JP5647444B2 - Resolver insulator, resolver, and method for manufacturing the same - Google Patents

Description

  The present invention relates to a resolver insulator characterized by a structure in which an insulator is fixed to a stator core, a resolver using the insulator, and a resolver manufacturing method.

  As a structure for fixing an insulator of a resolver to a stator core, a structure using welding is known (for example, see Patent Document 1). As a method of fixing the insulator to the stator core, a method of insert molding the stator core into the insulator is also known.

JP 2004-120873 A

  Since the method using welding requires a hot melt process, it is necessary to newly introduce equipment. In addition, the method using welding in this connection is not appropriate because it is expensive when applied to a model with a small number of productions. Further, the method of insert molding the stator core into the insulator requires an operation for setting the stator core in the mold one by one, which complicates the assembly process. Moreover, since a mold must be prepared, the cost increases when applied to a model with a small number of productions.

  In such a background, an object of the present invention is to provide an insulator structure for a resolver that can securely fix a stator core and an insulator without increasing the number of steps.

The invention described in claim 1 is an insulator fixed to a stator core of a resolver, wherein a surface of the insulator that contacts the stator core is provided with a concave portion in which an adhesive is accumulated, and the insulator projects in a direction of the stator core. And an insulator for a resolver having a convex portion whose side surface is an extension of the wall surface of the concave portion, and a through-hole penetrating the surface of the concave portion opposite to the surface in contact with the stator core. It is.

  According to the first aspect of the present invention, in a state where the insulator is attached to the stator core, an adhesive for fixing the winding of the stator coil and its end is injected into the recess from the through-hole of the insulator and injected into the recess. The insulator is fixed to the stator core by curing the adhesive. According to the first aspect of the present invention, since the adhesive is accumulated in the recess, a state in which the adhesive easily penetrates into the gap between the stator core and the insulator is obtained, and the adhesive force between the stator core and the insulator is increased. be able to. The adhesive includes varnish and sealant.

The invention according to claim 2 is an insulator fixed to a stator core of a resolver, wherein a surface of the insulator that contacts the stator core is provided with a recess for storing an adhesive, and the recess is a surface that contacts the stator core. A through-hole penetrating the surface opposite to the stator core is provided, and a terminal pin on which a winding wound around the salient pole of the stator core is arranged on a surface opposite to the surface contacting the stator core of the insulator. The resolver insulator is characterized in that the through hole is provided adjacent to the terminal pin.

The invention according to claim 3 includes a stator core and an insulator fixed to the stator core, and a surface of the insulator in contact with the stator core is provided with a concave portion in which an adhesive is accumulated, and the insulator is oriented in the direction of the stator core. The adhesive has a convex part protruding from the side surface of the concave part, and a through-hole penetrating the surface opposite to the surface in contact with the stator core is provided in the concave part, and the adhesive accumulates in the concave part. The resolver is characterized in that the insulator is fixed to the stator core.

The invention of claim 4 is the invention according to claim 3, wherein the stator core is provided with an opening in which the protrusion is fitted, the side surface of the front Kitotsu portion and the inner peripheral surface of the opening is in contact The concave portion faces the portion.

  According to the fourth aspect of the invention, the side surface of the convex portion on the insulator side contacts the inside of the opening on the stator core side, and the adhesive injected into the concave portion of the stator core penetrates the contact portion and penetrates. To do. For this reason, the side surface of the convex part of an insulator and the inner side of the opening part of a stator core are adhere | attached, and the intensity | strength of adhesion | attachment with a stator core and an insulator can be made high.

