JP2018164398A - Electromagnetically driven coil device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for shaping an electromagnetically driven coil device, by which a satisfactory strength and a waterproof property can be ensured.SOLUTION: A method for shaping an electromagnetically driven coil device arranged by shaping, by molding by a resin material, a stator assembly 300 and a power-supplying terminal 303 for supplying electric power to bobbins 310, 312, provided that the stator assembly 300 includes yokes 307, 308 arranged by combination of bobbins 310, 312 with stator coils 309, 311 wound therearound, an inner yoke 321 with magnetic pole teeth 320 and an outer yoke 323 with magnetic pole teeth 322 comprises the steps of: performing an inner mold shaping process on the inside of the outer yoke 323 in a state in which one ends of stator coils 309, 311 that the stator assembly 300 includes are joined to the power-supplying terminal 303; and performing an outer mold shaping process so as to cover an outer peripheral portion of the stator assembly 300 having the inner mold-shaped part 331 and the outside of the power-supplying terminal 303 after the inner mold shaping process.SELECTED DRAWING: Figure 8

Description

  The present invention relates to an electromagnetic drive coil device provided as an actuator for an electric valve or a solenoid valve, and a molding method thereof.

  Conventionally, as an example of a resin-sealed structure of this type of electromagnetic drive coil device, the following Patent Document 1 fixed a stator including a coil, a magnet rotor provided inside the stator, and the center of the magnet rotor. In a stepping motor including an output shaft, an example is described in which a coil and a magnet rotor are molded and covered with a resin casing, and a connector protruding from the casing is integrally formed in the casing.

  In Patent Document 2 below, a stator coil of a stepping motor, which is configured as a molded coil, is positioned in first and second outer yokes having a plurality of magnetic pole teeth projecting from the inner peripheral edge, and in the outer yoke. The first and second coil winding bobbins to be fitted, and the same number of magnetic pole teeth as the magnetic pole teeth of the first outer yoke and the second outer yoke protrude from the inner peripheral edge, and the openings of the first and second outer yokes First and second inner yokes that are positioned and fitted to each other, gap holding means for ensuring a mold resin inflow gap between the first inner yoke and the second inner yoke, and a gap between the gap and the magnetic pole teeth And an outer body molded with a resin so as to cover the outside of the outer yoke by molding the bobbin winding space portion, and a connector as a cylindrical socket portion projects integrally on the outer periphery of the outer body An example configured to be described is described.

JP 2010-106796 A JP-A-8-65994

  In the conventional ones of Patent Documents 1 and 2 described above, for example, when the shape or the like of the mating connector connected to the connector is changed, the molding die is set so as to correspond to the shape or the like. It is necessary to change and form. In addition, since the connector is required to be tightly fitted with the mating connector, it is necessary to strictly manage the dimensional accuracy of the mold, which causes an increase in cost.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to reliably achieve a mold for a stator assembly having a complicated structure and a connector part for which accuracy is required, and ensure sufficient strength. Another object of the present invention is to provide an electromagnetic drive coil device and a method for forming the same that ensure waterproofness.

The electromagnetic drive coil device of the present invention comprises:
An electromagnetic drive coil device formed by molding a stator assembly including a cylindrical yoke having magnetic pole teeth formed inside, a stator coil, and a power supply terminal to the stator coil,
The stator assembly formed by separate processes and a connector frame member that wraps the power supply terminal are integrated.

Furthermore, the electromagnetic drive coil device of the present invention includes:
The connector frame member is formed in advance, the connector frame member is inserted into the stator assembly, and the whole is integrally molded.

Furthermore, the electromagnetic drive coil device of the present invention includes:
The stator assembly molded in advance is used as an inner mold body, and the connector frame member is formed integrally with the inner mold body by an outer mold.

The forming method of the electromagnetic drive coil device of the present invention is as follows:
A method for forming an electromagnetic drive coil device, wherein a cylindrical yoke having magnetic pole teeth formed inside, a stator assembly including a stator coil and a power supply terminal to the stator coil is molded by resin,
The stator assembly and the connector frame member that wraps the power supply terminal are formed by separate processes to form an integrated structure.

Furthermore, the method for forming the electromagnetic drive coil device of the present invention includes:
The connector frame member is formed in advance, the connector frame member is inserted into the stator assembly, and then the whole is integrally molded.

