JP2015027131A - Resolver stator structure and assembly method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach an annular insulation member simply to an annular iron core, by using an annular insulation member having a magnetic pole covering part of U-shaped cross section.SOLUTION: In a resolver stator structure and an assembly method thereof, a magnetic pole covering part (3b) is attached for each magnetic pole (2) by attaching the magnetic pole covering part (3b) of an annular insulation member (3) to one end face (1A or 1B) of an iron core (1), and stator wiring (6) is wound around the outer periphery of each magnetic pole (2) with the magnetic pole covering part (3b) interposed therebetween.

Description

  The present invention relates to a resolver stator structure and an assembling method thereof, and in particular, a ring-shaped insulating member having a magnetic pole cover portion having a U-shaped cross section is used, and the magnetic pole cover portion is fitted from one end surface side to the other end surface side. The present invention relates to a novel improvement for enabling a ring-shaped insulating member to be easily mounted on a ring-shaped iron core by mounting.

  As this type of resolver stator structure that has been used in the past, for example, a structure using a two-body ring-shaped insulating member 3 shown in Patent Documents 1 and 2 is as shown in FIGS. Although the structure of FIG. 6 does not show patent documents, it shows a case where the annular insulating member 3 is formed by insert molding.

What is indicated by reference numeral 1 in FIG. 4 is a ring-shaped iron core made of a ring plate having a predetermined thickness in a laminated structure, and the inner peripheral surface 1b of the ring-shaped iron core 1 extends along the radial direction r. A large number of magnetic poles 2 projecting inward are formed.
A pair of preformed ring-shaped insulating members 3 and 3 (FIGS. 4 and 5) are provided on both end faces 1A and 1B of the ring-shaped iron core 1, and on the inner peripheral side of the ring-shaped insulating members 3 and 3, respectively. Is formed with a channel-shaped magnetic pole cover portion 3b for covering the upper or lower portion of each magnetic pole 2. The magnetic pole cover 3b has a magnetic pole 2 at the tip, that is, the inner end, along the radial direction r. A winding-stopping tongue piece 3a is formed so that the stator winding 6 wound around the magnetic pole cover 3b is aligned with the magnetic pole 2.

  The cross-sectional shape in the direction AA perpendicular to the radial direction r of each magnetic pole 2 shown in FIG. 4 is as shown in FIG. 5, and the magnetic pole cover portion 3b is two bodies, that is, the annular insulating member 3 is also It consists of two bodies.

  FIG. 6 is a cross-sectional view showing another conventional example of FIG. 5. In the configuration of FIG. 6, an annular iron core 1 having magnetic poles 2 is installed in a mold of an injection molding machine (not shown) and inserted. By molding, the ring-shaped insulating member 3 is continuously formed integrally with the one end surface 1A and the other end surface 1B of the ring-shaped iron core 1, and the magnetic pole covering portion 3b and the tongue piece 3a are integrally formed with the outer periphery of each magnetic pole 2. Is formed.

US Pat. No. 6,838,804B2 specification JP 2001-352733 A

Since the conventional resolver stator structure is configured as described above, the following problems exist.
That is, as shown in FIGS. 4 and 5, when the pair of ring-shaped insulating members 3 and 3 formed in advance on the end faces 1A and 1B of the ring-shaped iron core 1 are provided, The pair of ring-shaped insulating members 3, 3 must be assembled, and it has been extremely difficult to improve the working efficiency of the resolver assembly.
In addition, as shown in FIG. 6, in the case of insert molding, the finished state is good, but the annular iron core 1 is installed in the mold of the injection molding machine, and terminal pins are also installed via the core etc. Terminal pin holding part etc. must be molded, the product after injection molding is taken out, if the iron core is thin, burrs etc. may occur, and if the iron core is thick, the dent on the iron core may occur there were.
Further, in order to overcome the above problem, there is a problem that if a mold for adjusting the thickness of the iron core of the stator is manufactured, the mold must be extremely expensive.

  The present invention has been made to solve the above-described problems, and in particular, a ring-shaped insulating member having a magnetic pole covering portion having a U-shaped cross section is fitted from one end surface of a ring-shaped iron core. It is an object of the present invention to provide a resolver stator structure and an assembling method thereof in which a magnetic pole cover is easily attached to each magnetic pole.

