JP2019146367A - Stator structure and resolver - Google Patents

Abstract

To efficiently attach a plurality of lead wires to a stator structure.SOLUTION: A stator structure comprises: a stator core; an insulator; a winding; and a terminal board part. The stator core includes: an annular main body part; and a plurality of teeth extending in a radial direction of the main body part and arranged along a peripheral direction of the main body part. The insulator covers the plurality of teeth. The winding is wound on each of the plurality of teeth via the insulator to form a plurality of coils. The terminal board part includes a member insertion part on which a plurality of terminals each having a tie-down portion onto which an end of the winding is tie-downed and a connection part to which a lead wire are connected are provided, and which allows insertion of a lead wire holding member having the plurality of connection terminals connected to each of the plurality of lead wires. The plurality of connection terminals are connected to the connection part of the plurality of connection terminals by insertion of the lead wire holding member into the member insertion part.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a stator structure and a resolver.

  Conventionally, a resolver that detects a rotation angle of a rotating electric machine such as a motor or a generator is known. Such a resolver includes, for example, a stator core provided with a plurality of teeth extending from the inner peripheral side of the main body portion formed in an annular shape toward the center, and a rotor disposed to face the teeth inside the stator core. In addition, a winding is wound around the teeth via an insulator, and the winding is wound around one end of the terminal. Then, the other end of the terminal is disposed so as to extend to the lead wire holding portion, and is connected to the lead wire extending from the external device by the lead wire holding portion.

JP2015-211151A

  However, according to the conventional technique, since it is necessary to weld the plurality of lead wires to the lead wire holding portion, the load in the process of attaching the plurality of lead wires to the stator structure has been increased.

  This invention is made | formed in view of the above, Comprising: It aims at providing the stator structure and resolver which can attach a some lead wire efficiently.

  In order to solve the above-described problems and achieve the object, a stator structure according to one aspect of the present invention includes a stator core, an insulator, a winding, and a terminal block. The stator core includes an annular main body and a plurality of teeth extending in the radial direction of the main body and arranged along the circumferential direction of the main body. The insulator covers the plurality of teeth. The winding is wound around each of the plurality of teeth via the insulator to form a plurality of coils. The terminal block is provided with a plurality of terminals each having a binding portion where the end of the winding is entangled and a connection portion to which a lead wire is connected, and a plurality of connection terminals connected to each of the plurality of lead wires. The lead wire holding member having a member insertion portion that can be inserted, and the lead wire holding member is inserted into the member insertion portion, whereby the plurality of connection terminals are respectively connected to the connection portions of the plurality of terminals. Connected.

  According to one aspect of the present invention, a plurality of lead wires can be efficiently attached to the stator structure.

FIG. 1 is a top view illustrating a configuration of a stator structure according to the embodiment. FIG. 2 is a perspective view illustrating a configuration of a terminal according to the embodiment. FIG. 3 is a bottom view showing the configuration of the stator structure according to the embodiment. FIG. 4 is an enlarged view showing the structure of the terminal block portion of the stator structure according to the embodiment. FIG. 5 is a view for explaining the lead wire holding member according to the embodiment. FIG. 6 is a perspective view illustrating a configuration of the connection terminal according to the embodiment. FIG. 7 is a cross-sectional view showing a connection state in the lead wire holding member according to the embodiment. Drawing 8 is a figure (1) for explaining the process of attaching a lead wire holding member to the stator structure concerning an embodiment. FIG. 9 is a diagram (2) for explaining a process of attaching the lead wire holding member to the stator structure according to the embodiment. FIG. 10 is a diagram (1) for explaining a state in which the lead wire holding member is attached to the stator structure according to the embodiment. FIG. 11 is a diagram (2) for explaining a state in which the lead wire holding member is attached to the stator structure according to the embodiment. FIG. 12 is a diagram (3) for explaining a state in which the lead wire holding member is attached to the stator structure according to the embodiment.

  Hereinafter, a stator structure and a resolver according to an embodiment will be described with reference to the drawings. The application of the stator structure and the resolver is not limited by the embodiments described below. It should be noted that the drawings are schematic, and the relationship between the dimensions of each element, the ratio of each element, and the like may differ from the actual situation. Furthermore, there are cases in which parts having different dimensional relationships and ratios are included between the drawings.

(Structure of stator structure)
First, the configuration of the stator structure 1 according to the embodiment will be described with reference to FIGS. FIG. 1 is a top view illustrating a configuration of a stator structure 1 according to the embodiment, and FIG. 2 is a perspective view illustrating a configuration of a terminal 41 according to the embodiment.