Furthermore, the method for forming the electromagnetic drive coil device of the present invention includes:
As a first step, the stator assembly is formed by inner molding, and then, as a second step, the connector frame member is integrally formed by outer molding.

The forming method of the electromagnetic drive coil device of the present invention is as follows:
A bobbin wound with a stator coil and a yoke with magnetic pole teeth are used as a stator assembly,
A method for forming an electromagnetic drive coil device, wherein the stator assembly and a power supply terminal for supplying power to the bobbin are molded with a resin material,
In the state where one end of the stator coil provided in the stator assembly and the power supply terminal are connected, inner molding is performed,
After the inner molding, outer molding is performed so as to cover the outer peripheral portion of the stator assembly molded with the inner molding and the outside of the power supply terminal.

Furthermore, the method for forming the electromagnetic drive coil device of the present invention includes:
When performing the inner mold, the pressure holding process is performed at a low pressure,
When performing the outer mold forming, the pressure holding step is performed at a pressure higher than the low pressure holding pressure.

Furthermore, the method for forming the electromagnetic drive coil device of the present invention includes:
The resin material for performing the inner mold molding and the resin material for performing the outer mold molding are molded of the same kind of resin material.

Furthermore, the method for forming the electromagnetic drive coil device of the present invention includes:
An introduction hole is provided in a side wall of the yoke, and a resin material for performing the inner molding is introduced into the yoke through the introduction hole.

Furthermore, the method for forming the electromagnetic drive coil device of the present invention includes:
The yoke is composed of an upper yoke and a lower yoke arranged to face each other,
The upper and lower yokes are each composed of an inner yoke and an outer yoke,
When the inner molding is performed, the outer yoke is not attached to the stator assembly.

Furthermore, the method for forming the electromagnetic drive coil device of the present invention includes:
A plurality of the introduction holes are provided on the side wall of the yoke, and when performing the inner molding, the resin material is introduced into the yoke through the introduction holes provided on the side wall of the yoke,
The resin material introduced when performing the outer mold molding is introduced from one resin injection port.

An electromagnetic drive coil device according to the present invention is an electromagnetic drive coil obtained by molding a stator assembly including a cylindrical yoke having magnetic pole teeth formed therein, a stator coil, and a power supply terminal to the stator coil, with a resin. A device,
The stator assembly formed by separate processes and the connector frame member that wraps the power supply terminal are integrated into a single structure, so that a stator assembly mold having a complicated structure and a connector part mold that requires accuracy are molded. It can certainly be achieved.

  That is, the electromagnetic drive coil device according to the present invention includes a stator assembly having a complicated structure and a connector frame member that requires a precise mold by using a stator assembly and a connector frame member as separate members. Can be configured by separate molds.

  Furthermore, by preparing a plurality of types of connector frame members so as to correspond to mating connectors, various molded coil devices can be manufactured without changing the molding die.

  According to the method for forming an electromagnetic drive coil device of the present invention, the stator assembly of the electromagnetic drive coil device is molded by inner molding, and the outer peripheral portion and the like are molded by outer molding in a high pressure holding process. The stator assembly having the structure and the connector frame member requiring a precise mold can be configured by separate molds.

  Further, the molded part can prevent the liquid such as water from entering the electromagnetic drive coil device, and can prevent the formation of a void in the molded part. Therefore, it is possible to provide an electromagnetic drive coil device that ensures waterproofness and strength.

  Furthermore, since the inner mold molding is performed in a low pressure holding step, it is possible to prevent disconnection of the stator coil that is relatively easily damaged by the external pressure provided in the stator assembly. On the other hand, since the inner mold molded portion is molded in a low pressure holding process in consideration of the disconnection of the stator coil and the like, it is difficult to ensure sufficient strength due to generation of voids and the like. Although there is a concern, the outer peripheral portion of the stator assembly having such an inner mold forming portion, and the molded portion of the outer peripheral portion of the power supply terminal molded by the resin material supplied when performing the inner mold forming Since it is covered by the outer mold forming part, the inner mold forming part has a double mold structure covered by the outer mold forming part, and sufficiently increases the strength of the part molded in the low pressure holding process. be able to.

