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公开(公告)号：US12275560B2
公开(公告)日：2025-04-15
申请号：US18574288
申请日：2023-04-25
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Ryou Ootaka , Taiyo Miyazaki , Masayuki Iida , Hayanori Kadoguchi
Abstract: A packaging structure of the disclosure includes: a box in which a component is stored; and a holding member installed in the box, the holding member being configured to hold the component. The holding member includes: an undersurface portion that has a first opening portion into which the component is inserted and is placed on a bottom surface of the box; a top surface portion that has a second opening portion into which the component is inserted and is placed above the undersurface portion; and a first side surface portion connecting the undersurface portion and the top surface portion in an up-and-down direction. The holding member is formed by being bent along boundary lines between the first side surface portion, the undersurface portion, and the top surface portion, and is formed into two kinds of three-dimensional shapes that are mirror symmetric to each other, according to bending directions of the boundary line.
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公开(公告)号：US20250116326A1
公开(公告)日：2025-04-10
申请号：US18838234
申请日：2023-08-25
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Kazuyuki YAMAMOTO , Takashi TAI
IPC: F16H57/029 , F16H1/16 , F16H57/00 , F16H57/02 , F16H57/031 , F16H57/039 , F16H57/04 , F16J15/32
Abstract: A sliding surface sealing structure is a structure that seals a sliding surface between a rotating member that rotates about an axis and a sealing member that makes sliding contact with a circumferential surface of the rotating member, and includes: a wall surface configured to hold the sealing member between the wall surface and the circumferential surface of the rotating member; an opposing surface facing the sealing member with a gap therebetween; and a protruding portion protruding from the opposing surface toward the sealing member.
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公开(公告)号：US20250067330A1
公开(公告)日：2025-02-27
申请号：US18704927
申请日：2022-10-28
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Masakazu SUWA
Abstract: A helical gear (12) of the disclosure includes: a helical toothing portion (2) of which helical tooth traces are formed on an outer tubular surface of a cylindrical rim (1); and a lightening portion (3) formed in such a manner that an area of which distance to a shaft center (D) on one end surface of the rim (1) in an axial direction is equal to or less than a predetermined value is recessed toward the other end surface. Assuming that a ratio of a value obtained by subtracting a lightening thickness (H) of the lightening portion (3) from a thickness (G) of the rim (1) to a tooth thickness (J) of the helical toothing portion (2) is defined as a first ratio (P), and a ratio of a recess dimension (F) to a total length dimension (E) of the rim (1) in the axial direction is defined as a second ratio (Q), relationships between the first ratio (P) and two ends (m and n) of a range of the second ratio (Q) are P=12.628m−25.78 and P=9.8605n−88.24 where P: the first ratio [%], m: one end [%], and n: the other end [%].
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公开(公告)号：US20240405631A1
公开(公告)日：2024-12-05
申请号：US18704921
申请日：2023-05-30
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Takuya TAKAHASHI
Abstract: An outer rotor brushless motor includes: a shaft; a rotor; a stator; a tubular bushing at one side of the stator; an impregnated bearing at the other side of the bushing; and a washer rotatable integrally with the shaft. The bushing has: a fixed portion fixed to a core inner peripheral surface, the fixed portion having a first end surface facing a bearing end surface, and a first inner peripheral surface facing an outer peripheral surface with first clearance in between; and a housing having a second inner peripheral surface with a greater diameter than the first inner peripheral surface, on the one side of the fixed portion. An oil repellent finish is applied to a surface of the bushing. The washer is placed radially inward of the second inner peripheral surface. Second clearance greater than the first clearance is between the bearing end surface and the first end surface.
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公开(公告)号：US12149145B1
公开(公告)日：2024-11-19
申请号：US18704921
申请日：2023-05-30
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Takuya Takahashi
Abstract: An outer rotor brushless motor includes: a shaft; a rotor; a stator; a tubular bushing at one side of the stator; an impregnated bearing at the other side of the bushing; and a washer rotatable integrally with the shaft. The bushing has: a fixed portion fixed to a core inner peripheral surface, the fixed portion having a first end surface facing a bearing end surface, and a first inner peripheral surface facing an outer peripheral surface with first clearance in between; and a housing having a second inner peripheral surface with a greater diameter than the first inner peripheral surface, on the one side of the fixed portion. An oil repellent finish is applied to a surface of the bushing. The washer is placed radially inward of the second inner peripheral surface. Second clearance greater than the first clearance is between the bearing end surface and the first end surface.
