JP5309321B2 - Resolver winding insulation structure - Google Patents

Description

  The present invention relates to a resolver winding insulation structure, and in particular, winding different types of windings in each annular groove formed through a plurality of flanges on the outer periphery of a protruding resin portion provided on a protruding magnetic pole, The present invention relates to a novel improvement for measuring the improvement of mechanical characteristics.

As the winding insulation structure of this type of resolver used conventionally, for example, the configuration disclosed in Patent Document 1 can be exemplified by the configurations shown in FIGS.
That is, in FIGS. 7 to 9, what is denoted by reference numeral 1 is a known ring-shaped stator, and a plurality of projecting magnetic poles 2 projecting inward at predetermined angular intervals are formed on the inner surface 1a of the ring-shaped stator 1. ing.

A ring-shaped insulating cover 3 is provided integrally or separately on both surfaces of the ring-shaped stator 1, and a protruding resin portion 4 is formed on the inner surface of the ring-shaped insulating cover 3 so as to cover the outer periphery of the protruding magnetic pole 2. Yes.
A stator winding 3 is wound around the outer periphery of each projecting magnetic pole 2 via a projecting resin portion 4 of the ring-shaped insulating cover 3. The stator winding 3 includes a known excitation winding 5 c and an output first phase. The winding 5b and the output second phase winding 5a are configured.

US Pat. No. 6,750,577

Since the conventional winding insulation structure of the resolver is configured as described above, the following problems exist.
That is, the exciting winding, the output first phase winding, and the output second phase winding of the stator winding wound around the outer periphery of the projecting magnetic pole are wound in a laminated state. May come into contact with each other and short-circuit with a covered pinhole or the like, and it is difficult to hold the winding by the aligned winding.

The winding insulation structure of the resolver according to the present invention includes a plurality of projecting magnetic poles projecting inward from the inner surface of the annular stator at predetermined angular intervals, and an annular insulating cover provided integrally or separately on both surfaces of the annular stator. the annular insulating cover is formed with the protruding resin portion for covering at least the outer circumference of each projection pole, the multiple flange projecting outward from the outer circumferential surface formed on the outer peripheral surface of each projection resin portion parts and said at least three first formed in order from the distal end side of the protruding resin portion with the flange portion to the outer diameter side, a second, a third wheel-shaped groove, said first annular groove An excitation winding wound around, an output first phase winding wound around the second annular groove, and an output second phase winding wound around the third annular groove , in the winding insulation structure of the resolver, little formed in said central position of the flange portion outer peripheral surface of each flange portion Both the one notch, the the outer circumferential surface of the protruding resin portion along the longitudinal direction thereof is formed continuously one elongated rectilinear having a depth direction from the outer peripheral surface to the salient-pole And each notch and the longitudinal groove communicate with each other, and the longitudinal groove is provided with an end line or a connecting wire of each winding wound around the annular groove. The windings wound around the ring-shaped grooves and the end lines or the connecting wires in the longitudinal grooves because the depth of the longitudinal grooves is deeper than the depth of the ring-shaped grooves. is a non-contact cross orthogonal to each other, the inner bottom portion in the longitudinal direction of the elongated groove, Te over path shaped portion for guiding the end line or connecting wire is formed, and the respective notch the longitudinal-shaped groove is configured are polymerized with each other as viewed in the axial direction of the annular stator, also the butt Outer peripheral shape of the outer peripheral surface of the resin portion, a structure composed of square or rectangular in cross-section.

Since the winding insulation structure of the resolver according to the present invention is configured as described above, the following effects can be obtained.
That is, a plurality of projecting magnetic poles projecting inward from the inner surface of the annular stator at predetermined angular intervals, an annular insulating cover provided integrally or separately on both surfaces of the annular stator, and formed on the annular insulating cover A protruding resin portion for covering at least the outer periphery of each protruding magnetic pole, a plurality of flange portions formed on the outer peripheral surface of each protruding resin portion, and at least three annular grooves formed between the respective flange portions; An excitation winding wound around each annular groove to form a stator winding, an output first phase winding, and an output second phase winding, the excitation winding, the output first phase winding, and Since the output second phase winding is arranged independently for each ring-shaped groove, the winding of each phase can be surely isolated and wound with varnish. Even when there is not, it is possible to wind with alignment by applying tension. .
Further, at least one notch portion formed on the outer peripheral surface of the flange portion of each of the flange portions , and one longitudinal groove formed continuously along the longitudinal direction on the outer peripheral surface of the protruding resin portion. And each notch and the longitudinal groove are in communication with each other, and an end line or a crossover of each winding wound around each annular groove is disposed in the longitudinal groove. By doing so, it is possible to prevent contact between each phase winding and the end wire or the jumper wire, and to obtain a reliable resolver.
In addition, the outer peripheral shape of the outer peripheral surface of the protruding resin portion is square or rectangular in cross section, so that when winding with a needle, force acts on the windings at four angles, and the aligned windings It is done smoothly.
In addition, since the tapered bottom portion is formed on the inner bottom portion in the longitudinal direction of the longitudinal groove, it is easy to draw the end line and the crossover line provided in the longitudinal groove.
Further, the reliability of the signal system can be improved by making the windings wound around the ring-shaped grooves and the end lines or the crossover wires in the longitudinal grooves non-contact with each other.