  The invention according to claim 5 includes a stator core and an insulator fixed to the stator core, wherein a surface of the insulator that contacts the stator core is provided with a recess, and the recess is opposite to the surface that contacts the stator core. A through-hole penetrating the side surface is provided, a terminal pin is disposed on the insulator, the stator core includes a salient pole around which a coil is wound, and the terminal pin includes a winding of the coil. A method of manufacturing an entangled resolver, the step of bringing the stator core and the insulator into contact with each other, the step of winding a coil around the salient pole, and winding the end of the winding of the coil around the terminal pin; And applying an adhesive to the terminal pin with which the coil and the winding of the coil are wound, and injecting the adhesive into the recess from the through hole Is a manufacturing method for a resolver, characterized in that it comprises a step.

  According to the fifth aspect of the present invention, the insulator is bonded to the stator core by using the step of fixing the winding of the coil and the binding portion of the wiring to the terminal pin with the adhesive. For this reason, in addition to the step of fixing the coil winding and the tie portion of the wiring to the terminal pin with an adhesive, a facility for fixing the insulator to the stator core (for example, for performing hot melt welding) Equipment) is not required.

  According to the present invention, an insulator for a stator core using an adhesive for fixing a stator coil and its wiring by allowing a concave portion to accumulate an adhesive and a through hole to function as an injection hole for the adhesive to the concave portion. Thus, there is provided a resolver insulator structure capable of securely fixing the stator core and the insulator without increasing the number of steps.

It is a perspective view of a stator core. 2A is a perspective view of a non-contact surface side that does not contact the stator core 101, and FIG. 2B is a perspective view of a contact surface side that contacts the stator core 101. FIG. . FIG. 3A is an enlarged perspective view of the wiring lead-out portion 204 of the insulator, FIG. 3A is a perspective view of the wiring lead-out portion 204 corresponding to FIG. 2A, and FIG. 3B is a perspective view of FIG. It is a perspective view of the wiring drawer | drawing-out part 204 corresponding to. It is a figure of the state which attached the insulator to the stator core, FIG. 4 (A) is the perspective view, FIG.4 (B) is the top view seen from the back surface side of the figure shown by FIG. 4 (A). is there. It is the figure which expanded a part of the state which attached the insulator to the stator core, FIG. 5 (A) is a perspective view corresponding to FIG. 4 (A), FIG. 5 (B) corresponds to FIG. 4 (B). It is the top view seen from the back side.

(Constitution)
Hereinafter, embodiments using the invention will be described. FIG. 1 shows a stator core 101 of a resolver. The stator core 101 has a structure in which a plurality of punched thin steel plates are stacked. A plurality of salient poles (pole teeth) 102 are provided on the inner peripheral side of the stator core 101. A coil constituting a stator coil is wound around the salient pole 102. The stator coil includes an excitation coil and an output coil. Since the configuration of the stator coil and the rotor not shown is the same as that of a normal resolver, the description thereof is omitted.

  In FIG. 2, an insulator 201 is shown. The insulator 201 is made of an insulating resin material. 2A shows a non-contact surface side that does not contact the stator core 101, and FIG. 2B shows a contact surface side that contacts the stator core 101. FIG.

  Hereinafter, each part of the insulator 201 will be described. The insulator 201 has a substantially annular shape, and includes a salient pole insulating portion 203 that protrudes toward the contact surface with the stator core 101. The salient pole insulator 203 fits into the gap 103 between the salient poles 102 adjacent to the stator core 101 when the insulator 201 is attached to the stator core 101. The salient pole insulating part 203 prevents the winding of the stator coil wound around the salient pole 102 from being in direct contact with the stator core 101.

  The insulator 201 includes a wiring lead part 204. The wiring lead-out portion 204 is a portion for connecting a winding of the stator coil wound around the salient pole 102 and a signal line (not shown) from the outside of the resolver. Hereinafter, the structure of the wiring lead-out portion 204 on the non-contact surface side of the insulator 201 to the stator core 101 will be described. FIG. 3A shows an enlarged view of the wiring lead-out portion 204 on the non-contact surface side of the insulator 201 with respect to the stator core 101.

