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公开(公告)号：US20220368186A1
公开(公告)日：2022-11-17
申请号：US17765545
申请日：2020-09-25
发明人： Stefan REUTER , Ralf WITTSTADT
摘要： A coil element for a coil of an electric machine having at least two conductor elements extending parallel for arrangement in slots of a coil body and at least one connection portion that connects the two conductor elements to one another. The conductor elements and the connection portion are integrally formed. A bending position in a plane defined by the two conductor elements is provided only at a transition from a conductor element to the connection portion, and the connection portion extends in a straight line.
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公开(公告)号：US11496028B2
公开(公告)日：2022-11-08
申请号：US16896023
申请日：2020-06-08
发明人： Seungkyu Jang
摘要： A hairpin type of stator coil forming apparatus includes a first forming machine configured to form a vertex in a material coil so that a central portion of the material coil protrudes upward, and to form inclined portions inclined to both sides of the vertex, a second forming machine configured to receive the material coil bent-formed by the first forming machine and to form a front/rear bent portion in the material coil by bending one inclined portion and a portion of the other inclined portion based on the vertex, and a third forming machine configured to receive the material coil bent-formed by the second forming machine and to roundly form the inclined portions in front and rear directions.
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公开(公告)号：US20220352795A1
公开(公告)日：2022-11-03
申请号：US16765689
申请日：2018-11-22
发明人： Frederik SCHMID , Ralf RAUSCHER
摘要： A bending unit for bending a bend of a wave winding for a coil winding of an electric machine, having a first holding element for holding a first segment of a wire to be bent, a second holding element for holding a second segment of the wire to be bent and at least one bending mold for bending a transition region of the wire between the first segment and the second segment. The first and the second holding elements are in engagement with each other via at least one mechanical control cam to control a relative pivoting and a relative displacement of the first and the second holding element. Furthermore, a bending device having a plurality of such bending units, a wave winding production apparatus having a plurality of bending units which are synchronized via control cams, and a bending method and a wave winding production method are described.
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公开(公告)号：US20220345011A1
公开(公告)日：2022-10-27
申请号：US17762705
申请日：2020-09-01
申请人： NIDEC CORPORATION
发明人： Hibiki TAKADA , Tomoya UEDA , Takahiro HIWA
摘要： A stator includes: a stator core including teeth; pins including a working portion extending in an axial direction in a slot between the teeth; and bus bars electrically connected to the pins. In each slot, the working portions are disposed over stages in a radial direction. The pins include the two working portions disposed across the teeth, a first pin and a second pin each including a connection portion connecting the working portion in a circumferential direction, and a third pin connected to the bus bar. Each of the working portions of the second pin and the third pin is disposed in one of an outermost stage and an innermost stage of the slot. A number of teeth straddled by the second pin is smaller than a number of teeth straddled by the first pin.
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公开(公告)号：US20220286033A1
公开(公告)日：2022-09-08
申请号：US17648703
申请日：2022-01-24
发明人： Satoshi IMAMORI , Terukazu AKIYAMA
摘要： An armature includes a plurality of cores arranged in a straight line and discontinuous with each other, a plurality of coils wound around each of the cores, and a holding section configured to hold the cores. At least one of the cores include division cores separate from each other and arranged in an axial direction thereof. Each of the division cores has a flange at a contact surface thereof that is in contact with the holding section, and at least a portion of the contact surface protrudes toward the holding section to form the flange.
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公开(公告)号：US11411477B2
公开(公告)日：2022-08-09
申请号：US16907981
申请日：2020-06-22
申请人： Yoshio Kato
发明人： Yoshio Kato
IPC分类号： H02K15/085 , H02K15/04 , H02K3/12 , H02K15/02 , H02K15/00
摘要： A coil insertion method includes winding U-phase, V-phase, and W-phase coils; inserting the U-phase, V-phase, and W-phase coils into a transfer block, such that the U-phase, V-phase, and W-phase coils are held in a plurality of holding grooves of the transfer block so as to spirally overlap, the transfer block having a columnar shape, and the holding grooves being formed in radial fashion around the transfer block so as to open from a center part of the transfer block toward an outer periphery thereof; inserting the transfer block into an inner periphery of the stator core; and pushing a side part of the coils held in the holding grooves radially outward toward predetermined slots of the stator core so that the coils are inserted from the inner peripheral side of the stator core into the slots.
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公开(公告)号：US11387720B2
公开(公告)日：2022-07-12
申请号：US16241201
申请日：2019-01-07
发明人： Keiichiro Oka
摘要： A wave winding coil (9) has a first linear part (11a), second linear part (11b), arm part (12) and turn part (13). A retaining apparatus (1) retains the first linear part (11a) along the axis line direction between middle pins (3b, 3b) of a middle body part (3), and retains the second linear part (11b) between upper pins (2b, 2b), middle pins (3b, 3b), and lower pins (4b, 4b), in a state where sections of both ends of the second linear part (11b) in the axis line direction deviate to each other in circumferential opposite sides of the wave winding coil (9) to the axis line direction of the wave winding coil (9) and in a state where a bent angle θb′ between the second linear part (11b) and the connecting part is smaller than a bent angle θa′ between the first linear part (11a) and the connecting part.
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公开(公告)号：US11383283B1
公开(公告)日：2022-07-12
申请号：US16007526
申请日：2018-06-13
发明人： Joseph Timothy Clark
IPC分类号： B21C47/02 , B21C51/00 , G01B11/04 , H01F41/094 , H01F41/096 , H02K15/04 , G01D21/00
摘要： Methods, apparatus, systems, and computer-readable media are provided for tracking amounts of wires provided to a winding head during a winding operation of a wire distribution system. The wires can be tracked using one or more wire tracking devices that can be disposed at one or more locations within the wire distribution system. The wire tracking devices can provide information related to the amounts of wires and the types of wires being used to wind about a winding head/form. The information can be used to check for errors during a winding operation and indicate the progress of the winding operation. The information can also be used to update wire-availability data to reflect the amount of wire that has been provided during the winding operation.
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公开(公告)号：US11349378B2
公开(公告)日：2022-05-31
申请号：US16892864
申请日：2020-06-04
发明人： Yuji Miyazaki , Noburo Miyawaki
IPC分类号： H02K15/04
摘要： A cutting unit has a support member having insertion holes, and a movable member having through holes connected thereto. The respective left sides of upper surfaces of the square through holes are first movable blades, and the respective right sides thereof are second movable blades. Firstly, the movable member 14 is moved to the right by a predetermined amount to cut peeled-off portions of segment end portions only, and then the movable member is moved to the left by a predetermined amount to cut peeled-off portions of the segment end portions only. Distal ends of the coil segments can be cut into a uniform length to enable high quality welding, through this process.
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公开(公告)号：US11342822B2
公开(公告)日：2022-05-24
申请号：US16360292
申请日：2019-03-21
摘要： A bending apparatus (10) includes an upper first die (11), an upper second die (12), a lower die (13), a control unit (20), an upper first moving mechanism (21), an upper second moving mechanism (22), a lower moving mechanism (23), a holding die (31), and a moving and rotating mechanism (32). The lower die (13) is moved in an upper direction after the upper first die (11) and the upper second die (12) are moved to the front, whereby four coil segments (4) are bent. When the upper second die (12) is moved to a first withdrawal position in the rear direction after the four coil segments (4) are bent, a working space for the holding die (31) is ensured.
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