It is a perspective view which shows the electromagnetic drive coil apparatus of 1st Example of this invention. It is a perspective view which shows the components structure of the electromagnetic drive coil apparatus of 1st Example of this invention. It is a perspective view which shows the state before injection molding of the electromagnetic drive coil apparatus of 1st Example of this invention. It is sectional drawing which shows the state which mounted | wore the injection mold with the electromagnetic drive coil apparatus of 1st Example of this invention. It is a perspective view which shows another form of the electromagnetic drive coil apparatus of 1st Example of this invention. It is sectional drawing which shows the structure of the inner mold shaping | molding part of the electromagnetic drive coil apparatus of 2nd Example of this invention. It is a perspective view which shows the inner mold molding part of the electromagnetic drive coil apparatus of 2nd Example of this invention. It is sectional drawing which shows the structure after the outer mold shaping | molding of the electromagnetic drive coil apparatus of 2nd Example of this invention. It is a perspective view which shows after the outer mold shaping of the electromagnetic drive coil apparatus of 2nd Example of this invention.

  As shown in FIG. 1, the electromagnetic drive coil device 1 according to the first embodiment of the present invention is made of resin after inserting the power feeding terminals 122 and 142 (FIG. 2) into the connector frame member 30 previously formed. Mold 20 is formed. Accordingly, the stator assembly having a complicated structure and the connector frame member that requires a precise mold can be configured by separate molds.

  More specifically, as shown in FIG. 2, the connector frame member 30 is prepared as a separate member that has been previously formed in a separate process with respect to the stator assembly 100.

  The connector frame member 30 previously formed in a separate process is a resin member and includes a connector portion 31 and a coupling portion 32, and the coupling portion 32 includes an upper yoke 110 and a lower side of the stator assembly 100 described later. An end edge portion 32 a that is in close contact with the outer peripheral portion of the yoke 130 is provided. Ribs 33 are provided on the outer peripheral portion of the coupling portion 32 to improve the bondability with the mold resin in a later step.

  The connector portion 31 is provided with an outer guide portion 34, an inner guide portion 36 and a stopper projection 37 which are engaged with a mating connector (not shown). The connector 31 is required to have high accuracy with respect to the mating connector.

  The stator assembly 100 includes a cylindrical upper yoke 110 and a lower yoke 130 that are disposed to face each other.

  The upper yoke 110 includes magnetic pole teeth 112 and 114 disposed on the inner periphery, and a magnetic field is generated by a stator coil (not shown) disposed in the upper yoke 110.

  The lower yoke 130 also has a structure similar to that of the upper yoke 110, and magnetic pole teeth 132 and 134 for generating a magnetic field by a stator coil on the inner periphery.

  Introducing holes 116 and 136 for introducing the resin into the inside are provided at several locations on the outer periphery of the upper yoke 110 and the lower yoke 130, and the inside and the inside of the upper yoke 110 and the lower yoke 130 It has a complicated configuration. In the present embodiment, although not shown in particular, it is provided at four locations on the outer peripheral portion.

  In addition, laterally long notch portions 118 and 138 are formed on the outer peripheral portions of the upper yoke 110 and the lower yoke 130, and the notch portions 118 and 138 are vertically joined to form an opening, thereby forming a stator. Bobbin ends 126 and 146 extend from the inside of the assembly 100.

  The bobbin ends 126 and 146 support the power supply terminals 122 and 142 from the upper and lower stator coils via the terminal support member 150.

  The edge portion 32 a of the coupling portion 32 of the connector frame member 30 has the same arc shape as the cylindrical outer surfaces 110 a and 130 a around the opening portion by the notch openings 118 and 138, and the opening by the notch openings 118 and 138. An arcuate end edge portion 32a is in contact with the cylindrical outer surfaces 110a and 130a around the portion.

  When resin molding of the entire electromagnetic drive coil device is performed, as shown in FIG. 3, the connector frame member 30 previously molded is connected to the stator assembly 100 having a complicated structure, and then the whole is assembled. Is molded as a post-process.

  Next, injection molding and a molding method will be described. The connector frame member 30 previously formed as shown in FIG. 3 is inserted into a complex structure stator assembly 100 to form a coupling body. As shown in FIG. 4, an injection molding machine (not shown) is used. ). In this figure, the stator coil 120 installed in the upper yoke 110, the bobbin 124, the stator coil 140 installed in the lower yoke 130, the bobbin 144, and the connector frame member 30 are shown in a sectional view. .