  As shown in FIG. 3A, a plurality of terminal pins 210 are erected on the non-contact surface side of the wiring lead portion 204 to the stator core 101. The terminal pin 210 is an electrode terminal with which the end of the winding to the stator coil is bound. Between adjacent terminal pins 210, a through hole 222 that penetrates to the back surface side is disposed. As will be described later, the through hole 222 is connected to a recess 221 provided on the surface side that contacts the stator core 101.

  Next, the structure of the wiring lead-out portion 204 on the contact surface side of the insulator 201 with the stator core 101 will be described. FIG. 3B shows an enlarged view of the wiring lead-out portion 204 on the contact surface side of the insulator 201 with respect to the stator core 101. As shown in FIG. 3B, on the contact surface side, the wiring lead-out portion 204 includes a wall-shaped convex portion 220 extending in the width direction. The side surface 220 a in the axial center direction of the convex portion 220 is an extended portion of the wall surface of the concave portion 221 that functions as a varnish reservoir, and the convex portion 220 is provided adjacent to the concave portion 221. Further, the convex portion 220 has a structure that fits into the opening 104 of the stator core 101 when the insulator 201 is mounted on the stator core 101 (see FIG. 4). The shape seen from the axial direction of the side surface 220a in the axial center direction of the convex portion 220 is a shape that matches the shape of the opening 104, so that the adhesion to the stator core 101 is enhanced. Further, a concave portion 221 having a depth of about 0.5 mm is provided adjacent to the inside of the convex portion 220 and is thin and flat. The concave portion 221 is provided with a through hole 222 that penetrates to the front side (contact surface side to the stator core 101).

  Although not shown in FIG. 2, another insulator (reference numeral 301 described later) having a shape obtained by removing the wiring lead portion 204 from the insulator 201 is prepared separately. This insulator is the same as the insulator 201 except that the wiring lead-out portion 204 is not provided.

(Assembly process)
Hereinafter, an example of the process of attaching the insulator 201 to the stator core 101 and further fixing both of them will be described. First, the stator core 101 is sandwiched between the insulator 201 shown in FIG. 2 and the insulator 301 without the wiring lead-out portion 204 to obtain the state shown in FIG. Note that FIG. 4B is a plan view seen from the back side of the surface shown in FIG. FIG. 5A shows an enlarged view of a part of FIG. 4A, and FIG. 5B shows an enlarged view of a part of FIG. 4B. Here, FIGS. 4 and 5 show an insulator 301 that has a structure in which the wiring lead-out portion 204 is removed from the insulator 201 and is paired with the insulator 201.

  When the insulator is attached to the stator core, the salient pole insulator 203 is fitted into the gap 103 between the salient poles. The same applies to the other insulator 301 in the pair. Further, the convex portion 220 (see FIG. 3B) of the insulator 201 is fitted into the opening 104 (see FIG. 1) of the stator core 101. In this way, a state where the insulator 201 is temporarily attached to the stator core 101 as shown in FIGS. 4 and 5 is obtained.

  Next, a wire is wound around the salient pole 102 insulated by the insulator to form an exciting coil and an output coil to be a stator coil. Further, the ends of the windings of the exciting coil and the output coil are drawn out to the terminal pin 210 erected on the wiring lead-out portion 204 of the insulator 201 and are entangled there. When the wiring around the stator coil is finished, a varnish that functions as an adhesive is applied to the coil and the entangled portion, and the applied varnish is cured. Thereby, the coil wound around the salient pole 102 is impregnated with varnish, the winding state is fixed, and the portion where the wiring of the terminal pin 210 is entangled is also fixed. In the operation of applying the varnish, the varnish is injected from the through hole 222 in FIGS. 4A and 5A into the recess 221 in FIG. 3B. The varnish injected into the recess 221 remains in the recess 221 due to its viscosity. The contact state between the stator core 101 and the insulator 201 is fixed by curing the varnish accumulated in the recess 221.

  The varnish preferably has an appropriate viscosity. For example, a urethane varnish is used. In addition to the varnish, any material having an adhesive function with an appropriate viscosity can be used. As such a material, for example, a material such as a sealant may be used.

