JP3313639B2 - Resolver winding method and structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resolver winding method and structure, and more particularly, to a resolver output signal accuracy by enabling a winding of a coil wound around each projecting magnetic pole to have an integral number of turns plus a half turn. To a new improvement to improve.

[0002]

2. Description of the Related Art Conventionally, as a resolver winding method of this type, a structure shown in FIGS. 3 and 4 is generally employed. That is, what is indicated by reference numeral 1 in FIGS. 3 and 4 is a ring-shaped stator (partially omitted in the drawings) which is entirely formed in a ring shape.
First to n-th slots 1a, 1b, 1n and n first
To n-th projecting magnetic poles 2a, 2b, 2n are formed alternately. On a first end face 3 which is a plane orthogonal to the axial direction of the annular stator 1, n first pins 4a, 4n are provided at outer positions corresponding to the slots 1a, 1b, 1n. It is sufficient that the first pins 4a to 4n are provided on the first end face 3 of the annular stator 1. However, the first pins 4a to 4n are provided on the second end face 3A which penetrates the annular stator 1 and faces the first end face 3. It is protruding.

Next, a conventional resolver winding method will be described. The number of turns of the resolver winding is determined so that the output voltage when the rotor is rotated can be obtained in a sin shape and a cos shape so that the output voltage characteristics are suitable according to the number of the magnetic poles 2a to 2n. The coil 5 is wound by a known distributed winding. In the case described above, the coil 5 is connected to the first pin 4
After a predetermined number of turns are applied to the first projecting magnetic pole 2a via the first crossover wire 5a, the first crossover wire 5a is used as the first crossover wire 5a.
A predetermined number of turns are applied to the second projecting magnetic pole 2b via the pin 4b, and the next projecting magnetic pole is wound. In this way, the coil is wound around all the projecting magnetic poles of the annular stator 1 by an automatic winding machine (not shown).

[0004]

The conventional resolver winding method has the following problems because it is configured as described above. That is, the number of turns of the coil wound around each protruded magnetic pole is an integer only because the crossover wire is guided via the pin only on the first end face side of the annular stator. . Therefore, in order to make the output voltage of the resolver as close as possible to sin-form and cos-form, it is desired to use a half turn.
Conventionally, since it is impossible, the coil is wound by rounding to an absolute value, such as 34 turns for 34.4 turns and 35 turns for 34.6 turns, rounded to an absolute value. Was. Therefore, the output voltage characteristic is sin-shaped,
It is difficult to faithfully follow the s shape, and an electrical error in the output voltage is likely to occur. At the same time, it has been extremely difficult to improve the product yield.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. In particular, the number of turns of a coil wound around each protruding magnetic pole can be set to an integer number of turns plus a half turn, so that a resolver output signal is obtained. It is an object of the present invention to provide a resolver winding method and a structure that improve the accuracy of the method.

[0006]

According to the resolver winding method of the present invention, a coil is wound around the outer circumferences of the first to n-th projecting magnetic poles of a ring-shaped stator having a whole ring shape and having slots and projecting magnetic poles alternately. A resolver winding method for guiding a crossover of said coil via a first pin provided on a first end face orthogonal to an axial direction of said annular stator, wherein a second pinion facing said first end face is provided. A second pin is provided on an end face, and a tip end of the coil wound around the first protruding magnetic pole via the first pin is half-turned to the first protruding magnetic pole, and then a second crossover wire is connected to the second pin. Through the first
A method of applying a half-turn winding to the first protruding magnetic pole by winding it around a second protruding magnetic pole adjacent to the protruding magnetic pole, wherein the whole stator has a ring shape and alternately has slots and projecting magnetic poles. A first and a second end face formed opposite to each other in a direction perpendicular to the axial direction of the annular stator; a first pin provided on the first end face;
A second pin provided on an end face, wherein a coil that has passed through the first pin as a first crossover is wound around a first projecting magnetic pole, and a tip of the coil passes through the second pin as a second crossover. This is the configuration.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a resolver winding method and structure according to the present invention will be described below with reference to the drawings. The same or equivalent parts as those in the conventional example will be described using the same reference numerals. 1 and 2 is a ring-shaped stator (a part of which is omitted in the drawings) as a whole, and the ring-shaped stator 1 has n first to n-th slots 1a, 1b, 1n. And n first to n-th projecting magnetic poles 2a, 2b, 2n are formed alternately. On a first end surface 3 which is a surface orthogonal to the axial direction of the annular stator 1, n first pins 4a, 4b, 4n are provided at outer positions corresponding to the slots 1a, 1b, 1n. . The first pins 4a to 4n penetrate the opposing second end face 3A from the first end face 3 and protrude to the opposite side to form n second pins 4A to 4N.

