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Patent Searching and Data


Title:
DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/167554
Kind Code:
A1
Abstract:
In the present invention, a drive unit 4 comprises: a permanent magnet 5 that is attached to a needle 3 serving as a rod-shaped part; two movable elements 6,7 connected to both ends of the permanent magnet 5; a first electromagnetic coil unit 55; and a second electromagnetic coil unit. The first electromagnetic coil unit 55 includes: a stator 16 facing a top surface 6a of the first moving element 6; a stator 17 facing a top surface 7a of the second moving element 7; two coil yokes 13 that connect between the stators 16,17 on a side of the needle 3; and a coil 15 that is wound around each coil yoke 13. One stator 21 of the second electromagnetic coil unit faces a bottom surface 7b of the second moving element 7b, and the other stator 22 faces a bottom surface 6b of the first moving element 6. An energization control unit 60 controls the energization of the coils 15 so that a reverse magnetic force is generated between the stators 16 and 22 and a reverse magnetic polarity is generated between the stators 17 and 21. Due to this configuration, provided is a drive device which moves a rod-shaped part such as a needle in the axial direction and with which the thrust of the rod-shaped part can be increased.

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Inventors:
FUJIMURA, Yoshio (4-3-20, Imojima, Gifu-sh, Gifu 34, 〒5008234, JP)
KITAGAWA, Wataru (29 Aza Kiichi, Gokiso-cho, Showa-ku, Nagoya-sh, Aichi 61, 〒4660061, JP)
TAKESHITA, Takaharu (29 Aza Kiichi, Gokiso-cho, Showa-ku, Nagoya-sh, Aichi 61, 〒4660061, JP)
Application Number:
JP2019/003796
Publication Date:
September 06, 2019
Filing Date:
February 04, 2019
Export Citation:
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Assignee:
WAKO ENGINEERING CO., LTD. (4-3-20, Imojima Gifu-sh, Gifu 34, 〒5008234, JP)
NAGOYA INSTITUTE OF TECHNOLOGY (29 Aza Kiichi, Gokiso-cho Showa-ku, Nagoya-sh, Aichi 61, 〒4660061, JP)
International Classes:
H01F7/122; B05C5/00; H01F7/16
Attorney, Agent or Firm:
HARIKAWA, Takashi (SUGAWARA & ASSOCIATES, Sakae Yamakichi Bldg. 9-30, Sakae 2-chome, Naka-ku, Nagoya-sh, Aichi 08, 〒4600008, JP)
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