  By providing a rotor (not shown) inside the stator structure 1 of the resolver shown in FIG. 1, the resolver according to the embodiment is obtained. The resolver according to the embodiment is, for example, a VR (Variable Reluctance) type resolver, and the rotor is fixed to the output shaft of the rotating electrical machine, and rotates as the output shaft rotates. Thereby, the rotation angle of the output shaft in the rotating electrical machine can be detected.

  As shown in FIGS. 1 and 2, the stator structure 1 includes a stator core 10, an insulator 20, a winding 30, and a terminal block 40.

  Stator core 10 has a laminated structure in which a plurality of steel plates such as electromagnetic steel plates are laminated. Stator core 10 has a main body 11 and a plurality of teeth 12. The main body 11 is annular, and in the embodiment, is annular. The plurality of teeth 12 extend from the inner peripheral side of the main body 11 toward the center of the main body 11 (that is, in the radial direction).

  Hereinafter, as shown in FIG. 1 and FIG. 8 described later, the radial direction, the axial direction, and the circumferential direction of the stator core 10 are defined and described. Here, the “radial direction” is a direction orthogonal to the rotation axis of the rotor rotating inside the stator core 10, and the “axial direction” is a direction coinciding with the axial direction of the rotation axis of the rotor, The “circumferential direction” is a direction coinciding with the rotational direction of the rotor.

  The insulator 20 is an insulating member, and is formed, for example, by injection molding of an insulating resin. The insulator 20 is formed, for example, by insert molding in which the stator core 10 is embedded therein, and covers the stator core 10 from both sides in the axial direction.

  The winding 30 shown in FIG. 2 has a conducting wire and an insulating film covering the periphery of the conducting wire. Such a conducting wire is, for example, a metal wire such as a copper wire, an aluminum wire, or a brass wire. Winding 30 is wound around each of a plurality of teeth 12 via insulator 20 shown in Drawing 1, and forms a plurality of coils which are not illustrated.

  Such a coil is composed of an excitation winding and an output winding. The output winding of the coil includes a sin-phase output winding that outputs a sin-phase output signal and a cos-phase output winding that outputs a cos-phase output signal.

  The terminal block 40 is formed on the insulator 20 and extends outward from the insulator 20 in the radial direction. A plurality of (six in the embodiment) terminals 41 are supported on the terminal block 40.

  The terminal 41 is a conductive member such as metal, and has a binding portion 41a that protrudes in an axial direction from the upper surface side of the terminal base portion 40 on one end side, as shown in FIGS. And the terminal of the coil | winding 30 which comprises a corresponding coil is entangled with this entanglement part 41a.

  For example, the binding portions 41a of the six terminals 41 include the start of the excitation winding, the end of the excitation winding, the start of the sin phase output winding, and the end of the sin phase output winding. The winding start of the cos phase output winding and the winding end of the cos phase output winding are respectively entangled.

  And the winding 30 and the binding part 41a can be electrically connected by, for example, performing TIG (Tungsten Inert Gas) welding to the binding part 41a in which the end of the winding 30 is wound. .

  The winding 30 forming the plurality of coils is guided by a guide portion (not shown) and extends from the coil toward the binding portion 41a through a predetermined path. Such a guide portion is, for example, a pin-shaped guide pin standing at a predetermined position in the terminal block portion 40. Moreover, a guide part is each provided separately with respect to the some coil | winding 30 entangled in the some binding part 41a.

  Moreover, in order to reduce the influence of thermal expansion due to temperature change, a slack is formed between the coil and the binding portion 41a in the winding 30 constituting the plurality of coils. The slack is inserted into a plurality of insertion holes 43 formed in the terminal base portion 40 through a slack pin (not shown), and the winding 30 is hooked on the slack pin while being entangled with the binding portion 41a. It is formed by pulling a slack pin from 43.

  Further, the connection portion 41 b that is the other end side of the terminal 41 shown in FIG. 2 extends so as to be close to the member insertion portion 42 formed on the upper surface side of the terminal base portion 40. The member insertion portion 42 is a recess having a predetermined shape (for example, a rectangular shape) on the bottom surface, and has a shape capable of fitting a lead wire holding member 100 (see FIG. 5) described later.

  The member insertion portion 42 has a plurality of through holes 42a at predetermined locations. The plurality of through holes 42a have shapes into which the columnar portions 100bb (see FIG. 5) of the plurality of connection terminals 100b (see FIG. 5) formed integrally with the lead wire holding member 100 can be respectively inserted. And the connection part 41b of the terminal 41 is exposed from the inner wall of the through-hole 42a.