  The mold 200 of the injection molding machine includes a lower mold 210 and an upper mold 220, and the upper mold 220 has a resin injection port 240.

  The lower mold 210 has a core 212 into which the inner periphery of the stator assembly 100 is inserted. The lower mold 210 and the upper mold 220 have a resin layer on the outer periphery of the connector frame member 30 and the stator assembly 100. A cavity 230 for forming is formed.

  In a state where the connector frame member 30 is sandwiched between the gate part 214 of the lower mold 210 and the gate part 224 of the upper mold 220, the mold resin P is injected from the resin injection port 240, and the resin is injected into the cavity 230. By injection, a resin layer is formed on the outer peripheral portion of the stator assembly 100 shown in FIG. 1, and the electromagnetic drive coil device 1 in which the resin layer and the connector frame member 30 are joined is formed.

  The injected mold resin P is introduced from the introduction holes 116 and 136 provided in the outer peripheral portions of the upper yoke 110 and the lower yoke 130, and is provided in the upper yoke 110 having a complicated structure. 120, the bobbin 124 and the stator coil 140 and the bobbin 144 provided in the lower yoke 130 are sealed with the mold resin P.

  As another form of the first embodiment of the electromagnetic drive coil device according to the present invention, as shown in FIG. 5, a connector frame member 30a different from the connector frame member 30 shown in FIGS. 20 and are molded.

  The connector frame member 30a is different from the connector frame member 30 described above in that it has a smaller appearance, but similarly has a guide portion 34a and a stopper projection 37a and is engaged with a mating connector. .

  The previously molded connector frame member 30 shown in FIG. 3 is replaced with a connector frame member 30a and connected to the stator assembly 100, and is disposed in the mold 200 of the injection molding machine shown in FIG. By injecting the mold resin P from the electromagnetic drive coil device 1, the electromagnetic drive coil device 1 a having a connector frame member 30 a different from the electromagnetic drive coil device 1 is formed.

  As shown in the electromagnetic drive coil device of the first embodiment and another form of the first embodiment, a plurality of types of connector frame members are first formed and prepared in accordance with the type of the mating connector. Thus, the outer peripheral portion of the stator assembly can be molded with resin in a state where an appropriate connector frame member is connected to the stator assembly. For that purpose, it is necessary to make the dimensions of the connector frame members 30 and 30a sandwiched between the gate part 214 of the lower mold 210 and the gate part 224 of the upper mold 220 the same. Thereby, even when the connector frame member is changed, the electromagnetic drive coil device can be manufactured without changing the injection mold. Also in this case, the stator assembly having a complicated structure and the connector frame member requiring a precise mold can be configured by separate molds.

  As described above, in the first embodiment of the present invention, the connector frame member corresponding to the type of the mating connector to be joined to the resin mold 20 is prepared in the previous molding step, so that the connector frame member is complicated. Various electromagnetic drive coil devices can be efficiently manufactured in combination with the stator assembly 100 having a simple structure.

  Since the resin that covers the stator coil and the resin that is the material of the connector frame member are produced by different molding processes, different types of resins may be used. In consideration, it is desirable to use the same resin. In that case, it is desirable to change molding conditions such as molding pressure of the connector frame member and the stator assembly. When changing the molding pressure, it is preferable to set the molding pressure of the connector frame member to a high pressure.

  The electromagnetic drive coil device 1b (FIG. 8) according to the second embodiment of the present invention includes a stator assembly 300 and a connector portion 304 that encloses a power supply terminal 303, and a connector to which a plug (not shown) is attached and detached. An outer guide portion 305 and a stopper projection 306 for locking the plug are formed on the outer peripheral surface of the portion 304.

  As shown in FIG. 7, the stator assembly 300 includes a cylindrical upper yoke 307 and a lower yoke 308 that are disposed to face each other, and corresponds to the upper yoke 307 and the lower yoke 308. The upper bobbin 310 wound with the stator coil 309 (FIG. 6) and the lower bobbin 312 wound with the stator coil 311 are provided. The upper yoke 307 and the lower yoke 308 have the same shape, and the upper bobbin 310 and the lower bobbin 312 have the same shape, and inner yokes 321 (to be described later) provided on the upper bobbin 310 and the lower bobbin 312 are arranged to face each other. Therefore, the description of the lower yoke 308 and the lower bobbin 312 is omitted, and the upper yoke 307 and the upper bobbin 310 will be described below.

