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公开(公告)号：US11251679B2
公开(公告)日：2022-02-15
申请号：US16711979
申请日：2019-12-12
Applicant: COAVIS
Inventor： Jung Kil Lee , Gyu Sang Yu , Dong Heon Mo , Hyun Tae Lee
Abstract: Provided is a brushless direct currency (BLDC) motor and a manufacturing method thereof, and more particularly, a brushless direct currency (BLDC) motor including a rotor rotated to drive an impeller and capable of reducing a defective rate of the motor due to a rotational imbalance by controlling a shape of a magnet portion included in the rotor, and a manufacturing method thereof.
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公开(公告)号：US10447121B2
公开(公告)日：2019-10-15
申请号：US15299232
申请日：2016-10-20
Applicant: COAVIS
Inventor： Hyun Tae Lee , Gyu Sang Yu , In Seok Sohn
Abstract: The present invention relates to a fuel pump for vehicle supplying power to a commutator and an armature through a brush to prevent the brush from shake, which comprises the brush, a spring mounted on a top of the brush, the commutator contacted to a bottom of the brush, a brush holder surrounding the brush and the spring, and a first hole formed for fuel flow at a front side of the brush holder in a rotational direction of the commutator based on the brush.
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Patent Agency Ranking
公开(公告)号：US10119509B2
公开(公告)日：2018-11-06
申请号：US14930312
申请日：2015-11-02
Applicant: COAVIS
Inventor： Gyu Sang Yu , Won Young Choi , In Seok Sohn
Abstract: A multi-stage fuel pump includes a casing having a fuel intake formed on one side thereof and a fuel discharge port formed on the other side thereof, and a plurality of impellers provided within the casing, having a plurality of blades disposed on a circumferential surface in an outward direction of the circumferential surface and having blade chambers formed between the blades and penetrating through upper and lower surfaces of the impellers to allow fuel to be discharged and introduced to and from upper and lower sides of the blades, and formed in multiple stages, wherein fuel intaken through the fuel intake according to rotation of the impellers is discharged to the fuel discharge port through the blade chambers of the impellers, and the numbers of the blades of each of the impellers are different, thereby reducing blade passage frequency (BPF) noise generated according to rotation of the impellers.
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公开(公告)号：US11658537B2
公开(公告)日：2023-05-23
申请号：US17103276
申请日：2020-11-24
Applicant: COAVIS
Inventor： Hyun Tae Lee , Gyu Sang Yu , Woo Keun Lee
CPC classification number: H02K3/522 , F04D13/0693 , H02K2203/09
Abstract: Provided are a motor and an electric pump having the same, the motor including: a stator having a center made hollow to vertically pass through its opposite surfaces; a rotor which is disposed to be spaced apart from an inner surface of the stator, and into which a drive shaft is inserted to its center; a terminal block including a frame coupled to an upper side of the stator, ribs extending radially inward from the frame, and a ring portion which is coupled to the ribs and into which an upper side of the drive shaft of the rotor is rotatably inserted; and a terminal coupled to the terminal block and electrically connected to the coil of the stator, wherein the terminal may be easily coupled to the coil of the stator included in the motor, and the stator and the rotor may be easily aligned with each other.
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公开(公告)号：US20210175767A1
公开(公告)日：2021-06-10
申请号：US17103276
申请日：2020-11-24
Applicant: COAVIS
Inventor： Hyun Tae Lee , Gyu Sang Yu , Woo Keun Lee
Abstract: Provided are a motor and an electric pump having the same, the motor including: a stator having a center made hollow to vertically pass through its opposite surfaces; a rotor which is disposed to be spaced apart from an inner surface of the stator, and into which a drive shaft is inserted to its center; a terminal block including a frame coupled to an upper side of the stator, ribs extending radially inward from the frame, and a ring portion which is coupled to the ribs and into which an upper side of the drive shaft of the rotor is rotatably inserted; and a terminal coupled to the terminal block and electrically connected to the coil of the stator, wherein the terminal may be easily coupled to the coil of the stator included in the motor, and the stator and the rotor may be easily aligned with each other.
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公开(公告)号：US10020696B2
公开(公告)日：2018-07-10
申请号：US15616829
申请日：2017-06-07
Applicant: COAVIS
Inventor： Gyu Sang Yu , Hyun Tae Lee , Wan Sung Pae
CPC classification number: H02K1/17 , F02M59/44 , H02K23/04 , H02K29/03 , H02K2201/03 , H02K2213/03
Abstract: Provided is a DC motor for a fuel pump for a vehicle. The DC motor for a fuel pump for a vehicle includes: a housing whose inside is hollow; a stator coupled to the inside of the housing and having a first permanent magnet whose N pole is disposed inwardly in a radial direction and a second permanent magnet whose S pole is disposed inwardly in a radial direction, the first permanent magnet and the second permanent magnet being spaced apart from each other to face each other; and a rotor disposed on an inside of the stator while being spaced apart from the stator, in which a first gap g1 between the first permanent magnet and the rotor is different from a second gap g2 between the second permanent magnet and the rotor, whereby a torque ripple that is a fluctuation width of a cogging torque is reduced.
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公开(公告)号：US20160123288A1
公开(公告)日：2016-05-05
申请号：US14930312
申请日：2015-11-02
Applicant: COAVIS
Inventor： Gyu Sang Yu , Won Young Choi , In Seok Sohn
CPC classification number: F02M59/16 , F04D5/006 , F04D5/007 , F04D13/0653 , F04D15/0005 , F04D29/669 , F05D2250/53
Abstract: A multi-stage fuel pump includes a casing having a fuel intake formed on one side thereof and a fuel discharge port formed on the other side thereof, and a plurality of impellers provided within the casing, having a plurality of blades disposed on a circumferential surface in an outward direction of the circumferential surface and having blade chambers formed between the blades and penetrating through upper and lower surfaces of the impellers to allow fuel to be discharged and introduced to and from upper and lower sides of the blades, and formed in multiple stages, wherein fuel intaken through the fuel intake according to rotation of the impellers is discharged to the fuel discharge port through the blade chambers of the impellers, and the numbers of the blades of each of the impellers are different, thereby reducing blade passage frequency (BPF) noise generated according to rotation of the impellers.
Abstract translation: 一种多级燃料泵，包括：壳体，其具有形成在其一侧的燃料吸入口和形成在其另一侧上的燃料排出口;多个叶轮，设置在壳体内，具有设置在周向表面上的多个叶片 在圆周表面的向外方向上，并且具有形成在叶片之间并且穿过叶轮的上表面和下表面的叶片室，以允许燃料被排出并从叶片的上侧和下侧引入并且形成为多个阶段 其特征在于，根据所述叶轮的旋转，通过所述燃料吸入口的燃料经由所述叶轮的叶片室被排出到所述燃料排出口，并且所述叶轮的叶片的数量不同，从而降低叶片通过频率 ）根据叶轮的旋转产生的噪声。
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