  The present invention relates to a resolver in which different types of windings are wound around each annular groove formed on the outer periphery of a protruding resin portion provided on a protruding magnetic pole via a plurality of flanges, thereby improving electrical characteristics. An object of the present invention is to provide a winding insulation structure.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a resolver winding insulation structure according to the present invention will be described below with reference to the drawings.
In addition, the same code | symbol is attached | subjected and demonstrated to a part the same as that of a prior art example, or an equivalent part.
Further, since the configuration of the known resolver is the same except that the winding structure of the stator winding 5 with respect to the protruding magnetic pole 2 is different, the configuration of the resolver 10 (only the main part) in FIG. 8 is used. Shall.

  1 to 3 is a known ring-shaped stator, and a plurality of projecting magnetic poles 2 projecting inward at a predetermined angular interval are integrally formed on the inner surface 1a of the ring-shaped stator 1. Yes.

A ring-shaped insulating cover 3 is integrally or separately provided on both surfaces of the ring-shaped stator 1, and a protruding resin portion 4 is formed on the inner surface of the ring-shaped insulating cover 3 so as to cover the outer periphery of the protruding magnetic pole 2. Yes.
Wherein the outer peripheral surface 4a of the protruding resin portion 4, the flange portion 20 of the multiple projecting outward is integrally formed at predetermined intervals along the longitudinal direction A, with the respective flange portions 2 0 the first order of several from the distal end side 2A of the protruding resin portion 4 toward the outer side 1A, second, third wheel-shaped groove 21a, 21b, 21c are formed.

At the center position of the flange outer peripheral surface 22 of each flange 20 that forms each of the annular grooves 21a, 21b, and 21c, one notch 23 is formed, and each notch 23 is the protruding resin portion. 4 are formed in a straight line along the longitudinal direction A. The notches 23 and the longitudinal grooves 24 are overlapped with each other when viewed from the axial direction of the annular stator 1.

A linear longitudinal groove 24 is formed on the outer peripheral surface 4 a of the protruding resin portion 4 so as to communicate with the notches 23.
The depth of the groove of the longitudinal groove 24, if the previous SL viewed from flange outer peripheral surface 22, the further deeper than the depth of the grooves of each annular groove 21 a - 21 c, the longitudinal groove 24 is the protruding resin It is formed in a state of being cut from the outer peripheral surface 4a of the portion 4 to the inside. In addition, the outer peripheral shape of the said outer peripheral surface 4a is formed in square 4aA or the rectangle 4aB in the cross section. A depth D of the longitudinal groove 24 is formed from the outer peripheral surface 4 a toward the protruding magnetic pole 2.

The inner bottom portion 24a in the longitudinal direction A of the longitudinal groove 24 has a tapered portion 25 formed so as to rise from the bottom surface toward the outer peripheral surface 4a. 5A or the crossover 5B is arranged. The notches 23 and the longitudinal grooves 24 overlap each other when viewed from the axial direction of the annular stator 1.

Next, a case where the stator winding 5 is wound around each protruding magnetic pole 2 of the annular stator 1 via the protruding resin portion 4 via a needle of an automatic winding machine (not shown) in the above-described configuration will be described.
First, as shown in Figure 6, after rolling the excitation winding 5c before Symbol first ring-shaped groove 2 1a tooth inner diameter side or tip side 2A of the projecting magnetic poles 2, the end line 5A or connecting wire 5B Is disposed in the longitudinal groove 24 and is drawn to the outer diameter side 1A of the annular stator 1 and moved to the next protruding magnetic pole 2A side.

Then, before Symbol second wheel-shaped groove 21b, the needle turned output (not shown) the first phase winding 5b is wound, its end line 5A or crossover wire 5B via the longitudinal groove 24 As described above, it is drawn out to the outer diameter side 1A.
Further, the output second phase windings 5a are not shown in FIG. 5, as shown in FIG. 2, before SL in the same manner as described above in the third wheel-shaped groove 21c, output the second phase winding 5a is wound.