  By the above-described steps, a state in which the insulator 201 is fixed to the stator core 101 is obtained. In this state, as shown in FIG. 5B, the side surface of the convex portion 220 (reference numeral 220a in FIG. 3B) contacts the wall surface (inner peripheral surface) 104a of the opening 104 of the stator core 101. Since this contact portion faces the recess 221 in FIG. 3B, the varnish accumulated in the recess 221 penetrates into the gap between the contact portions. For this reason, the part of this convex part 220 is fixed inside the opening part 104 of the stator core 101 by hardening a varnish. According to this fixing structure, the insulator 201 is fixed to the stator core 101 with the varnish in a three-dimensionally engaged state.

(Superiority)
According to the configuration of the above embodiment, in the varnish application process for fixing the tangled wiring portion to the stator coil and the terminal pin, the stator core and the insulator are also fixed simultaneously using the adhesive function of the varnish. For this reason, it is not necessary to introduce welding or hot melt equipment. In addition, since dedicated equipment is not required, it is easy to apply to a model with a small number of production.

  In addition, since the stator core and the insulator are fixed by using the work of fixing the coil or wire binding portion, which has been conventionally performed, with the varnish, the work is made efficient and the work time can be shortened.

  The present invention can be used for an insulator structure of a resolver.

101 ... Stator core 102 ... Salient pole (pole tooth)
DESCRIPTION OF SYMBOLS 103 ... Gap between pole teeth 104 ... Opening part 201 ... Insulator 203 ... Salient pole insulation part 204 ... Wiring extraction part 210 ... Terminal pin 220 ... Convex part 220a ... Side surface of convex part 221 ... Concave part 222 ... Through-hole 301 ... Insulator

Claims (5)

An insulator fixed to the resolver stator core,
The surface of the insulator in contact with the stator core is provided with a recess for storing an adhesive,
The insulator has a convex portion that protrudes in the direction of the stator core and has an extension of the wall surface of the concave portion as a side surface,
An insulator for a resolver, wherein the concave portion is provided with a through-hole penetrating a surface opposite to a surface in contact with the stator core. An insulator fixed to the resolver stator core,
The surface of the insulator in contact with the stator core is provided with a recess for storing an adhesive,
The recess is provided with a through-hole penetrating the surface opposite to the surface in contact with the stator core,
A terminal pin on which a winding wound around the salient pole of the stator core is arranged on a surface opposite to the surface in contact with the stator core of the insulator,
An insulator for a resolver, wherein the through hole is provided adjacent to the terminal pin . A stator core;
An insulator fixed to the stator core;
With
The surface of the insulator in contact with the stator core is provided with a recess for storing an adhesive,
The insulator has a convex portion that protrudes in the direction of the stator core and has an extension of the wall surface of the concave portion as a side surface,
The recess is provided with a through-hole penetrating the surface opposite to the surface in contact with the stator core,
The resolver, wherein the insulator is fixed to the stator core by the adhesive accumulated in the recess.
The stator core includes an opening into which the convex portion is fitted ,
The resolver according to claim 3 in which the side surface of the front Kitotsu portion and the inner peripheral surface of the opening, characterized in that the faces are the recessed portion contacting. A stator core;
An insulator fixed to the stator core,
A recess is provided on a surface of the insulator that contacts the stator core,
The recess is provided with a through-hole penetrating the surface opposite to the surface in contact with the stator core,
The insulator is provided with a terminal pin,
The stator core includes a salient pole around which a coil is wound,
The terminal pin is a method for manufacturing a resolver in which windings of the coil are entangled,
Contacting the stator core with the insulator;
Winding a coil around the salient pole, and tying the end of the coil winding to the terminal pin;
And a step of applying an adhesive to the terminal pin having the coil and the winding of the coil entangled and injecting the adhesive into the recess from the through hole.

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