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Patent Searching and Data


Title:
BRUSHLESS WIPER MOTOR
Document Type and Number:
WIPO Patent Application WO/2016/167168
Kind Code:
A1
Abstract:
Provided is a 4-pole/6-slot design in which the stator 44 is of mirror-image symmetrical shape centered on the rotor 45, whereby axial runout of the rotor 45 can be minimized. The number of poles and the number of slots are set to the minimum necessary to minimize axial runout of the rotor 45, magnetic noise is brought into approximation with mechanical noise, and therefore the overall noise generated by the DR-side wiper motor 21 can be lowered in frequency, and low acoustic sensitivity [dB] in the vehicle cabin can be achieved. The stator 44 is affixed inside a housing 40, and the housing 40 is provided with attachment legs affixed to a vehicle-affixing part, whereby the stator 44, which is a source of magnetic noise, can be affixed to the vehicle exclusively via the housing 40. Therefore, it is possible to easily design a brushless wiper motor that is quieter.

Inventors:
KIMURA, Masaaki (2681 Hirosawacho 1-chome, Kiryu-sh, Gunma 55, 〒3768555, JP)
ANNAKA, Tomohiko (2681 Hirosawacho 1-chome, Kiryu-sh, Gunma 55, 〒3768555, JP)
KIMURA, Toshiyuki (2681 Hirosawacho 1-chome, Kiryu-sh, Gunma 55, 〒3768555, JP)
Application Number:
JP2016/061295
Publication Date:
October 20, 2016
Filing Date:
April 06, 2016
Export Citation:
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Assignee:
MITSUBA CORPORATION (2681, Hirosawacho 1-chome Kiryu-sh, Gunma 55, 〒3768555, JP)
International Classes:
H02K21/14; B60S1/08; H02K7/14
Foreign References:
JP2005041285A2005-02-17
JP2014195389A2014-10-09
Other References:
See also references of EP 3285378A4
Attorney, Agent or Firm:
TSUTSUI & ASSOCIATES (3F Shinjuku Gyoen Bldg, 3-10 Shinjuku 2-chome, Shinjuku-k, Tokyo 22, 〒1600022, JP)
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