Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1999-09-07
2000-10-03
LaBalle, Clayton
Electrical generator or motor structure
Dynamoelectric
Rotary
310194, 310216, H02K 352, H02K 338, H02K 346, H02K 106
Patent
active
061277533
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a stator of motors which is manufactured by winding a coil around a plurality of core segments which are coupled in series to compose coil phases and rounding the core segments into an annular body as well as a manufacturing method of the stator.
BACKGROUND ART
Under the recent trend to economize energies, attempts are being made to develop motors with a most important theme to improve efficiencies. A most difficult problem in these attempts to develop motors which have improved efficiencies lies in realization of windings which are formed at high spatial occupation ratios in stator slots.
A stator of a motor is manufactured by winding a wire around a cylindrical stator core which is subjected to an insulating treatment. However, the cylindrical form of the stator core makes a winding work tedious, and in winding works using nozzles for example, forms of windings and slots are restricted by shapes of the nozzles and driving loci of the nozzles, resulting in limited spatial occupation ratios of windings. To solve this problem, there has been disclosed a method to create a space which facilitates control of winding around a winding slot by winding a wire after coupling a plurality of core segments which are to compose a stator so as to form a serial body. (Japanese Patent Application Laid-Open No. 8-19196).
The serial body of core segments is composed, for example, of core segments 11 which are punched out as integral cores, laminated and coupled by way of easily deformable thin links 14 as shown in FIG. 4 or core segments 11 which consist of core sheets 10 punched out independently and laminated, have concave grooves 15 and convex pieces 16, and are assembled into a serial body by coupling the concave grooves 15 with the convex pieces 16 so as to be rotatable around coupled portions as shown in FIG. 5.
At a stage to form an annular body after winding a wire around a serial body 13 of core segments, a length of a connecting wire which connects coils of the core segments constitutes a factor important for forming the annular body. When the connecting wire is too long, it is overabundant and constitutes a cause for troubles such as seizure of the connecting wire at a stage to complete a motor. If it is too short, in contrast, it constitutes a cause for troubles such as wire breakage at a stage to form the annular body.
Further, it is practiced, as an ordinary method for winding a wire around the serial body 13 of core segments, to wind a coil for each phase around the core segments 11 sequentially one by one. FIG. 7(a) shows a conventional example to wind a wire around a serial body of core segments specified for three phases. After keeping a winding start terminal wire 22 on a terminal or the like arranged on No. 1 core segment, a coil for phase A is wound around Nos. 1, 4, 7 and 10 core segments, and a winding end terminal wire 22 is kept on a terminal or the like arranged on the No. 10 core segment to complete the winding of the coil for the phase A. Wires for phases B and C are wound in the similar procedures. Since the wires for the three phases are wound in series sequentially as described above, this winding method requires terminal treatments six times in total or a large number of winding steps.
The present invention provides a method to manufacture a stator by coupling a plurality of core segments so as to form a serial body of core segments and rounding the serial body into an annular body, which does not allow a connecting wire to be too long or too short between the core segments at a stage to round the serial body of core segments into the annular body as well as a stator which secures an optimum length of a connecting wire and a winding method which minimizes a number of steps to wind a wire around a serial body of core segments.
DISCLOSURE OF THE INVENTION
The member to form a motor stator according to the present invention consists of a plurality of core segments which are movably coupled, a plurality of insulators which cover the core se
REFERENCES:
patent: 2894157 (1959-07-01), Morrill
patent: 4350914 (1982-09-01), Searle
patent: 4365180 (1982-12-01), Licata et al.
patent: 5389846 (1995-02-01), Okazaki et al.
patent: 5477096 (1995-12-01), Sakashita et al.
patent: 5592731 (1997-01-01), Huang et al.
Okamoto Manabu
Seki Yasutake
Takasaki Kakue
Yamazaki Akihiko
LaBalle Clayton
Matsushita Electric - Industrial Co., Ltd.
Nguyen Tran N
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