JP4914981B2 - Flat type resolver - Google Patents

Description

  The present invention relates to a flat resolver, and in particular, an annular stator film laminate in which a pattern is formed on a film is attached to an annular stator core laminate in which a plurality of thin core pieces made of a magnetic material are laminated. It is related with the novel improvement for setting it as a flat type structure by setting it as the non-circular-shaped ring-shaped board body which does not have.

  As a flat type resolver structure of this type that has been used in the past, for example, there is a configuration disclosed in Patent Document 1, for example, in which a rotor has a winding and a rotary transformer is used to input and output signals. As a variable reluctance type using only a non-circular type rotor core that does not use a winding in the rotor, a configuration shown in Patent Document 2 is shown.

JP-A-6-229780 US Pat. No. 6,873,074

Since the conventional flat type resolver was configured as described above, the following problems existed.
In other words, in the case of the resolver structure disclosed in Patent Document 1, the thickness is about 16 mm, which is the structural limit.
In the case of the resolver structure disclosed in Patent Document 2, the thickness is about 10 mm and the rotor is not wound, so that the detection signal level is smaller than the structure of Patent Document 1 and the accuracy is high. (Electric error) was not good either.
These technical information can be found on the applicant's homepage, http: // www. tamagawa-seiki. co. jp single thin column.

  A flat resolver according to the present invention is provided on an inner wall of a cylindrical insulating case, and is formed of a magnetic material and a plurality of laminated stator core laminates, and is provided on the annular stator core laminate, and is formed of a film and laminated. An annular stator film laminate, a stator coil pattern formed on the annular stator film laminate and corresponding to each stator magnetic pole of the annular stator core laminate, and provided on the inner side of the annular stator core laminate, made of a magnetic material and coiled A ring-shaped rotor made of a non-circular ring-shaped plate body that does not include a ring-shaped rotor, and the ring-shaped rotor has a structure in which a shaft angle multiplier is any one of 1X to nX, and the stator coil The stator magnetic pole penetrates the stator through hole formed inside the pattern. In addition, the annular rotor, a configuration is provided in the hollow shaft in the cylindrical insulating case.

Since the flat resolver according to the present invention is configured as described above, the following effects can be obtained.
In other words, since the ring-shaped stator core laminate formed by forming a pattern on the film is attached to the ring-shaped stator core laminate formed extremely thin, it is ultra-thin (for example, the total thickness is 5 mm or less). Nevertheless, the detection signal level can be obtained sufficiently high, and high output and high accuracy can be achieved.

  In the present invention, an annular stator film laminate in which a pattern is formed on a film is attached to an annular stator core laminate in which a plurality of cores made of a magnetic material are laminated. An object of the present invention is to provide a flat resolver.

Hereinafter, preferred embodiments of a flat resolver according to the present invention will be described with reference to the drawings.
FIG. 1 shows a cross section of a flat resolver according to the present invention, and the overall thickness is set to 5 mm or less.
In FIG. 1, a reference numeral 1 denotes a cylindrical insulating case whose overall shape is a cylindrical shape, and a stepped portion 3 formed at the lower portion of the inner wall 2 of the cylindrical insulating case 1 has a ring-shaped stator core laminate. 4 is provided.

As shown in FIG. 3, the annular stator core laminate 4 is formed in a shape of about 1 mm thickness by laminating three core pieces 4a having a thickness of about 0.35 mm, for example. .
In this case, when one core piece 4a is formed with a thickness of 1 mm, horizontal and roundness is not easily generated. However, for example, by stacking three core pieces 4a, a thickness of 1 mm can be obtained. Horizontal and roundness can be easily obtained.

The annular stator core laminate 4 is provided with an annular stator film laminate 5.
The ring-shaped stator film laminate 5 is composed of a known flexible circuit, for example, the stator coil pattern 6 is formed on each of the three flexible films 5a by printing or etching, and these flexible films 5a are laminated together. By doing so, the annular stator film laminate 5 is configured.

The flexible film 5a of the annular stator film laminate 5 is configured as shown in FIGS.
That is, the stator coil pattern 6 on the surface of the flexible film 5a is formed around the slit-shaped stator through hole 7, and the end of the stator coil pattern 6 is led out to the back side of the flexible film 5a by the through hole 8. Are connected to the jumper wire 9.

Accordingly, as described above, by laminating the flexible films 5a on which the stator coil patterns 6 are formed, a winding action equivalent to that of a known resolver stator coil by the stator coil patterns 6 can be obtained.
Further, as shown in FIG. 5, when the annular stator film laminate 5 is attached to the annular stator core laminate 4, each stator magnetic pole 4 b of the annular stator core laminate 4 is inserted into the stator through hole 7 of the annular stator film laminate 5. The annular stator core laminated body 4 (corresponding to a conventional annular stator) having a stator coil pattern 6 (corresponding to a conventional stator coil) can be formed by projecting through.

  As shown in FIG. 1, a ring-shaped rotor 21 supported by a hollow shaft 20 that is a shaft is rotatably provided with the hollow shaft 20 inside the ring-shaped stator core laminate 4. 21 is formed by sintering or the like (VR variable reluctance type) and has a non-circular configuration for forming a resolver in the shape of FIGS. 6 to 9.

  Each ring-shaped rotor 21 is composed of 1X with a shaft angle multiplier of 1, 1X with FIG. 7, 2X with a shaft angle multiplier of 2, 4X with a shaft angle multiplier of 4, and FIG. 9 with 6X with a shaft angle multiplier of 6. A double-angle annular rotor 21 can be used.

It is sectional drawing which shows the flat type resolver by this invention. It is a block diagram which shows the annular stator core laminated body of FIG. FIG. 3 is a cross-sectional view of FIG. 2. FIG. 3 is a partial enlarged view showing the surface of the annular stator film laminate of FIG. 2. FIG. 3 is a partial enlarged view showing the back surface of the annular stator film laminate of FIG. 2. It is a block diagram which shows the plane and cross section which show the ring-shaped rotor of FIG. 1 as a pair. It is a block diagram which shows the other form of FIG. It is a block diagram which shows the other form of FIG. It is a block diagram which shows the other form of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylindrical insulation case 2 Inner wall 4 Ring-shaped stator core laminated body 4a Core piece 4b Stator magnetic pole 5 Ring-shaped stator film laminated body 5a Flexible film 6 Stator coil pattern 7 Stator through-hole 20 Hollow shaft 21 Ring-shaped rotor

Claims (4)

  An annular stator core laminate (4) provided on the inner wall (2) of the cylindrical insulating case (1) and made of a magnetic material, and a plurality of laminated stator core laminates (4), and provided on the annular stator core laminate (4) and made of a film A plurality of laminated annular stator film laminates (5) and a stator coil pattern (6) corresponding to each stator magnetic pole (4b) of the annular stator core laminate (4) formed in the annular stator film laminate (5) And a ring-shaped rotor (21) which is provided inside the ring-shaped stator core laminate (4) and which is made of a magnetic material and is made of a non-circular ring-shaped plate having no coil. Type resolver.   2. The flat resolver according to claim 1, wherein the annular rotor (21) has a shaft angle multiplier of 1X to nX.   The flat resolver according to claim 1 or 2, wherein the stator magnetic pole (4b) passes through a stator through hole (7) formed inside the stator coil pattern (6).   The flat resolver according to any one of claims 1 to 3, wherein the annular rotor (21) is provided on a hollow shaft (20) in the cylindrical insulating case (1).

Images