Next, the resolver winding method of the present invention will be described. The coil 5 starts to wind the first projecting magnetic pole 2a downward from the upper side after the first crossover wire 5a passes through the first pin 4a, performs a predetermined number of turns, and then does not cross the first pin 4b. To the second pin 4B as a second crossover 5b,
Next, a predetermined number of turns are applied to the adjacent second protruding magnetic poles 2b, starting to be wound upward from below. Therefore, as is apparent from FIG. 2, the coil 5 is wound from the first pin 4a side to the second pin 4B side, thereby making a half turn (ie, 0.5 rotation) with respect to the first projecting magnetic pole 2a. In the related art, the final winding of the coil 5 in units of one turn can be made in half turns.

[0009]

Since the resolver winding method and structure according to the present invention are configured as described above, the following effects can be obtained. That is, by passing the crossover of the coil wound around each protruding magnetic pole from the first pin formed on both end faces of the annular stator to the second pin, a half-turn coil winding, which was impossible in the past, is realized. For example, it is possible to calculate 34.5 turns when 34.6 turns and 34.4 turns are calculated, and it is possible to obtain sin and cos in comparison with a conventional winding having 35 turns and 34 turns. In this case, the electrical error in obtaining a linear output voltage curve can be reduced as compared with the related art, the output characteristics of the resolver can be improved, and the product yield can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a resolver winding method and structure according to the present invention.

FIG. 2 is an explanatory diagram showing a winding of a main part of FIG. 1;

FIG. 3 is a configuration diagram showing a conventional resolver winding method and structure.

FIG. 4 is an explanatory diagram showing a winding of a main part of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Annular stator 1a-1n Slot 2a 1st projecting magnetic pole 2b 2nd projecting magnetic pole 3 1st end surface 3A 2nd end surface 4a 1st pin 4B 2nd pin 5 Coil 5a 1st crossover 5b 2nd crossover

Claims (2)

(57) [Claims] 1. An overall ring-shaped and slot (1a-1)
n) and annular stator (1) having protruding magnetic poles (2a to 2n) alternately
A coil (5) is wound around the outer periphery of the first to n-th projecting magnetic poles (2a to 2n), and a first end surface (3) provided on a first end surface (3) orthogonal to the axial direction of the annular stator (1). In a resolver winding method in which a first crossover wire (5a) of the coil (5) is guided via a pin (4a), a second end face (3A) opposed to the first end face (3) is provided with a second end face (3A). Two pins (4B) are provided, and the tip of the coil (5) wound around the first projecting magnetic pole (2a) via the first pin (4a) is rotated half a turn to the first projecting magnetic pole (2a). Then, the second pin (4B) is wound around a second projecting magnetic pole (2b) adjacent to the first projecting magnetic pole (2a) via a second crossover wire (5b), whereby the first projecting magnetic pole (2b) is wound. A resolver winding method comprising applying a half-turn winding to the magnetic pole (2a). 2. The whole has a ring shape and slots (1a-1)
n) and annular stator (1) having protruding magnetic poles (2a to 2n) alternately
First and second end faces (3, 3A) formed to face each other in a direction orthogonal to the axial direction of the annular stator (1); and a first pin provided on the first end face (3). (4a) and a second pin (4B) provided on the second end surface (3A), and the coil (5) having passed through the first pin (4a) as a first crossover (5a).
Is wound around the first projecting magnetic pole (2a), and the tip of the coil (5) passes through the second pin (4B) as the second crossover (5b). Line structure.