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公开(公告)号：US10797561B2
公开(公告)日：2020-10-06
申请号：US15324282
申请日：2015-07-14
Applicant: Mitsuba Corporation
Inventor： Hirokazu Shoda , Yukiyoshi Iso , Osamu Nakamura
Abstract: In a brushless wiper motor, a rotor (33) is rotatably provided inside a stator (32) provided with a coil (32b), one end side of a rotation shaft (34) in the axial direction is fixed to the axial center of the rotor (33), a worm (35) is provided on the other end side of the rotation shaft (34) in the axial direction, the first and second bearings (36, 37) are respectively provided on one end side of the rotation shaft (34) in the axial direction and the other end side of the rotation shaft (34) in the axial direction than the worm (35) of the rotation shaft (34), the rotation shaft (34) is rotatably supported by only the first and second bearings (36, 37), and with the position of the first bearing (36) being defined as a reference position, a length thereof in the axial direction to the second bearing (37) is longer than a length thereof in the axial direction to the rotor (33). Since a commutator and other parts are not provided on a free end side of the rotation shaft (34), it is possible to provide a brushless wiper motor reduced in length of the rotation shaft (34), and reduced in inertial mass of the free end side of the rotation shaft (34).
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公开(公告)号：US10196043B2
公开(公告)日：2019-02-05
申请号：US15127047
申请日：2015-03-21
Applicant: MITSUBA Corporation
Inventor： Hirokazu Shoda , Toshiyuki Amagasa
IPC: B60S1/08
Abstract: A wiper system according to the present invention includes wiper blades (2a, 2b) that perform a reciprocating wiping operation on a windshield (3), and a raindrop sensor (9) that detects the current amount of rainfall based on water droplets adhering to the windshield (3). If rainfall more than or equal to a predetermined amount is detected by the raindrop sensor (9), a heavy rain mode in which a wiping range of the wiper blades (2a, 2b) is made narrower than in a normal wiping operation is carried out. In the heavy rain mode, the wiper blade (2a) arranged on the driver's side is activated at high speed (Hi) within a heavy rain time wiping area X set near the forward field of view of the driver to ensure the field of view of the driver.
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公开(公告)号：US20170207679A1
公开(公告)日：2017-07-20
申请号：US15324282
申请日：2015-07-14
Applicant: Mitsuba Corporation
Inventor： Hirokazu Shoda , Yukiyoshi Iso , Osamu Nakamura
IPC: H02K7/116 , B60S1/08 , H02K11/215 , H02K7/08 , H02K29/08
Abstract: In a brushless wiper motor, a rotor (33) is rotatably provided inside a stator (32) provided with a coil (32b), one end side of a rotation shaft (34) in the axial direction is fixed to the axial center of the rotor (33), a worm (35) is provided on the other end side of the rotation shaft (34) in the axial direction, the first and second bearings (36, 37) are respectively provided on one end side of the rotation shaft (34) in the axial direction and the other end side of the rotation shaft (34) in the axial direction than the worm (35) of the rotation shaft (34), the rotation shaft (34) is rotatably supported by only the first and second bearings (36, 37), and with the position of the first bearing (36) being defined as a reference position, a length thereof in the axial direction to the second bearing (37) is longer than a length thereof in the axial direction to the rotor (33). Since a commutator and other parts are not provided on a free end side of the rotation shaft (34), it is possible to provide a brushless wiper motor reduced in length of the rotation shaft (34), and reduced in inertial mass of the free end side of the rotation shaft (34).
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Patent Agency Ranking
公开(公告)号：US20160318483A1
公开(公告)日：2016-11-03
申请号：US15107584
申请日：2014-12-25
Applicant: MITSUBA Corporation
Inventor： Masaaki Kimura , Yukiyoshi Iso , Hirokazu Shoda , Hironori Ikeda
CPC classification number: B60S1/0811 , B60S1/0438 , B60S1/0472 , B60S1/166 , H02K7/1166 , H02K9/22 , H02K11/38
Abstract: A thermally-conductive member (60) is provided between a housing (53) and a FET module (54f) constituting a controller (54b), and used to release heat of the FET module (54f) to the housing (53). Therefore, heat of the FET module (54f) can be dissipated to outside via the thermally-conductive member (60) and the housing (53). Since the housing (53) is made of aluminum, a surface area of the housing (53) can be increased to become larger than the conventional cooling fin member, and heat of the FET module (54f) can be dissipated to outside, the DR-side wiper motor (21) can be reduced in size and improved in cooling efficiency. Furthermore, since a cooling fin member is not inserted in the case cover (54) in a conventional manner. Therefore, the case cover (54) can be molded with ease, and the wiper motor can be improved in assembly workability.