  The connecting portion 41b of the terminal 41 is exposed from an exposed portion 44 formed on the lower surface side of the terminal base portion 40 as shown in FIGS. FIG. 3 is a bottom view showing the configuration of the stator structure 1 according to the embodiment, and FIG. 4 is an enlarged view showing the structure of the terminal block 40 of the stator structure 1 according to the embodiment.

  As shown in FIG. 4, the exposed portion 44 is composed of a long hole portion 44a formed in a substantially arc shape along the circumferential direction and a plurality of circular hole portions 44b formed on the bottom surface of the long hole portion 44a. Is done. And from this circular hole part 44b, a part of connection part 41b of the terminal 41 which is a substantially U shape exposes. Further, the substantially U-shaped groove 41ba in the connecting portion 41b shown in FIG. 2 is connected to the above-described through hole 42a.

  The shape of the connecting portion 41b is not limited to a substantially U shape, and may be any shape as long as the connecting terminal 100b of the lead wire holding member 100 can be connected.

  Moreover, the insulator 20 and the terminal base part 40 are good to be formed integrally. Thereby, since the insulator 20 and the terminal base part 40 can all be shape | molded by one shaping | molding process, the manufacturing process of the stator structure 1 can be simplified.

(Lead wire installation process)
Next, details of the process of attaching the lead wire 101 to the stator structure 1 according to the embodiment described so far will be described with reference to FIGS.

  FIG. 5 is a view for explaining the lead wire holding member 100 according to the embodiment. The lead wire holding member 100 according to the embodiment has a substantially rectangular parallelepiped shape, and a plurality (six in the embodiment) of groove-like insertion portions 100a are formed side by side along the same direction.

  And the lead wire holding member 100 can hold | maintain the several lead wire 101 collectively by inserting the lead wire 101 in this insertion part 100a. For example, as shown in FIG. 5, six lead wires 101 can be held together.

  Further, the lead wire holding member 100 has a plurality of conductive connection terminals 100b (six in the embodiment). As shown in FIG. 6, the connection terminal 100 b has a flat plate portion 100 ba on one end side exposed in the insertion portion 100 a and a prismatic column portion 100 bb on the other end side in the lead wire holding member 100. It protrudes side by side from the opposite side of the insertion part 100a. FIG. 6 is a perspective view illustrating a configuration of the connection terminal 100b according to the embodiment. The plurality of connection terminals 100b are formed integrally with the lead wire holding member 100 by insert molding or the like.

  Then, as shown in FIG. 7, by inserting the lead wire 101 into the insertion portion 100a of the lead wire holding member 100, the lead wire 101 and the connection terminal 100b can be electrically connected. FIG. 7 is a cross-sectional view showing a connection state in the lead wire holding member 100 according to the embodiment.

  For example, resistance welding is applied to the core wire 101a of the lead wire 101 and the flat plate portion 100ba of the connection terminal 100b from the concave portion 100c formed on the back surface side of the lead wire holding member 100, thereby the lead wire 101 and the connection terminal 100b. Can be electrically connected.

  8 and 9 are views (1) and (2) for explaining a process of attaching the lead wire holding member 100 to the stator structure 1 according to the embodiment. As shown in FIG. 8, the lead wire holding member 100 that holds the plurality of lead wires 101 together is inserted into the member insertion portion 42 of the terminal base portion 40 from a predetermined direction (for example, the axial direction).

  As shown in FIG. 9, the columnar portion 100bb of the connection terminal 100b protruding from the distal end portion of the lead wire holding member 100 is inserted and fitted into the groove portion 41ba of the terminal 41 embedded in the terminal base portion 40.

  FIG. 10 is a diagram (1) for explaining a state in which the lead wire holding member 100 is attached to the stator structure 1 according to the embodiment. Specifically, the upper surface side of the terminal block 40 (that is, member insertion) It is the expansion perspective view which showed the part in which the part 42 is formed.

  As described above, since the member insertion portion 42 of the terminal base portion 40 is formed so that the lead wire holding member 100 can be fitted, the lead wire holding member 100 becomes the member insertion portion 42 as shown in FIG. By inserting, the lead wire holding member 100 can be fitted and held in the terminal block 40.

  In the embodiment, a slit (not shown) provided on the side surface of the lead wire holding member 100 may be provided and engaged with a projection (not shown) formed on the side surface of the member insertion portion 42. Thereby, it is possible to suppress the fitted lead wire holding member 100 from being detached from the member insertion portion 42.