  The upper yoke 307 is configured by combining an inner yoke 321 having magnetic pole teeth 320 and an outer yoke 323 having magnetic pole teeth 322, and energizing the stator coil 309 wound around the upper bobbin 310. Generate a magnetic field.

  On the outer periphery of the upper yoke 307, an introduction hole 324 (FIG. 7) for introducing the resin injected by the injection molding machine is formed. A plurality of the introduction holes 324 are provided with respect to the outer periphery of the outer yoke 323, specifically, four places.

  In addition, horizontally long notch portions 325 and 326 are formed on the outer peripheral portions of the upper yoke 307 and the lower yoke 308. Bobbin ends 327 and 328 of the bobbins 310 and 312 are provided in the notch openings 325 and 326 so as to extend outward from the stator assembly 300. The bobbin ends 327 and 328 support the power supply terminal 303 via the terminal support member 330.

  And before performing the molding which will be described later, the ends of the stator coils 309 and 311 at the bobbin ends 327 and 328 are connected to the power supply terminal 303.

  Here, a method for molding the electromagnetic drive coil device 1b by an injection molding machine in two steps of an inner mold and an outer mold using a resin material will be described.

  With the power supply terminal 303 connected to the end portions of the stator coils 309 and 311 at the bobbin end portions 327 and 328, as the first molding step, a low-temperature and low-pressure holding step is performed inside the upper and lower yokes 307 and 308. Perform inner molding. Accordingly, the resin material P is introduced into the upper and lower yokes 307 and 308 through the introduction holes 324 provided in the side walls of the upper and lower yokes 307 and 308, so that the inner mold forming portion 331 is formed inside the upper and lower yokes 307 and 308. Enclosed. At the same time, an inner mold forming portion 332 is formed by the resin material P supplied when the inner mold is formed, so as to enclose the outer peripheral portion of the power supply terminal 303 as shown in FIG. The inner mold part 332 is formed integrally with the inner mold part 331 formed on the inner side. The reason why the pressure holding step in the inner mold molding is performed at a low temperature and a low pressure is to prevent the stator coils 309 and 311 wound around the bobbins 310 and 312 from being damaged due to disconnection or the like.

  Next, as shown in FIG. 8, outer mold molding is performed by a high-temperature and high-pressure holding step using a resin material that is the same kind of resin material as that used for the inner mold molding. Accordingly, the outer peripheral portion of the stator assembly 300 having the inner mold forming portion 331 and the outer peripheral portion of the inner mold forming portion 332 enclosing the outer peripheral portion of the power supply terminal 303 are enclosed by the outer mold forming portion 333. At the same time, as shown in FIGS. 8 and 9, the portion (inner mold forming portion 332) located on the tip side of the power supply terminal 303 is formed as a connector portion 304 to which a plug can be connected by the outer mold forming portion 333. The

  The reason why the pressure holding step in the outer mold molding is performed at a high temperature and a high pressure is to prevent the generation of voids in the resin material, thereby covering the outer mold molding portion 333 and this. This is for securing sufficient strength of the bent portion and improving the dimensional accuracy of the connector portion 304. In addition, the resin material used for the inner mold molding and the resin material used for the outer mold molding may be different types of resin materials. In consideration, the same resin is used.

  As described above, according to the method for forming the electromagnetic drive coil device 1b of the second embodiment of the present invention, the outer periphery of the electromagnetic drive coil device 1b and the like are enclosed by outer molding in a high pressure holding process. By preventing the liquid from entering the electromagnetic drive coil device 1b from entering the electromagnetic drive coil device 1b, it is possible to prevent the liquid from being formed and to prevent the void from being generated in the molded part. Can do. Accordingly, it is possible to provide the electromagnetic drive coil device 1b that ensures waterproofness and strength.

