provided in the bulging portion.
  5. 　前記巻線部から導出された前記ワイヤが接続されたリード端子と、
    　前記リード端子に接続されるコネクタを収容したコネクタ収容部と、
    　を有し、
    　前記コネクタ収容部と前記注入口とは、前記ケースの側面に、前記筒状体の軸と平行な方向に並んで配置されていることを特徴とする請求項１乃至４のいずれかに記載のモールドコイル。     A lead terminal to which the wire derived from the winding unit is connected,
    A connector housing portion housing a connector connected to the lead terminal;
    Has,
    The said connector accommodating part and the said injection port are arrange | positioned in the direction parallel to the axis | shaft of the said cylindrical body at the side surface of the said case, The Claim 1 characterized by the above-mentioned. Mold coil.
  6. 　前記注入口は、前記ケースの前記蓋体によって封止された前記開口とは反対側に設けられていることを特徴とする請求項１乃至４のいずれかに記載のモールドコイル。 The mold coil according to any one of claims 1 to 4, wherein the inlet is provided on a side of the case opposite to the opening sealed by the lid.
  7. 　前記巻線部から導出されたワイヤが接続されたリード端子を有し、
    　前記注入口は、前記筒状体を挟んで、前記ケースの前記リード端子とは反対側に設けられていることを特徴とする請求項１乃至４のいずれかに記載のモールドコイル。     Having a lead terminal to which a wire derived from the winding unit is connected,
    5. The molded coil according to claim 1, wherein the injection port is provided on a side of the case opposite to the lead terminal with the cylindrical body interposed therebetween. 6.
  8. 　前記巻線部から導出されたワイヤに接続されたリード端子が、前記ケース内から前記注入口を臨む領域に設けられていることを特徴とする請求項１乃至４のいずれかに記載のモールドコイル。 5. The molded coil according to claim 1, wherein a lead terminal connected to a wire led out from the winding portion is provided in a region facing the injection port from inside the case. 6. .
  9. 　前記ケースは、前記リード端子に接続され、前記ケースが外に導出されたリード線を支持する支持部を有し、
    　前記リード端子は、前記リード線との接続部分とともに前記充填材により充填されていることを特徴とする請求項８記載のモールドコイル。     The case is connected to the lead terminal, the case has a support portion for supporting a lead wire led out,
    The molded coil according to claim 8, wherein the lead terminal is filled with the filler together with a connection portion with the lead wire.
  10. 　請求項１乃至９のいずれかに記載のモールドコイルと、
    　前記巻線部への通電により発生した駆動力により駆動される弁体と、
    　を有することを特徴とする電気的駆動弁。     A molded coil according to any one of claims 1 to 9,
    A valve body driven by a driving force generated by energization of the winding portion,
    An electrically driven valve, comprising:
PCT/JP2019/022382 2018-07-11 2019-06-05 Mold coil and electrically driven valve WO2020012831A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112248330A (en) * 2020-10-12 2021-01-22 中车株洲电机有限公司 Method for casting double outlet coils at lower part of transformer and bottom plate structure
CN115654202A (en) * 2022-12-26 2023-01-31 浙江祥晋汽车零部件股份有限公司 Electromagnetic valve and production method thereof

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPS3938164Y1 (en) * 1962-10-19 1964-12-21
JPS62120307U (en) * 1986-01-23 1987-07-30
JPH0290506A (en) * 1988-09-28 1990-03-30 Toshiba Corp Manufacture of molded electrical equipment
JP2017103288A (en) * 2015-11-30 2017-06-08 パナソニックＩｐマネジメント株式会社 Electromagnet device and mobile having the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3938164Y1 (en) * 1962-10-19 1964-12-21
JPS62120307U (en) * 1986-01-23 1987-07-30
JPH0290506A (en) * 1988-09-28 1990-03-30 Toshiba Corp Manufacture of molded electrical equipment
JP2017103288A (en) * 2015-11-30 2017-06-08 パナソニックＩｐマネジメント株式会社 Electromagnet device and mobile having the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112248330A (en) * 2020-10-12 2021-01-22 中车株洲电机有限公司 Method for casting double outlet coils at lower part of transformer and bottom plate structure
CN115654202A (en) * 2022-12-26 2023-01-31 浙江祥晋汽车零部件股份有限公司 Electromagnetic valve and production method thereof
CN115654202B (en) * 2022-12-26 2023-04-07 浙江祥晋汽车零部件股份有限公司 Electromagnetic valve and production method thereof

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