  11 and 12 are views (2) and (3) for explaining a state in which the lead wire holding member 100 is attached to the stator structure 1 according to the embodiment. FIG. 12 is an enlarged perspective view specifically showing the lower surface side of the terminal block portion 40 (that is, the side where the exposed portion 44 is formed).

  As described above, the groove portion 41ba of the connection portion 41b of the terminal 41 is connected to the through hole 42a through which the connection terminal 100b of the lead wire holding member 100 can be inserted, so that the lead wire holding member 100 is inserted into the member insertion portion 42. By doing so, as shown in FIGS. 11 and 12, the connection terminal 100b inserted through the through hole 42a can be connected to the connection portion 41b.

  That is, in the embodiment, a plurality of lead wires 101 are connected to the stator structure 1 by inserting the lead wire holding member 100 that holds the lead wires 101 together into the member insertion portion 42 of the stator structure 1. can do. Therefore, according to the embodiment, the plurality of lead wires 101 can be efficiently attached to the stator structure 1.

  In the embodiment, since the connection portion 41b and the connection terminal 100b of the terminal 41 are exposed at the exposed portion 44, the connected connection portion 41b and the connection terminal 100b are exposed at the exposed portion 44 using laser welding or the like. Can be joined.

  Therefore, according to the embodiment, by exposing the connecting portion 41b of the terminal 41 from the exposed portion 44, it is possible to improve the bonding strength between the connecting portion 41b and the connecting terminal 100b and to reduce the contact resistance. it can.

  In the embodiment, the connection portion 41 b of the terminal 41 is connected to the lead wire 101 via the connection terminal 100 b formed integrally with the lead wire holding member 100. Thus, the lead wire 101 having any shape can be easily connected to the connection portion 41b through the connection terminal 100b.

  In the embodiment, since the step of winding the winding 30 to the binding portion 41a and the connecting step of the lead wire 101 can be performed independently, for example, when the winding 30 is TIG welded, The inert gas collides with the wall portion of the adjacent lead wire holding member 100 and rebounds, so that the quality of TIG welding does not deteriorate. For this reason, as shown in FIG. 10, the direction in which the binding portion 41 a of the terminal 41 protrudes and the direction in which the lead wire 101 extends from the lead wire holding member 100 can be made the same.

  In the embodiment, an example in which the connection portion 41b and the connection terminal 100b are joined using laser welding has been described, but means for joining is not limited to laser welding. In the embodiment, if the connection portion 41b and the connection terminal 100b are connected, there is no need to separately join them by laser welding or the like.

  In this case, in order to support the lead wire holding member 100 on the member insertion portion 42, the above-described slit may be engaged with a concave portion provided in the member insertion portion 42, or the slit may be engaged in the member insertion portion 42. It is not necessary to engage with the recess provided in the.

  Further, if the connection portion 41b and the connection terminal 100b are joined, the lead wire holding member 100 can be supported by the member insertion portion 42, so that the above-described slit is engaged with a recess provided in the member insertion portion 42. You don't have to.

  In the embodiment, as shown in FIGS. 8 and 10, the lead wire holding member 100 is inserted into the member insertion portion 42 along the axial direction, and the lead wire 101 extends from the lead wire holding member 100 along the axial direction. It should be extended. Thereby, the space which provides another apparatus in the outer peripheral side of the stator structure 1 can be ensured easily.

  In the embodiment, the lead wire holding member 100 is inserted into the member insertion portion 42 along the axial direction, and the lead wire 101 extends from the lead wire holding member 100 along the axial direction. The direction in which the wire holding member 100 is inserted and the direction in which the lead wire 101 extends are not limited to the axial direction, and may be any direction.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the embodiment, the example in which the insulator 20 is integrally formed has been described. However, the insulator may be divided into two in the axial direction, and the stator core 10 may be sandwiched between the two insulators.

  In the embodiment, the present invention is applied to an inner rotor type resolver. However, the present invention may be applied to an outer rotor type resolver.

