JP4496109B2 - Redundant resolver - Google Patents

Description

  The present invention relates to a redundant resolver, and in particular, a crossover of a plurality of system angle detection units is separately disposed in each holding unit formed on the annular insulating cover of the annular stator for each system angle detection unit, The present invention relates to a novel improvement for preventing a short circuit between systems and ensuring a redundant system so as not to deteriorate the function.

Conventionally used resolvers of this type include the configuration shown in Patent Document 1 and the like.
That is, when the resolver shown in Patent Document 1 is used as a redundant resolver including first and second system angle detectors, the configuration shown in FIGS. 5 and 6 is obtained.
5 and 6, reference numeral 1 denotes a ring-shaped stator, and each magnetic pole 1 a protruding inward of the ring-shaped stator 1 is positioned in a slot (not shown) between the magnetic poles 1 a. Thus, the stator winding 2 is wound.

  The stator winding 2 is divided into two parts at 0-180 degrees and 180-360 degrees of the ring-shaped stator 1 and is independent of each other. As shown by a lattice part and a white part in the figure, the first system angle detection unit 3 and A second system angle detection unit 4 is formed.

Crossovers 5 and 6 between the magnetic poles 1 a in the system angle detectors 3 and 4 are disposed on the first surface 1 A of the annular stator 1.
The system angle detectors 3 and 4 are independent of each other, and the same rotation detection signal is output from the system angle detectors 3 and 4 by rotating a rotor (not shown), and 2X (X is a shaft angle multiplier). The detection function is configured to be obtained.

US Pat. No. 5,920,135

Since the conventional redundant resolver is configured as described above, the following problems exist.
That is, since the connecting wires of each system angle detector are all mixed and arranged on the first surface side of the ring-shaped stator, the connecting wires of each system are superposed or crossed (contact portion in FIG. 6). There is a possibility that a short circuit between the systems may occur or the function of the resolver may deteriorate.

  A redundant resolver according to the present invention includes a ring-shaped stator having a plurality of projecting magnetic poles, and a plurality of system angle detectors provided on the ring-shaped stator via first and second ring-shaped insulating covers, In a redundant resolver in which the stator windings for the plurality of system angle detection units are not wound around the same magnetic pole, each of the stator windings of the plurality of system angle detection units across each magnetic pole of the stator winding The system connecting wire is configured to be separately held by a plurality of holding portions that are formed by partitioning one of the first annular insulating covers through an insulator, and each of the holding portions is the first The insulator is configured to be disposed outside each system angle detection unit of a single ring-shaped insulating cover, and each holding unit forms a ring shape in a ring-shaped recess formed in the first ring-shaped insulating cover. Is provided and formed Are, each holder has a configuration is formed in a state that is stacked in the axial direction of the annular stator.

Since the redundant resolver according to the present invention is configured as described above, the following effects can be obtained.
That is, the system crossover lines of the plurality of system angle detection units are arranged separately for each system angle detection unit in each holding part of the ring-shaped insulating cover, so that a short circuit between each system is prevented and a redundant system is provided. It can be ensured to prevent the resolver from deteriorating.

  In the present invention, system crossover lines of a plurality of system angle detection units are arranged separately for each system angle detection unit in each holding unit of the ring-shaped insulating cover to prevent a short circuit between the systems, and to provide a redundant system. It is an object of the present invention to provide a redundant resolver that is secured so as not to deteriorate the function.

Hereinafter, preferred embodiments of a redundant resolver according to the present invention will be described with reference to the drawings.
The same reference numerals are used for the same or equivalent parts as in the conventional example.
1 is a ring-shaped stator, and the magnetic poles 1a projecting inward of the ring-shaped stator 1 are positioned in slots (not shown) between the magnetic poles 1a. The stator winding 2 is wound through the first and second annular insulating covers 30 and 31. Each of the ring-shaped insulating covers 30 and 31 may be a separate body or may be integrally formed by injection molding.

  As an example, the stator winding 2 is divided into two parts at 0-180 degrees and 180-360 degrees of the ring-shaped stator 1 and is independent of each other. A detection unit 3 and a second system angle detection unit 4 are formed.