  The resolver stator structure according to the present invention protrudes inward along the radial direction from the inner peripheral surface of the ring-shaped iron core, or protrudes outward along the radial direction from the outer peripheral surface of the ring-shaped iron core. A plurality of magnetic poles, a ring-shaped insulating member that is provided on one end surface or the other end surface of the ring-shaped iron core and has a magnetic pole cover for covering the magnetic poles, and wound around the magnetic poles via the magnetic pole cover In the resolver stator structure comprising a stator winding, the annular insulating member and each magnetic pole cover are formed integrally, and the magnetic pole cover is viewed in a cross-sectional shape in a direction perpendicular to the radial direction of the magnetic pole. A pair of locking portions projecting inward from each other are formed at both ends of the magnetic pole cover, and the magnetic pole cover is formed from one end surface to the other end surface of each magnetic pole. The front is fitted and fitted Each locking portion is configured to be locked to each corner on both sides of the other end surface, and each locking portion is configured to include a claw portion, and the radius of the magnetic pole covering portion A winding stopper tongue formed integrally with the magnetic pole cover is provided at the tip position along the direction, and the winding stopper tongue is outside the outer peripheral portion of the cross-sectional shape of the magnetic pole cover. Is a large and wide U-shaped configuration, and a part of the stator winding wound around the magnetic pole through the magnetic pole cover is The partial winding is provided in a state of crossing between the locking portions, and the partial winding is separated from the other end surface of the magnetic pole via a space, and the partial winding is caused by solidification of the molten resin filled in the space. The wire is fixed, and the four outer peripheral corners of the outer periphery of the magnetic pole cover are predetermined. A radiused round portion is formed, and the ring-shaped insulating member is composed of only one ring-shaped iron core, and a method for assembling the resolver stator structure according to the present invention is as follows. A plurality of magnetic poles projecting inward along the radial direction from the inner peripheral surface of the ring-shaped iron core or projecting outward from the outer peripheral surface of the ring-shaped iron core along the radial direction; A ring-shaped insulating member provided on one end surface or the other end surface of the iron core and having a magnetic pole cover portion for covering each magnetic pole, and a stator winding wound around each magnetic pole via the magnetic pole cover portion Using a resolver stator structure, the ring-shaped insulating member and each magnetic pole cover are formed integrally, and the magnetic pole cover has a U-shape when viewed in a cross-sectional shape perpendicular to the radial direction of the magnetic pole. , On both sides of the magnetic pole cover A pair of locking portions projecting inward from each other is formed at the tip, and the magnetic pole cover portion is fitted and attached from one end surface to the other end surface of each magnetic pole, and each locking portion is attached to the other It is a method that is locked to each corner portion on both sides of the end surface, and each locking portion is a method that includes a claw portion, and at the tip position along the radial direction of the magnetic pole cover portion. A winding-stopping tongue piece formed integrally with the magnetic pole cover portion is provided, and the winding-stopping tongue piece is large and extends outside the outer peripheral portion of the cross-sectional shape of the magnetic pole cover portion, In addition, the overall shape is a U-shape, and the partial winding of the stator winding wound around the magnetic pole via the magnetic pole cover portion is between the locking portions. Provided in a state of crossing, the partial winding is in a state separated from the other end surface of the magnetic pole through a space, The part winding is fixed by solidification of the molten resin filled in the space, and the four outer corners of the outer periphery of the magnetic pole covering part are formed with rounded parts with a predetermined radius. In addition, the ring-shaped insulating member is composed of only one ring-shaped iron core.

