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公开(公告)号：US10079519B2
公开(公告)日：2018-09-18
申请号：US15210340
申请日：2016-07-14
申请人： NIDEC CORPORATION
CPC分类号： H02K5/148 , H02K5/1732 , H02K5/225
摘要： A motor may include a shaft, an armature, a commutator, a bearing, a housing, a bracket, and a brush card assembly. The brush card assembly may include a brush contacting the commutator, and a brush card holding the brush. The bracket may include a bracket bottom portion covering at least a portion of a lower side of the brush card, a cylindrical bracket cylindrical portion extending upwardly from a radially outer edge of the bracket bottom portion, a bearing holding portion extending upwardly from the bracket bottom portion at a radially inner side of the bracket cylindrical portion, and holding the bearing, and a rib positioned above the bracket bottom portion, and extending radially outward from the bearing holding portion.
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2.发明授权公开(公告)号：US10411546B2
公开(公告)日：2019-09-10
申请号：US15075949
申请日：2016-03-21
申请人： Nidec Corporation
摘要： A motor may include an armature; a cylindrical housing; a brush card assembly; a cylindrical bracket positioned under the brush card assembly and directly fixed to the housing; and a seal member made of elastomer. The brush card assembly may include a cylindrical portion and a flange portion. The seal member may include a first seal portion fitted between the top surface of the flange portion and the housing, or the bottom surface of the flange portion and the bracket, in an axial direction while contacting the top surface and the housing or the bottom surface and the bracket. At least one of a radially inner surface of the housing and a radially inner surface of the bracket may include an inclined surface. The first seal portion may be fitted between the housing and the bracket through the inclined surface while contacting the housing and the bracket.
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公开(公告)号：US10389201B2
公开(公告)日：2019-08-20
申请号：US15075909
申请日：2016-03-21
申请人： Nidec Corporation
摘要： A motor may include an armature; a cylindrical housing; a brush card assembly; a cylindrical bracket positioned under the brush card assembly and fixed to the housing; and a seal member positioned between the housing and the bracket and made of elastomer. The housing and the bracket may be made of metal. The brush card assembly may include a cylindrical portion and a flange portion. The seal member may include an upper portion and a lower portion. A housing lower end surface and a bracket upper end surface may face each other. The housing lower end surface and the bracket upper end surface may include contact portions contacting and separation portions separated in the axial direction. The motor may include a radial opening positioned axially between the separation portions and open in a radial direction. The seal member may include an intervening portion positioned in the radial opening.
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