  The first system crossover 5 between the magnetic poles 1a in the first system angle detector 3 is the first one of the ring-shaped insulating covers 30 and 31 of the ring-shaped stator 1 as shown by the dotted line in FIG. A second system crossover line 6 that is arranged via a single ring-shaped insulating cover 30 (or the second ring-shaped insulating cover 31 is also acceptable) and crosses between the magnetic poles 1a in the second system angle detecting unit 4 is a solid line in FIG. As shown, the first annular insulating cover 30 is disposed.

  As shown in FIGS. 3 and 4, a ring-shaped recess 40 is integrally formed on the first ring-shaped insulating cover 30 on the outside of the first system angle detection unit 3 including the stator winding 2. The inside is partitioned into two upper and lower stages by an insulator 41 having a ring shape, and is formed in a ring-shaped first holding portion 40a and second holding portion 40b.

Each holding part 40a, 40b is formed in a state of being stacked in two upper and lower stages along the axial direction of the ring-shaped stator 1, the first system connecting wire 5 is held in the first holding part 40a, and the first The two-system connecting wire 6 is held in the second holding portion 40b.
Therefore, the system connecting wires 5 and 6 are insulated from each other by the insulator 41 so as not to cause a short circuit or the like.
The number of the holding portions 40a and 40b by the insulator 41 is not limited to two, but the number of the insulators 41 is increased according to the number of redundant systems, and the number of the holding portions 40a and 40b is increased. Can do.

  The stator windings 2 in the first and second system angle detectors 3 and 4 are wound only on the magnetic poles 1a in the system angle detectors 3 and 4, respectively. Only one of stator windings 3 and 4 is wound. Therefore, the stator windings 2 of the system angle detectors 3 and 4 are not mixed and wound around the same magnetic pole 1a.

  The system angle detectors 3 and 4 are independent of each other, and the same rotation detection signal is output from the system angle detectors 3 and 4 by rotating a rotor (not shown), and 2X (X is a shaft angle multiplier). The detection function is configured to be obtained.

  The detection signals of the system angle detectors 3 and 4 are configured to be output to the outside via a lead wire 20 located on the first surface 1A side of the annular stator 1.

  In the above-described configuration, the system angle detection units 3 and 4 have been described as being configured as two redundant systems every 180 degrees. For example, although not shown, the system angle detection units 3 and 4 are divided into four parts every 90 degrees. It is also possible to obtain a configuration such as a 4-redundant system by 8 or an 8-redundant system by 8 divisions every 45 degrees.

  The present invention can be applied to a multiple redundant system by using not only one annular stator but also a plurality of annular stators.

It is sectional drawing which shows the redundant type | system | group resolver by this invention. It is a left view of FIG. It is an enlarged view of the principal part of FIG. It is AA sectional drawing of FIG. It is sectional drawing which shows the conventional redundant type | system | group resolver. FIG. 6 is a left side view of FIG. 5.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ring-shaped stator 1a Magnetic pole 1A 1st surface 2 Stator winding 3 1st system | strain angle detection part 4 2nd system | strain angle detection part 5 1st system crossover line 6 2nd system | strain crossover line 30 1st ring-shaped insulation cover 31 2nd ring-shaped insulation Cover 40 Ring-shaped recess 40a First holding part 40b Second holding part 41 Insulator

Claims (3)

One annular stator (1) having a plurality of projecting magnetic poles (1a), and a plurality of system angles provided to the annular stator (1) via first and second annular insulating covers (30, 31) A redundancy unit provided with a detection unit (3,4), so that the stator winding (2) for the plurality of system angle detection units (3,4) is not wound around the same magnetic pole (1a) In the system resolver,
The system connecting wires (5, 6) extending between the magnetic poles (1a) of the stator winding (2) of the plurality of system angle detectors (3,4) are connected to one of the first annular insulating covers (30). A redundant resolver characterized in that the redundant resolver is separately held by a plurality of holding portions (40a, 40b) that are partitioned by an insulator (41).   The said holding | maintenance part (40a, 40b) is arrange | positioned on the outer side of each said system | strain angle detection part (3,4) of the said 1st ring-shaped insulation cover (30), The Claim 1 characterized by the above-mentioned. Redundant resolver.   Each of the holding portions (40a, 40b) is formed by providing the ring-shaped recess (40) formed in the first ring-shaped insulating cover (30) with the insulator (41) having a ring shape. 3. The redundant resolver according to claim 1, wherein (40a, 40b) are formed in a state of being stacked along the axial direction of the annular stator (1).

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