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Motor actuator

A technology of actuators and motors, applied in the direction of electric components, control of mechanical energy, magnetic circuit shape/style/structure, etc., can solve problems such as poor startup

Inactive Publication Date: 2018-07-31
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, if the teeth of the same shape are arranged at equal angular intervals in the circumferential direction, when the motor stops, the magnetic poles of the rotor will completely face the teeth, and when the motor starts, no rotational torque will be generated, resulting in poor startup.

Method used

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Experimental program
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Embodiment Construction

[0032] Hereinafter, embodiments of the present invention will be described in detail. In addition, "up and down" in the following descriptions refers to the figure 1 Waiting up and down. In addition, the "home position" refers to the position of each component when the motor 10 is not driven.

[0033] (Overall structure of the motor actuator 1)

[0034] figure 1 It is an explanatory diagram showing a power system in the motor actuator 1 to which the present invention is applied. Such as figure 1 As shown, the power system of the motor actuator 1 includes: a first transmission mechanism 2 , which transmits the power of the motor 10 to the driven part 90 ; and a second transmission mechanism 3 , which makes the clutch device 30 work. The clutch device 30 switches the power transmission by the first transmission mechanism 2 into a continuous state or a disengaged state. If the clutch device 30 is in a continuous state, the power of the motor 10 is transmitted to the driv...

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PUM

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Abstract

Provided is a motor actuator in which both motor start-up failure and rotor vibration can be suppressed. Specifically, this motor actuator has a motor 10 that is formed from an AC synchronous motor, and a transmission mechanism that transmits the output from the motor 10, wherein the motor 10 has: a rotor 15 provided with a magnet 14 in which the S poles and the N poles are alternately provided inthe circumferential direction; and a stator core 12 provided with a plurality of teeth 18, each radially facing the magnet 14. The plurality of teeth 18 include a plurality of main poles 18a arrangedin the circumferential direction and interpoles 18b arranged between the circumferentially adjacent main poles 18a. The width dimension Wb of each interpole 18b is wider than one-half of the width dimension Wa of each main pole 18a but narrower than three-fourths of the width dimension Wa of each main pole 18a.

Description

technical field [0001] The invention relates to a motor actuator having a motor and a transmission mechanism. Background technique [0002] The actuator for driving the drain valve of the washing machine and the damper of the ventilating fan is composed of a motor actuator that transmits the rotation of the AC synchronous motor through a transmission mechanism. The AC synchronous motor includes: a rotor having magnets in which S poles and N poles are arranged alternately in the circumferential direction; and a stator core having a plurality of teeth facing the magnets in the radial direction. Here, if the teeth of the same shape are arranged at equal angular intervals in the circumferential direction, when the motor stops, the magnetic poles of the rotor will completely face the teeth, and when the motor starts, no rotational torque will be generated, resulting in poor startup. [0003] On the other hand, as a plurality of teeth, a structure is disclosed in which a pluralit...

Claims

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Application Information

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IPC IPC(8): H02K1/10H02K1/14H02K7/10
CPCH02K1/10H02K1/14H02K7/10
Inventor 有贺久刚
Owner SANKYO SEIKI MFG CO LTD