专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US11532973B2 Rotor core retaining jig, manufacturing device and manufacturing method for magnet embedded core 有权
公开(公告)号：US11532973B2
公开(公告)日：2022-12-20
申请号：US16478650
申请日：2018-10-11
申请人： Kuroda Precision Industries Ltd.
发明人： Masanobu Ikeda , Osamu Fukuyama , Tomoaki Murayama
IPC分类号： H02K15/03 , H02K1/28 , H02K15/12 , B29C45/14 , H02K1/276 , B29L31/00
摘要： To prevent the axial compressive force that acts on the rotor core from becoming unnecessarily large and to enable a high-quality magnet embedded core to be manufactured efficiently, a retaining jig (10) for a rotor core (2) including a magnet insertion hole (4) forming a through hole defining openings on end surfaces in an axial direction includes: a first plate (12) configured to contact against one of the end surfaces of the rotor core (2) and including a gate (20) configured to communicate with the corresponding opening of the magnet insertion hole (4); a second plate (14) configured to oppose another of the end surfaces of the rotor core (2); a closure member (26) coupled to the second plate (14) via a compression spring member (28) and configured to be capable of closing the opening of the magnet insertion hole (4) on the other of the end surfaces; and a coupling member (30) that couples the first plate (12) and the second plate (14) to each other such that the closure member (26) closes the opening and a spring force of the compression spring member (28) becomes a prescribed value.

2. 发明授权

US11355282B2 Manufacturing method for laminated iron core 有权
公开(公告)号：US11355282B2
公开(公告)日：2022-06-07
申请号：US16318412
申请日：2017-01-09
申请人： Kuroda Precision Industries Ltd.
发明人： Hironobu Okudaira , Hideo Horii , Kenichi Shindo
IPC分类号： H01F41/02 , H01F3/04 , B21D28/00 , H02K15/02
摘要： A manufacturing method for a laminated iron core includes conveying a sheet steel strip in an intermittent manner in a lift up state, with upward movement of the strip being limited by a guiding member provided on a lower holder; punching an outer shape of each iron core laminae; and applying adhesive agent to a surface of the strip before the punching. The adhesive agent is applied in a state in which a pilot pin is inserted in a pilot hole of the strip and when the strip is about to be pressed against or is being pressed against the die plate by a stripper provided on an upper holder. After application of the adhesive agent, the strip is returned to the lift up state by raising the upper holder, with a lifter and the stripper plate being in abutment with the lower and upper surfaces of the strip, respectively.

3. 发明授权

US11201526B2 Resin sealing device and resin sealing method for manufacturing magnet embedded core 有权
公开(公告)号：US11201526B2
公开(公告)日：2021-12-14
申请号：US16087675
申请日：2016-10-31
申请人： Kuroda Precision Industries Ltd.
发明人： Osamu Fukuyama
IPC分类号： H02K15/03 , H02K15/12 , B29C43/18 , H02K1/27 , H02K1/28 , H02K11/20 , H02K11/21 , H02K11/30 , B29C45/03 , B29C45/14 , B29C45/76 , B29C45/80 , F16H25/20 , H02K7/06 , B29K101/10 , B29K105/00 , B29L31/00
摘要： A magnet embedded core is manufactured in a stable manner by preventing an excessive pressurizing force from being applied to the laminated iron core and performing the clamping with an appropriate pressurizing force so that the leakage of the resin out of the magnet insertion holes can be minimized, and the reduction in the geometric and dimensional precision of the laminated iron core may be suppressed. An electric die clamping device is used, such that a laminated iron core is placed on one of a fixed die and a moveable die and upon clamping by the die clamping device, the other of the fixed die and the moveable die is caused to abut onto an end surface of the laminated iron core to close openings of magnet insertion holes and pressurize the laminated iron core in a laminating direction.

4. 发明授权

US11174924B2 Ball screw 有权
公开(公告)号：US11174924B2
公开(公告)日：2021-11-16
申请号：US16608940
申请日：2017-12-25
申请人： Kuroda Precision Industries Ltd.
发明人： Ryo Kaibe , Hitoshi Hakogi , Yoshimi Iwasaki , Tatsuto Omori
IPC分类号： F16H1/24 , F16H55/02 , F16H25/22
摘要： An end deflector includes a main portion including a ball delivery path that delivers balls between a rolling path and a ball return path, a tongue portion that guides the balls from the rolling path to the ball delivery path, and a pair of protruding pieces, that extend in the circumferential direction of each nut body from either side of the tongue portion with respect to the axial direction and define a ball guide groove that extends between the ball delivery path and the rolling path in cooperation with an inner circumferential surface of a deflector holding recess formed in a nut body, the main portion has an outer circumferential surface which opposes an inner circumferential surface of the deflector holding recess in the radial direction, a front-side portion of the outer circumferential surface with respect to a direction of insertion into the deflector holding recess is offset inward in the radial direction, and at least a rear-side portion of the outer circumferential surface with respect to the direction of insertion into the deflector holding recess is fitted to the inner circumferential surface of the deflector holding recess.