Since the resolver stator structure and the assembling method thereof according to the present invention are configured as described above, the following effects can be obtained.
That is, a plurality of magnetic poles projecting inward along the radial direction from the inner peripheral surface of the ring-shaped iron core or projecting outward from the outer peripheral surface of the ring-shaped iron core along the radial direction; A ring-shaped insulating member provided on one end surface or the other end surface of a ring-shaped iron core and having a magnetic pole cover portion for covering each magnetic pole, and a stator winding wound around each magnetic pole via the magnetic pole cover portion. In the resolver stator structure, the ring-shaped insulating member and the magnetic pole cover portions are integrally formed, and the magnetic pole cover portions are formed in a U shape when viewed in a cross-sectional shape perpendicular to the radial direction of the magnetic poles. In addition, a pair of locking portions projecting inward from each other are formed at the tips on both sides of the magnetic pole cover portion, and the magnetic pole cover portion is fitted and mounted from one end surface to the other end surface of each magnetic pole, The locking portions are provided on both ends of the other end surface. By being engaged with each corner of the automatic molding and automatic assembly of annular insulation member is facilitated, resulting prevention of defective products, such as dents caused by realized and the core of the thickness problems cost.
Further, the magnetic pole cover can be easily attached to the magnetic pole by snap fitting of each locking portion, and automatic assembly becomes possible.
Moreover, the above-mentioned snap fit becomes easy because each said latching | locking part consists of a nail | claw part.
Further, a winding-stopping tongue piece integrally formed with the magnetic pole cover portion is provided at a tip position along the radial direction of the magnetic pole cover portion, and the winding stop tongue piece is formed by the magnetic pole cover portion. Since the outer shape of the cross-sectional shape extends outside and is large, and the overall shape is a U-shape, the formation of the magnetic pole cover and the ring-shaped insulating member is extremely easy.
The partial winding of the stator winding wound around the magnetic pole through the magnetic pole cover is provided in a state of crossing between the locking portions, and the partial winding is the other of the magnetic pole. Since the partial winding is fixed by the solidification of the molten resin filled in the space, the partial winding is floated in the space during winding because it is separated from the end surface through the space. Nevertheless, it can be fixed by solidifying the resin.
Further, the four outer corners of the outer periphery of the magnetic pole cover are formed with rounded portions having a predetermined radius, so that the winding operation of the stator winding is easy and the aligned winding is facilitated. The
Further, since the ring-shaped insulating member is composed of only one ring-shaped iron core, the ring-shaped iron core can be easily insulated from the stator winding with only one ring-shaped insulating member. This can greatly contribute to assembly.

FIG. 4 is a cross-sectional configuration view of the magnetic pole of the resolver stator structure of FIG. 3 according to the present invention, taken along line AA. It is sectional drawing which shows the state which wound the stator coil | winding to the outer periphery of the magnetic pole cover part of FIG. 1, and was solidified with resin. It is a perspective view of the resolver stator structure of this invention. It is a perspective view which shows the conventional resolver stator structure. It is AA sectional drawing of the conventional magnetic pole of FIG. It is sectional drawing of the magnetic pole of the other conventional form.

  The present invention uses a ring-shaped insulating member having a magnetic pole cover portion having a U-shaped cross section, and the magnetic pole cover portion is fitted and attached from one end surface side to the other end surface side of the magnetic pole, so that the ring-shaped insulating member becomes a ring-shaped iron It is the structure and method for enabling easy attachment to the core.

Hereinafter, preferred embodiments of a resolver stator structure and an assembling method thereof according to the present invention will be described with reference to the drawings.
The same or equivalent parts as in the conventional example will be described using the same reference numerals, and the resolver stator structure 50 according to the present invention in FIG. 3 is only different in the cross-sectional structure of the magnetic pole cover 3b shown in FIG. The same parts as those in the conventional structure in FIG.

What is indicated by reference numeral 2 in FIG. 1 is a large number of magnetic poles projecting inward along the radial direction r from the inner peripheral surface 1b of the annular iron core 1 in FIG. A ring-shaped insulating member 3 is provided on one end surface 1A (or the other end surface 1B).
The ring-shaped insulating member 3 has a plurality of magnetic pole cover portions 3b formed at positions corresponding to the magnetic poles 2 so as to cover the magnetic poles 2 and are directed inward as in the case of the magnetic poles 2. The ring-shaped insulating member 3 is integrally formed.