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Patent Agency Ranking
公开(公告)号：US20240361153A1
公开(公告)日：2024-10-31
申请号：US18764383
申请日：2024-07-05
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Akira MATSUNAWA
Abstract: A resolver includes excitation coils and a detection coil. One of the excitation coils and the detection coil includes a sine coil and a cosine coil that transmit AC signals having phases of the electrical angle different from each other by 90 degrees. Further, the other coil is provided with an annular magnetic pole group in which a plurality of magnetic poles is disposed adjacent to each other in the circumferential direction at a facing face at which the rotor and the stator face each other. The plurality of sine coils and the plurality of the cosine coils are alternately disposed adjacent to each other in the circumferential direction at the facing face. The circumferential intervals between the magnetic poles included in the excitation coils and the detection coil are identical.
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公开(公告)号：US20240359870A1
公开(公告)日：2024-10-31
申请号：US18574288
申请日：2023-04-25
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Ryou OOTAKA , Taiyo MIYAZAKI , Masayuki IIDA , Hayanori KADOGUCHI
CPC classification number: B65D25/108 , B65D85/68 , B65D2585/6877
Abstract: A packaging structure of the disclosure includes: a box in which a component is stored; and a holding member installed in the box, the holding member being configured to hold the component. The holding member includes: an undersurface portion that has a first opening portion into which the component is inserted and is placed on a bottom surface of the box; a top surface portion that has a second opening portion into which the component is inserted and is placed above the undersurface portion; and a first side surface portion connecting the undersurface portion and the top surface portion in an up-and-down direction. The holding member is formed by being bent along boundary lines between the first side surface portion, the undersurface portion, and the top surface portion, and is formed into two kinds of three-dimensional shapes that are mirror symmetric to each other, according to bending directions of the boundary line.
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公开(公告)号：US12015309B2
公开(公告)日：2024-06-18
申请号：US17665594
申请日：2022-02-07
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Wataru Kusakabe , Yuya Iwasaki
CPC classification number: H02K1/2766 , H02K21/16
Abstract: A columnar core main body including a plurality of laminated cores having the same shape and that has a shaft hole on a rotation center side, a plurality of permanent magnets penetrate around the shaft hole of the core main body in an axial direction and is fixed in each of a plurality of magnet accommodating holes arranged in a circular shape in a circumferential direction, and protrusions in the magnet accommodating holes in one-to-one correspondence. The protrusion protrudes along the circumferential direction and comes into pressure contact with the permanent magnet accommodated in the magnet accommodating hole from the radially inner side. Each of the protrusions is defined by a protrusion forming space extending along the circumferential direction from a radially inner side surface of each magnet accommodating hole, and at least one of the protrusion and the protrusion forming space is on the magnetic pole center.
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公开(公告)号：US20230421014A1
公开(公告)日：2023-12-28
申请号：US18340031
申请日：2023-06-23
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Norihisa TANIKAWA , Kenji SHIRAKI , Sakie KAWAKAMI
CPC classification number: H02K5/1735 , F16C19/06 , F16C35/06 , H02K7/085 , H02K21/22 , F16C2380/26
Abstract: A holding structure includes a bearing holder including a cylindrical holder portion into which a ball bearing is internally fitted from one side in an axial direction of a shaft, and a positioning portion on another side in the axial direction of the holder portion and abutting on the ball bearing; and a mounting plate having a cylindrical mounting portion in which a portion of the holder portion is press-fitted. An inner surface of the holder portion includes an adhesion surface bonded to an outer peripheral surface of the ball bearing, a relief surface having an inner diameter larger than an inner diameter of the adhesion surface, and a step surface connecting the adhesion surface and the relief surface. An axial position of the step surface overlaps the ball bearing engaged to the bearing holder.
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公开(公告)号：US20220352791A1
公开(公告)日：2022-11-03
申请号：US17730193
申请日：2022-04-27
Applicant: MABUCHI MOTOR CO., LTD.
Inventor： Tadayuki WAKITA
Abstract: A brush motor includes: a rotor core provided in a rotor; s teeth provided in the rotor core; s concentrated-winding coils with electric wires being respectively wound around the teeth; a commutator provided on the rotor in a relatively non-rotatable manner; c commutator pieces provided in the commutator and connected to the coils; p pairs of magnet magnetic poles provided on a stator and arranged to face the teeth; and a brush that is brought into sliding contact with the commutator pieces to supply a current to the coils, in which 0.5
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