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Electric actuator

A technology of electric actuators and rotation sensors, applied in the direction of electric components, electrical components, electromechanical devices, etc., to achieve the effect of suppressing mutual tilt

Pending Publication Date: 2022-04-12
NIDEC TOSOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned electric actuator, one of the motor shaft and the output shaft may be inclined relative to the other.

Method used

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Embodiment Construction

[0012] In each figure, the Z-axis direction is a vertical direction in which the positive side (+Z side) is the upper side and the negative side (−Z side) is the lower side. The axial direction of the motor axis J1 appropriately shown in each figure is parallel to the Z-axis direction, that is, the vertical direction. In the following description, the direction parallel to the axial direction of the motor axis J1 is simply referred to as "axial direction". In addition, the radial direction centered on the motor axis J1 is simply referred to as "radial direction", and the circumferential direction centered on the motor axis J1 is simply referred to as "circumferential direction".

[0013] In this embodiment, the lower side corresponds to "one side in the axial direction", and the upper side corresponds to "the other side in the axial direction". In addition, the up-down direction, upper side, and lower side are only names for describing the relative positional relationship of ...

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Abstract

An electric actuator is provided with: a motor having a motor shaft capable of rotating about a motor axis; a transmission mechanism connected to one side of the motor shaft in the axial direction; and an output shaft extending in the axial direction of the motor shaft, to which the rotation of the motor shaft is transmitted via a transmission mechanism. The motor shaft is a hollow shaft. At least a portion of the output shaft is located inside the motor shaft. One of the motor shaft and the output shaft rotatably supports the other of the motor shaft and the output shaft.

Description

technical field [0001] The present invention relates to electric actuators. Background technique [0002] There is known an electric actuator including a motor shaft and an output shaft connected by a transmission mechanism. For example, Patent Document 1 describes a rotary actuator applied as a power source of a shift-by-wire system for switching gears of an automatic transmission of a vehicle. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2016-109226 [0004] In the above-mentioned electric actuator, one of the motor shaft and the output shaft may be inclined relative to the other. Contents of the invention [0005] In view of the above circumstances, one object of the present invention is to provide an electric actuator having a structure capable of suppressing mutual inclination of a motor shaft and an output shaft. [0006] One aspect of the present invention is an electric actuator including: a motor having a motor shaft rotatable about a motor axis; a...

Claims

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Application Information

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IPC IPC(8): H02K7/116F16H57/023H02K7/08H02K5/16H02K11/215H02K11/22H02K11/225
Inventor 白井宽佐藤伦纪
Owner NIDEC TOSOK CORP