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| Electromagnetic vibrator and portable device employing the same |
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| Axial flow fan having a compact circuit board and impeller blade arrangement |
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| Rotary electric machine stator having individual removable coils |
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| Method for assembling and electrical connector assembly for a power tool |
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| Motor and a lateral pressure mechanism for the same |
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Servo motor integral with control apparatus
| Details |
Inventors: Mizutani, Takao;
Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: LaBalle; Clayton E.
Assistant Examiner:
Attorney, Agent or Firm: Sughrue, Mion, Zinn, Macpeak & Seas
A servo motor integral with a control apparatus has a servo motor section, an amplifier section and a partition body which constitutes a partition between an amplifier section and a servo motor section. The housing which contains the integrated apparatus provides support for the several elements of each section, including printed circuit board, bearings and position/velocity detector. The several elements are arranged, designed and appropriately sealed so that a low cost and effective apparatus results. |
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DETAILED DESCRIPTION In a servo motor integral with a control apparatus of the present invention, a partition body which constitutes a partition between an amplifier section and a servo motor section is provided, a housing which supports an opposite-to-load side bearing of the servo motor section and a portion which extends in the radial direction of the opposite-to-load side bearing from said housing are formed on the partition body, a printed circuit board in the amplifier section is fitted to the portion extending in the radial direction, a stationary portion of a detector which detects the velocity and/or rotary position of the servo motor section is fitted to the printed circuit board, and a rotary portion of the detector is disposed between the opposite-to-load side bearing of the servo motor section and a rotor core constituting a rotor.
In a servo motor integral with a control apparatus concerned with the present invention, the stationary portion of the detector is constituted by a signal processing circuit of the detector and an optical unit consisting of at least a semiconductor laser and a light receiving device.
The rotary portion of said detector is constituted by at least a rotary scale, and the optical unit and the rotary scale are opposed to each other with a required gap provided therebetween.
In a servo motor integral with a control apparatus concerned with the present invention, coil lead extensions of a stator constituting the servo motor section and molded by a resin are coupled with a connection formed integrally with said resin, and said connection is disconnectibly coupled with a connection fitted to the printed circuit board of the amplifier section.
In a servo motor integral with a control apparatus concerned with the present invention, the contact length of the connection formed integrally with the resin which molds the stator and the connection fitted to the printed circuit board of the amplifier section is shorter than the fitting length of the housing which supports the opposite-to-load side bearing of the servo motor section and the bearing supported by said housing
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