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Rotor of electric motor

An electric motor and rotor technology, which is applied in the field of electric motor rotors, can solve problems such as the deviation of fixed support rotor cores and the inability to reliably fix the rotor cores.

Inactive Publication Date: 2014-03-05
NISSAN MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to deviations in the inner diameter of the rotor core, the outer diameter of the rotor shaft, and press-fit conditions, in the fixing method of JP62-237155A, there is also a tendency to cause deviations in the force for fixing and supporting the rotor core. In such a case that the rotor core cannot be fixed reliably

Method used

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  • Rotor of electric motor
  • Rotor of electric motor
  • Rotor of electric motor

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Embodiment Construction

[0017] figure 1 It is a configuration diagram of the rotor of the electric motor to which the fixing structure according to the embodiment of the present invention is applied. In the description below, the figure 1 The left direction in the drawing is defined as the axial base end side, and the right direction in the figure is defined as the axial distal end side. figure 2 It is an enlarged view of the vicinity of the end plate at the rear end of the rotor.

[0018] The rotor 1 includes a rotor shaft 3 rotating around an axis L, and a rotor core 2 disposed on the outer periphery of the rotor shaft 3 . Furthermore, a proximal end plate 4 is disposed on the proximal end side in the axial direction of the rotor core 2 , a distal end plate 5 is disposed on the axial distal end side of the rotor core 2 , and a distal end plate 5 is disposed on the axial distal end side of the distal end plate 5 . There is a circlip (ring-retainer) 6 for restricting the movement of the tip end...

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PUM

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Abstract

A rotor of an electric motor comprises: an engaging section formed in a slot shape at the outer circumference of a rotor shaft; and a circular ring member that is mounted onto the engaging section such that the ring member exhibits an elastic force that acts upon in a direction in which the rotor shaft will be tightened, and that limits the movement of a rotor core in one direction along the axis thereof. The rotor is characterized in that the outer diameter of the rotor shaft at the engaging section becomes larger as the distance from the rotor core becomes greater.

Description

technical field [0001] The invention relates to a structure for fixing a rotor core on a rotor shaft of an electric motor. Background technique [0002] The rotor of the electric motor includes a rotor shaft and a rotor core fixed to the outer peripheral portion of the rotor shaft. As a structure for restricting axial movement of a member supported on the outer peripheral portion of the cylindrical member having the above-mentioned structure, for example, a structure as described in JP62-237155A is known, in which a groove is provided on the outer peripheral portion of the cylindrical member, and A ring member called a circlip is attached to this groove. [0003] The problem to be solved by the invention [0004] However, the rotor core is generally composed of laminated magnetic steel plates, and there is a tendency that the variation in the axial dimension is large. In order to reliably restrict such axial movement of the rotor core, it is desirable that the circlip ab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/28H02K1/27
CPCH02K1/28H02K1/30
Inventor 田口直人森田司
Owner NISSAN MOTOR CO LTD