Accordingly, the windings 5a, 5b, 5c of the stator winding 5 wound around the protruding magnetic pole 2 as described above are completely separated and independent by the flanges 20, and the windings 5a, 5b, Since each end line 5A or connecting wire 5B of 5c is disposed in the longitudinal groove 24, the winding direction of these windings 5a, 5b, 5c and each end line 5A or connecting wire 5B is the same. Since the grooves 21a to 21c and 24 have different depths orthogonal to each other, the windings 5a to 5c and the end wire 5A or the crossover wire 5B can be prevented from crossing and contacting each other. Short circuit due to mutual damage or the like can be prevented.
Moreover, since the outer peripheral surface 4a of each ring-shaped groove 21a-21c is a square or a rectangle, it is easy to apply the tension at the time of winding, and an alignment winding can be performed easily.

  In addition, since the tapered portion 25 is formed on the inner bottom portion 24a on the outer diameter side 1A of the annular stator 1 in the longitudinal direction A of the longitudinal groove 24, the end line 5A or 5B is connected to the longitudinal groove 24 from the longitudinal groove 24. Smooth guidance is possible when retracting or withdrawing.

  In addition, since the windings 5a, 5b, and 5c are wound around the grooves 21a, 21b, and 21c with tension, the windings 5a, 5b, and 5c need not be hardened with a varnish as in the prior art. In addition, it is possible to maintain a state in which the ring-shaped grooves 21a, 21b, and 21c are firmly wound by aligned winding, suppress the generation of floating lines, prevent disconnection due to vibration, and eliminate impregnation and fixation of varnish agent As a result, heat shock resistance can be improved.

It is a top view which shows the coil | winding insulation structure of the resolver by this invention. It is sectional drawing which shows the case where a coil | winding is wound by the structure of FIG. It is AA sectional drawing of FIG. It is a perspective view which expands and shows FIG. It is sectional drawing of the principal part which shows the cross section of FIG. It is explanatory drawing which shows the winding process of the coil | winding insulation structure by this invention. It is sectional drawing which shows the winding insulation structure of the conventional resolver. It is AA sectional drawing of FIG. It is a perspective view which shows the principal part of the winding insulation structure of the conventional resolver.

DESCRIPTION OF SYMBOLS 1 Ring-shaped stator 1a Inner surface 2 Protruding magnetic pole 2a Outer periphery 3 Ring-shaped insulating cover 4 Protruding resin part 4a Outer peripheral surface 4aA Square 4aB Rectangular 5 Stator winding 5c Excitation winding 5b Output first phase winding 5a Output second phase winding 5A End line 5B Crossover 10 Resolver 20 Eaves 21a, 21b, 21c First, second and third annular grooves 22 Eaves outer peripheral surface 23 Notch 24 Longitudinal groove 25 Tapered part

Claims (2)

A plurality of projecting magnetic poles (2) projecting inward from the inner surface (1a) of the annular stator (1) at predetermined angular intervals, and an annular insulating cover provided integrally or separately on both surfaces of the annular stator (1) (3), a protruding resin portion (4) formed on the annular insulating cover (3) for covering at least the outer periphery of each protruding magnetic pole (2), and the outer peripheral surface (4a) of each protruding resin portion (4) said outer peripheral surface is formed) and (multiple flange portion protruding outward from 4a) (20), the distal-side (2A of the protruding resin portion with the flange portion (20) (4) ) at least three first formed in this order toward the outer diameter side (1A) from the second, third wheel shaped groove (21a, 21b, and 21c), wound around said first annular groove (21a) Excitation winding (5c), output first phase winding (5b) wound around the second annular groove (21b), and output two phase wound around the third annular groove (21c) Eye winding (5c),
In the winding insulation structure of the resolver with a
The longitudinal direction of at least one notch (23) formed at the center of the flange outer peripheral surface (22) of each flange (20) and the outer peripheral surface (4a) of the protruding resin portion (4) A straight longitudinal groove (24) formed continuously along the outer surface and having a depth (D) from the outer peripheral surface (4a) toward the protruding magnetic pole (2), Each notch (23) and the longitudinal groove (24) are in communication with each other, and each of the windings wound around the annular grooves (21a to 21c) in the longitudinal groove (24) ( 5) the end line (5A) or the crossover line (5B) is disposed, and the depth of the longitudinal groove (24) is deeper than the depth of the ring-shaped grooves (21a, 21b, 21c). wherein each annular groove (21 a - 21 c) in the wound and are said windings (bodies 5a to 5c) and the longitudinal groove (24) of said end line (5A) or jumper wires (5B) is orthogonal to each other Crossed and contactless, the inner bottom (24a) in the longitudinal direction (A) of the longitudinal groove (24), the end line (5A) or the crossover (5B) Te over path shaped portion for guiding (25) is formed, said longitudinal groove (24) and the notch (23) that are polymerized with each other as viewed in the axial direction of the annular stator (1) Resolver winding insulation structure characterized by Peripheral shape is winding insulation structure of claim 1 Symbol placement of the resolver, characterized in that consists of a square (4aa) or rectangular (4ab) in the cross section of the outer peripheral surface (4a) of the protruding resin portion (4).

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