  Further, when the inner mold is formed by introducing a resin material inside the upper and lower yokes 307 and 308, etc., it is performed in a low pressure holding process, so that the external pressure provided in the stator assembly 300 is relatively easy. It is possible to prevent disconnection of the stator coils 309 and 311 that would be damaged.

  On the other hand, the inner mold molding portion 331 that is molded by the inner mold is performed in a low pressure holding process in consideration of the effect of disconnection of the stator coils 309 and 311, so that sufficient strength is obtained due to generation of voids and the like. Although there is a concern that it is difficult to ensure, the outer peripheral portion of the stator assembly 300 having such an inner mold forming portion 331 and a power supply terminal 303 molded by a resin material supplied when performing the inner mold forming. Since the inner mold molding part 332 formed by inner mold molding on the outer periphery of the outer mold is covered with the outer mold molding part 333, the inner mold molding parts 331 and 332 are covered with the outer mold molding part 333. Especially, the strength of the part molded by the low pressure holding process It is possible to sufficiently increase.

  Furthermore, the connector part 304 is formed as a part of the outer mold forming part 333, and is formed by a high-temperature and high-pressure holding process capable of increasing the filling accuracy of the resin material. Therefore, it is possible to prevent variations in the quality of the connector portion 304, thereby increasing the degree of adhesion of the connecting portion with the plug, and thus improving the waterproofness.

  As mentioned above, although Example 1 and Example 2 were demonstrated, this invention is not limited to these Examples, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, as a modification of the second embodiment, although the size is increased, the inner mold forming portion 331 may be formed to the outside of the upper and lower yokes 307 and 308. Further, the moldability and the mold of the injection molding machine may be used. The upper and lower yokes 307 and 308 may be attached to the stator assembly 300 after inner molding.

  Further, the inner mold is performed with the upper and lower outer yokes 323 removed from the stator assembly 300 shown in FIG. 6, and then the two outer yokes 323 are mounted, and the outer motor is molded in this state. Good. In this case, even if the two outer yokes 323 are excluded from the stator assembly 300, a stator assembly can be obtained.

  Further, in the molding method of the electromagnetic drive coil device 1b in the second embodiment, when inner molding is performed, a resin material is introduced into the yokes 307 and 308 through the plurality of introduction holes 324, and outer molding is performed. As shown in FIG. 4, the resin material is introduced from one resin injection port 240 instead of a plurality. The reason is that in the case of inner mold molding, the interior of the stator assembly 300 has a complicated structure, and the introduction of the resin material is performed at a low pressure in order to prevent damage to the stator coils 309 and 311 when the resin material is introduced. Since it is good to do, although the resin material introduced when performing inner mold molding is introduced from the plurality of introduction holes 324, it is of course possible to introduce from one introduction hole.

  Also, when performing outer mold molding, the resin injection port 240 may be a plurality of locations, but if resin introduction is performed from a plurality of resin injection ports 240, so-called weld lines are generated at the merged portion of the resin flowing from each injection port, There is a concern that the strength in the portion becomes weak, and the weld line cracks due to a temperature change and moisture enters. Therefore, it is desirable that the resin injection port 240 is provided at one location (for example, one location on the ceiling of the electromagnetic drive coil device 1b) in order to prevent the generation of weld lines. Of course, a plurality of locations may be used if the formation of the weld line is allowed.

1, 1a; 1b Electromagnetic drive coil device 20 Resin mold 30, 30a Connector frame member 31; 304 Connector part 32 Coupling part 33 Rib 34; 305 Outer guide part 36 Inner guide part 37, 37a; 306 Stopper projection 100; 300 Stator assembly 110; 307 Upper yoke 112, 114, 132, 134; 320, 322 Magnetic pole teeth 116, 136; 324 Introduction holes 118, 138; 325, 326 Notch 120, 140; 309, 311 Stator coil 122, 142; 303 Feeding terminals 124 and 310 Upper bobbins 126 and 146; 327 and 328 Bobbin ends 130; 308 Lower yoke 144; 312 Lower bobbin 150; 330 Terminal support member 200 Injection molding machine mold 210 Lower mold 212 Core 220 Upper mold 230 Cavity 40 resin injection port 331 inner molded portion 332 inner molded portion 333 outer molded portion P molding resin

The present invention relates to an electromagnetic drive coil equipment to be mounted as an actuator to an electric valve or solenoid valve.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to reliably achieve a mold for a stator assembly having a complicated structure and a connector part for which accuracy is required, and ensure sufficient strength. It is to provide an electromagnetic driving coil equipment which also ensure waterproofness while.