Abstract translation: 导热构件（60）设置在构成控制器（54b）的外壳（53）和FET模块（54f）之间，用于将FET模块（54f）的热量释放到壳体（53）。 因此，FET模块（54f）的热量可以经由导热构件（60）和壳体（53）散发到外部。 由于壳体（53）由铝构成，壳体（53）的表面积可以增加到比现有的冷却翅片构件大，并且FET模块（54f）的热量可以散发到外部，DR 侧刮水器马达（21）的尺寸可以减小并且提高冷却效率。 此外，由于冷却翅片构件没有以常规方式插入到壳体盖54中。 因此，可以容易地模制壳体盖（54），并且可以提高刮水器马达的组装操作性。
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公开(公告)号：US20160056686A1
公开(公告)日：2016-02-25
申请号：US14780184
申请日：2014-03-26
Applicant: MITSUBA CORPORATION
Inventor： Takeshi Kanai , Hiroto Tanaka , Tomohiko Annaka , Naoki Kojima , Hirokazu Shoda
CPC classification number: H02K7/116 , B60S1/166 , H02K5/02 , H02K5/16 , H02K5/18 , H02K5/22 , H02K7/1166 , H02K9/22 , H02K11/0073 , H02K11/33 , H02K2213/03
Abstract: A motor case (31) in which a stationary portion (35) is fixed, and a gear case (41) in which a gear mechanism (SD) is accommodated are made of aluminium, most heat generated from the stationary portion (35) at the time of actuation of a brushless wiper motor (20) can be directly dissipated outside from the motor case (31). That is, compared with conventional technique, heat transmitted to the motor case (31) can be efficiently dissipated outside, and the motor case (31) does not reach high temperature. Therefore, as a matter of course, reduction in size and weight can be achieved, suppression of electromagnetic noise can be achieved, and heat-resistance strength can be enhanced. Expensive components capable of resisting high temperatures are not required, and reduction in manufacturing cost can be achieved.
Abstract translation: 其中固定有固定部分（35）的马达壳体（31）和容纳有齿轮机构（SD）的齿轮箱（41）由铝制成，从固定部分（35）在 无刷电动机（20）的致动时间可以直接从电动机壳体（31）散发到外部。 也就是说，与传统技术相比，传递到马达壳体（31）的热量可以有效地散发到外部，并且马达壳体（31）不达到高温。 因此，当然可以实现小型化和轻量化，可以抑制电磁噪声，提高耐热强度。 不需要能够抵抗高温的昂贵的组件，并且可以实现制造成本的降低。
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公开(公告)号：US20170203722A1
公开(公告)日：2017-07-20
申请号：US15324304
申请日：2015-07-14
Applicant: Mitsuba Corporation
Inventor： Hirokazu Shoda , Yukiyoshi Iso , Osamu Nakamura
CPC classification number: B60S1/08 , H02K5/225 , H02K7/1166 , H02K11/30 , H02K11/38 , H02K15/02 , H02K15/14 , H02K21/14 , H02K21/16 , H02K29/08
Abstract: A gear side feeding terminal (73U, 73V, 73W) connected to a motor side feeding terminal (36U, 36V, 36W) provided to the end portion of a stator (32) in the axial direction of the stator (32) from the axial direction of a rotor (38) is provided on a control board (70) for controlling the rotor (38), housed in a gear case (61) so as to be stacked on a speed reduction mechanism (SD) from the direction crossing the axial direction of the rotor (38). In this manner, the wiper motor is composed of a brushless wiper motor (20), and it is unnecessary to provide the gear side feeding terminal (73U, 73V, 73W) so as to avoid the control board (70). Accordingly, it is possible to prevent electric noises, and provide a wiper motor reduced in size and weight, and since it is unnecessary to form a clearance in the control board (70), it is possible to provide a wiper motor further improved in degree of freedom for designing the control board (70).
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公开(公告)号：US10116186B2
公开(公告)日：2018-10-30
申请号：US14780184
申请日：2014-03-26
Applicant: Mitsuba Corporation
Inventor： Takeshi Kanai , Hiroto Tanaka , Tomohiko Annaka , Naoki Kojima , Hirokazu Shoda
IPC: H02K7/116 , H02K9/22 , B60S1/16 , H02K5/02 , H02K11/33 , H02K5/16 , H02K5/18 , H02K5/22 , H02K11/00
Abstract: A motor case (31) in which a stationary portion (35) is fixed, and a gear case (41) in which a gear mechanism (SD) is accommodated are made of aluminium, most heat generated from the stationary portion (35) at the time of actuation of a brushless wiper motor (20) can be directly dissipated outside from the motor case (31). That is, compared with conventional technique, heat transmitted to the motor case (31) can be efficiently dissipated outside, and the motor case (31) does not reach high temperature. Therefore, as a matter of course, reduction in size and weight can be achieved, suppression of electromagnetic noise can be achieved, and heat-resistance strength can be enhanced. Expensive components capable of resisting high temperatures are not required, and reduction in manufacturing cost can be achieved.
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公开(公告)号：US20170207684A1
公开(公告)日：2017-07-20
申请号：US15326060
申请日：2015-07-14
Applicant: Mitsuba Corporation
Inventor： Junichi Amanuma , Hirokazu Shoda , Yukiyoshi Iso
Abstract: A motor case part (30) having a stator (36) and a gear case part (50) having a reduction mechanism (SD) are integrally formed of the same material. In this manner, heat is directly dissipated from the motor case part (30) to the outside without the gear case part (30). Therefore, a brushless wiper motor (20) can be improved in heat radiation performance so as to enhance strength in high temperature can be realized. By manufacturing the motor case part (30) and the gear case part (50) from aluminum, while sufficient radiation performance is secured, a thickness thereof is made thin and lack in rigidity can be overcome. Furthermore, It is unnecessary to manufacture the motor case part (30) and the gear case part (50) individually and it is also unnecessary to perform pressing to a steel plate like the conventional art. Therefore, workability of the motor case part (30) and the gear case part (50) can be improved.
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