5. 发明申请

US20210234441A1 Manufacturing Device for Magnet Embedded Core 有权
公开(公告)号：US20210234441A1
公开(公告)日：2021-07-29
申请号：US15734606
申请日：2018-11-07
申请人： Kuroda Precision Industries Ltd.
发明人： Masanobu Ikeda , Tomoaki Murayama
IPC分类号： H02K15/03 , H02K15/12
摘要： To improve the abrasion resistance and releasability of the inner peripheral surfaces of a resin pot chamber, a gate, and the like in a manufacturing device for a magnet embedded core without using cemented carbide, the inner peripheral surface of the resin pot chamber (64), the inner peripheral surface of the gate (50), the outer peripheral surface of the plunger (62), and the like of the manufacturing device (10) for the magnet embedded core are constituted by chromium nitride layers (59, 65, 47) or the like.

6. 发明申请

US20210234440A1 Setting Device for Rotor Core Retaining Jig 有权
公开(公告)号：US20210234440A1
公开(公告)日：2021-07-29
申请号：US15734250
申请日：2019-03-12
申请人： Kuroda Precision Industries Ltd.
发明人： Tomoaki Murayama , Osamu Fukuyama , Masanobu Ikeda
IPC分类号： H02K15/03 , H02K15/12 , H02K1/27 , H02K1/28 , B29C45/14
摘要： To automate setting of coupling rods when using a rotor core retaining jig and thereby to improve the production efficiency of a magnet embedded core, a setting device includes: a support base (42) on which the rotor core retaining jig (10) is to be placed; an opposing base (46) joined to the support base 42 to oppose the support base (42); a pressurizing device (48) provided on the opposing base (46) and configured to pressurize an upper plate (14) of the rotor core retaining jig (10) on the support base (42) toward a lower plate (12); chuck devices (126) provided on the support base (42) to releasably grip the coupling rods (30) and capable of moving between a separated position where the coupling rods (30) are separated from engagement grooves (32, 34) and an engaged position where the coupling rods (30) engage the engagement grooves (32, 34); and a fluid pressure cylinder device (120) provided on the support base (42) to drive each chuck device (126) between the separated position and the engaged position.

7. 发明授权

US11038408B2 Method for manufacturing magnet embedded core 有权
公开(公告)号：US11038408B2
公开(公告)日：2021-06-15
申请号：US16073845
申请日：2017-03-24
申请人： Kuroda Precision Industries Ltd.
发明人： Osamu Fukuyama
IPC分类号： B29C43/18 , H02K15/12 , H02K15/03 , H02K1/27 , H02K1/28 , H02K11/20 , H02K11/21 , H02K11/30 , B29C45/03 , B29C45/14 , B29C45/76 , B29C45/80 , F16H25/20 , H02K7/06 , B29K101/10 , B29K105/00 , B29L31/00
摘要： To prevent the creation of unnecessary resin from the resin used for fixing the magnet, a device for manufacturing a magnet embedded core including a magnet embedded in resin filling a magnet insertion hole (104) extending axially in a motor core comprises a resin charging device (80) configured to charge the resin (114) in solid form into the magnet insertion hole (104), a magnet insertion device (90) configured to insert the magnet (110) into the magnet insertion hole (104), and a heating device (70) configured to heat the motor core (101) to melt the resin (114) in solid form received in the magnet insertion hole (104).

8. 发明申请

US20190195325A1 Ball Screw 审中-公开
公开(公告)号：US20190195325A1
公开(公告)日：2019-06-27
申请号：US16211860
申请日：2018-12-06
申请人： Kuroda Precision Industries Ltd.
发明人： Ryo Kaibe , Hitoshi Hakogi , Yoshimi Iwasaki , Tatsuto Omori
IPC分类号： F16H25/22
CPC分类号： F16H25/2219
摘要： To prevent the positional precision of the ball return passage and the tongue of the end deflector relative to the nut main body from being impaired by an axial force applied by a screw used for securing the end deflector to the nut main body, the end deflector includes a flange (32) provided at an axial end of a main part (30) of the end deflector and provided with an axial through hole (50) for receiving a screw which is threaded into the nut main body, and a rib (52) projecting from a radially inner edge of the flange to an inner side of the deflector receiving recess (26).

9. 发明授权

US10100908B2 Shaft end adapter and ball screw assembly 有权
公开(公告)号：US10100908B2
公开(公告)日：2018-10-16
申请号：US14392046
申请日：2012-11-30
申请人： KURODA PRECISION INDUSTRIES LTD. , Y.M. LABORATORY CO., LTD.
发明人： Toshiaki Ohno , Katsuhiko Sato
IPC分类号： F16H25/20 , F16H25/24 , F16B7/04
摘要： The assembly of a shaft member and a shaft end adapter which are manufactured separately can be accomplished with a high precision in coaxiality and straightness at a high efficiency. A tubular portion is formed with a circumferentially continuous portion at least in a part thereof adjoining a free end thereof, and a slit extends axially through a wall of the tubular portion in exclusion of the circumferentially continuous portion. A fastening bolt configured to close the slit is mounted on the tubular portion.

10. 外观设计

USD746116S1 Shaft adapter 有权
标题翻译：轴适配器
公开(公告)号：USD746116S1
公开(公告)日：2015-12-29
申请号：US29456134
申请日：2013-05-29
申请人： Kuroda Precision Industries Ltd.
设计人： Toshiaki Ohno , Katsuhiko Sato

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式