  As described above, the stator structure 1 according to the embodiment includes the stator core 10, the insulator 20, the winding 30, and the terminal block portion 40. The stator core 10 includes an annular main body 11 and a plurality of teeth 12 that extend in the radial direction of the main body 11 and are arranged along the circumferential direction of the main body 11. The insulator 20 covers the plurality of teeth 12. Winding 30 is wound around each of a plurality of teeth 12 via insulator 20 to form a plurality of coils. The terminal block portion 40 is provided with a plurality of terminals 41 each having a binding portion 41 a where the end of the winding 30 is bound and a connection portion 41 b where the lead wire 101 is connected, and is connected to each of the plurality of lead wires 101. The lead wire holding member 100 having a plurality of connection terminals 100b has a member insertion portion 42 into which the lead wire holding member 100 can be inserted. By inserting the lead wire holding member 100 into the member insertion portion 42, the plurality of connection terminals 100b become a plurality of terminals. 41 is connected to the connection part 41b. Thereby, the plurality of lead wires 101 can be efficiently attached to the stator structure 1.

  In the stator structure 1 according to the embodiment, the plurality of connection terminals 100 b are formed integrally with the lead wire holding member 100. Thus, any shape of the lead wire 101 can be easily connected to the connecting portion 41b.

  Further, in the stator structure 1 according to the embodiment, the connection portion 41b of the terminal 41 is formed with a groove portion 41ba, and the connection terminal 100b is connected to the connection portion 41b with a columnar portion 100bb that can be fitted to the groove portion 41ba. Thereby, the terminal 41 and the connection terminal 100b can be connected easily.

  Further, in the stator structure 1 according to the embodiment, the direction in which the binding portion 41 a of the terminal 41 protrudes and the direction in which the lead wire 101 extends from the lead wire holding member 100 can be the same.

  In the stator structure 1 according to the embodiment, the terminal block 40 includes the connection portion 41b and the connection terminal 100b connected to the connection portion 41b when the lead wire holding member 100 is inserted into the member insertion portion 42. An exposed portion 44 is exposed. Thereby, while being able to improve the joint strength of the connection part 41b and the connection terminal 100b, contact resistance can be reduced.

  In the stator structure 1 according to the embodiment, the lead wire holding member 100 is inserted into the member insertion portion 42 along the axial direction of the stator core 10, and the lead wire 101 extends from the lead wire holding member 100 along the axial direction. To do. Thereby, the space which provides another apparatus in the outer peripheral side of the stator structure 1 can be ensured easily.

  The resolver according to the embodiment includes a rotor and the stator structure 1 described above. Thereby, the resolver which can attach the some lead wire 101 to the stator structure 1 efficiently is realizable.

  Further, the present invention is not limited by the above embodiment. What comprised suitably combining each component mentioned above is also contained in this invention. Further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspect of the present invention is not limited to the above-described embodiment, and various modifications can be made.

  DESCRIPTION OF SYMBOLS 1 Stator structure, 10 Stator core, 11 Main part, 12 Teeth, 20 Insulator, 30, Winding, 40 Terminal block part, 41 Terminal, 41a Tying part, 41b Connection part, 41ba Groove part, 42 Member insertion part, 44 Exposed part , 100 Lead wire holding member, 100a insertion portion, 100b connection terminal, 100bb columnar portion, 101 lead wire

Claims (8)

A stator core having an annular main body, and a plurality of teeth extending in the radial direction of the main body and arranged along the circumferential direction of the main body,
An insulator covering the plurality of teeth;
Windings that are wound around each of the plurality of teeth via the insulator to form a plurality of coils;
A lead wire holding member having a plurality of terminals each having a binding portion to which the end of the winding is wound and a connection portion to which a lead wire is connected, and having a plurality of connection terminals connected to each of the plurality of lead wires. A terminal base portion having a member insertion portion into which the plurality of connection terminals are connected to the connection portions of the plurality of terminals, respectively, by inserting the lead wire holding member into the member insertion portion. When,
A stator structure comprising:   The stator structure according to claim 1, wherein the plurality of connection terminals are formed integrally with the lead wire holding member. A groove is formed in the connection portion of the terminal,
The stator structure according to claim 1, wherein the connection terminal is connected to the connection portion by a columnar portion that can be fitted to the groove portion.   The stator structure according to any one of claims 1 to 3, wherein a direction in which the binding portion of the terminal protrudes and a direction in which the lead wire extends from the lead wire holding member are the same.   The said terminal base part has an exposed part which exposes the said connection part and the said connection terminal connected to the said connection part, when the said lead wire holding member is inserted in the said member insertion part. The stator structure according to any one of 4. The lead wire holding member is inserted into the member insertion portion along the axial direction of the stator core,
The stator structure according to claim 1, wherein the lead wire extends from the lead wire holding member along the axial direction.   The stator structure according to claim 1, wherein the connection terminal is welded to a core wire of the lead wire. A rotor,
The stator structure according to any one of claims 1 to 7,
A resolver.

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