  As shown in FIG. 3, the magnetic pole cover 3b has a cross-sectional shape in a direction perpendicular to the radial direction r of the magnetic pole 2 (indicated by an arrow AA in FIG. 3) (in FIG. A pair of locking portions 21 projecting inward from each other at the front ends 20 on both sides of the magnetic pole covering portion 3b. Each locking portion 21 is, for example, It consists of a claw part 21a.

The magnetic pole covering portion 3b is fitted in a fitting manner from one end surface 1A, which is the upper surface or the lower surface of each magnetic pole 2, toward the other end surface 1B, and each locking portion 21 is provided on both sides of the other end surface 1B of the magnetic pole 2. Locked to each corner 22.
The four outer peripheral corner portions 23 on the outer periphery of the magnetic pole covering portion 3b are formed with rounded portions 23a (commonly called R) having a predetermined radius. Since the one end surface 1A and the other end surface 1B are the same surface as the ring-shaped iron core 1 and the magnetic pole 1, the same reference numerals of the one end surface 1A and the other end surface 1B are applied to both end surfaces of the magnetic pole 2.

  A winding stopper tongue 3a formed integrally with the magnetic pole cover 3b is provided at a tip position of the magnetic pole cover 3b along the radial direction r, and the winding stopper tongue 3a The magnetic pole cover portion 3b has a large shape extending outward from the outer peripheral portion 24 having the cross-sectional shape, and the entire shape is formed in a U shape.

  As shown in FIG. 1 described above, after the magnetic pole cover 3b of the ring-shaped insulating member 3 is fitted in each magnetic pole 2, the magnetic pole 2 is connected to the magnetic pole 2 via the magnetic pole cover 3b. When the stator winding 6 is wound, the partial winding 6a of the stator winding 6 is provided so as to cross between the locking portions 21 and 21, and the partial winding 6a is in a state of being separated from the other end face 1B of the magnetic pole 2 through the space 30, and the partial winding 6a is locked by the solidification of the molten resin 31 (potting agent) filled in the space 30. It is being fixed between the parts 21 and 21.

  Therefore, as shown in FIG. 2, the partial winding 6a is fixed by solidifying the molten resin 31, whereby the assembly of the resolver stator structure 50 is completed. However, in the embodiment of the present invention, one ring shape is provided. The resolver stator structure 50 that only leaves the winding process of the stator winding 6 can be assembled by mounting only one annular insulating member 3 on one end surface 1A or the other end surface 1B of the iron core 1. Automatic assembly by a robot can be easily performed.

The resolver stator structure and its assembling method according to the present invention can reduce the number of parts and cost of the resolver, can be aligned and wound, and can be applied not only to the resolver but also to a motor or the like.
The above-described magnetic pole 2 has been described for the inner rotor type that protrudes inward, but the same can be applied to a known outer rotor type that protrudes outward from the outer peripheral surface 1a.

DESCRIPTION OF SYMBOLS 1 Ring-shaped iron core 1A One-end surface of a ring-shaped iron core and a magnetic pole 1B Ring-shaped iron core and the other end surface of a magnetic pole 1a Outer peripheral surface 1b Inner peripheral surface 2 Magnetic pole 3 Ring-shaped insulation member 3a Winding tongue 3b Type)
6 Stator winding 6a Partial winding 20 Tip 21 Locking part (claw part)
21a Claw part 22 Corner part 23 Peripheral corner part (Ru part)
24 Outer circumference 30 Space 31 Molten resin r Radial direction

Claims (12)