The electromagnetic drive coil device of the present invention comprises:
Cylindrical yoke pole teeth are formed on the inner side, the stator assembly having a feeding terminal to the stator coil and the stator coil with respect to the inner mold body formed by molding a resin, the feeding terminals by an outer mold An electromagnetic drive coil device integrally molded with a connector frame member to be wrapped ,
A portion of the inner mold body that covers the power supply terminal is exposed inside the connector frame member .
It is characterized by that.

Claims (12)

An electromagnetic drive coil device formed by molding a stator assembly including a cylindrical yoke having magnetic pole teeth formed inside, a stator coil, and a power supply terminal to the stator coil,
An electromagnetic drive coil device characterized in that the stator assembly formed by separate processes and a connector frame member that wraps the power supply terminal are integrated. The electromagnetic drive coil device according to claim 1,
An electromagnetic drive coil device, wherein the connector frame member is formed in advance, the connector frame member is inserted into the stator assembly, and the whole is integrally molded. The electromagnetic drive coil device according to claim 1,
An electromagnetic drive coil device, wherein the stator assembly molded in advance is used as an inner mold body, and the connector frame member is formed integrally with the inner mold body by an outer mold. A method for forming an electromagnetic drive coil device, wherein a cylindrical yoke having magnetic pole teeth formed inside, a stator assembly including a stator coil and a power supply terminal to the stator coil is molded by resin,
A method for forming an electromagnetic drive coil device, wherein the stator assembly and a connector frame member that wraps the power supply terminal are formed by separate steps to form an integrated structure. A method for forming an electromagnetic drive coil device according to claim 4,
A method for forming an electromagnetic drive coil device, wherein the connector frame member is formed in advance, the connector frame member is inserted into the stator assembly, and the whole is integrally molded. A method for forming an electromagnetic drive coil device according to claim 4,
A method for forming an electromagnetic drive coil device, wherein the stator assembly is formed by inner molding as a first step, and then the connector frame member is integrally formed by outer molding as a second step. A bobbin wound with a stator coil and a yoke with magnetic pole teeth are used as a stator assembly,
A method for forming an electromagnetic drive coil device, wherein the stator assembly and a power supply terminal for supplying power to the bobbin are molded with a resin material,
In the state where one end of the stator coil provided in the stator assembly and the power supply terminal are connected, inner molding is performed,
After the inner mold is formed, the outer mold is molded so as to cover the outer peripheral portion of the stator assembly and the outside of the power supply terminal, and the method for forming an electromagnetic drive coil device . A method for forming an electromagnetic drive coil device according to claim 7,
When performing the inner mold, the pressure holding process is performed at a low pressure,
A method for forming an electromagnetic drive coil device, wherein when performing the outer mold forming, a pressure holding step is performed at a pressure higher than the low pressure holding pressure. A method for forming an electromagnetic drive coil device according to claim 7 or 8,
The method for molding an electromagnetic drive coil device, wherein the resin material for performing the inner mold molding and the resin material for performing the outer mold molding are molded of the same kind of resin material. A method for forming an electromagnetic drive coil device according to any one of claims 7 to 9,
A method for forming an electromagnetic drive coil device, wherein an introduction hole is provided in a side wall of the yoke, and a resin material for performing the inner mold forming is introduced into the yoke through the introduction hole. A method for forming an electromagnetic drive coil device according to any one of claims 7 to 9,
The yoke is composed of an upper yoke and a lower yoke arranged to face each other,
The upper and lower yokes are each composed of an inner yoke and an outer yoke,
A method for forming an electromagnetic drive coil device, wherein when performing the inner molding, the outer yoke is not attached to the stator assembly. A method for forming an electromagnetic drive coil device according to claim 10,
A plurality of the introduction holes are provided on the side wall of the yoke, and when performing the inner molding, the resin material is introduced into the yoke through the introduction holes provided on the side wall of the yoke,
A molding method for an electromagnetic drive coil device, wherein the resin material introduced when performing the outer mold molding is introduced from one resin injection port.

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