Projecting inward along the radial direction (r) from the inner peripheral surface (1b) of the ring-shaped iron core (1) or from the outer peripheral surface (1a) of the ring-shaped iron core (1) in the radial direction (r) A plurality of magnetic poles (2) projecting outward along the outer surface, and one end surface (1A) or the other end surface (1B) of the annular iron core (1) for covering each magnetic pole (2) A resolver stator structure comprising a ring-shaped insulating member (3) having a magnetic pole cover (3b) and a stator winding (6) wound around each magnetic pole (2) via the magnetic pole cover (3b) In
The annular insulating member (3) and each magnetic pole cover (3b) are integrally formed, and the magnetic pole cover (3b) is a cross section in a direction perpendicular to the radial direction (r) of the magnetic pole (2). A pair of locking portions (21) projecting inward from each other are formed at the tips (20) on both sides of the magnetic pole cover portion (3b).
The magnetic pole cover (3b) is fitted and mounted from one end surface (1A) of each magnetic pole (2) toward the other end surface (1B), and each locking portion (21) is mounted on the other end surface (1B). A resolver stator structure, which is locked to each corner (22) on both sides.   The resolver stator structure according to claim 1, wherein each of the locking portions (21) comprises a claw portion.   A winding stopper tongue (3a) formed integrally with the magnetic pole cover (3b) is provided at the tip position along the radial direction (r) of the magnetic pole cover (3b), and the winding The stopping tongue piece (3a) is wide and wide outside the outer peripheral portion (24) of the cross-sectional shape of the magnetic pole cover (3b), and the overall shape is a U-shape. The resolver stator structure according to claim 1 or 2, characterized in that:   A partial winding (6a) of the stator winding (6) wound around the magnetic pole (2) via the magnetic pole cover (3b) is provided in a state of crossing between the locking portions (21). The partial winding (6a) is separated from the other end face (1B) of the magnetic pole (2) via the space (30), and the molten resin (31) filled in the space (30). The resolver stator structure according to any one of claims 1 to 3, wherein the partial winding (6a) is fixed by solidification.   The resolver stator according to any one of claims 1 to 4, wherein four outer corners (23) of the outer periphery of the magnetic pole cover (3b) are formed with rounded portions having a predetermined radius. Construction.   The resolver stator structure according to any one of claims 1 to 5, wherein the ring-shaped insulating member (3) comprises only one ring-shaped iron core (1). Projecting inward along the radial direction (r) from the inner peripheral surface (1b) of the ring-shaped iron core (1) or from the outer peripheral surface (1a) of the ring-shaped iron core (1) in the radial direction (r) A plurality of magnetic poles (2) projecting outward along the outer surface, and one end surface (1A) or the other end surface (1B) of the annular iron core (1) for covering each magnetic pole (2) A resolver stator structure comprising a ring-shaped insulating member (3) having a magnetic pole cover (3b) and a stator winding (6) wound around each magnetic pole (2) via the magnetic pole cover (3b) Use
The annular insulating member (3) and each magnetic pole cover (3b) are integrally formed, and the magnetic pole cover (3b) is a cross section in a direction perpendicular to the radial direction (r) of the magnetic pole (2). A pair of locking portions (21) projecting inward from each other are formed at the tips (20) on both sides of the magnetic pole cover portion (3b).
The magnetic pole cover (3b) is fitted and mounted from one end surface (1A) of each magnetic pole (2) toward the other end surface (1B), and each locking portion (21) is mounted on the other end surface (1B). A method for assembling a resolver stator structure, wherein the resolver stator structure is locked to each corner (22) on both sides.   The method of assembling a resolver stator structure according to claim 7, wherein each of the locking portions (21) is formed of a claw portion.   A winding stopper tongue (3a) formed integrally with the magnetic pole cover (3b) is provided at the tip position along the radial direction (r) of the magnetic pole cover (3b), and the winding The stopping tongue piece (3a) is wide and wide outside the outer peripheral portion (24) of the cross-sectional shape of the magnetic pole cover (3b), and the overall shape is a U-shape. 9. A method for assembling a resolver stator structure according to claim 7 or 8.   A partial winding (6a) of the stator winding (6) wound around the magnetic pole (2) via the magnetic pole cover (3b) is provided in a state of crossing between the locking portions (21). The partial winding (6a) is separated from the other end face (1B) of the magnetic pole (2) via the space (30), and the molten resin (31) filled in the space (30). The method for assembling a resolver stator structure according to any one of claims 7 to 9, wherein the partial winding (6a) is fixed by solidification of the resolver.   The resolver stator according to any one of claims 7 to 10, wherein the four outer corner portions (23) of the outer periphery of the magnetic pole covering portion (3b) are rounded portions having a predetermined radius. How to assemble the structure.   12. The method for assembling a resolver stator structure according to claim 7, wherein the ring-shaped insulating member (3) comprises only one ring-shaped iron core (1).

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