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In-wheel motor and electric vehicle

A technology of in-wheel motor and inner peripheral side, which is applied in the direction of electric vehicles, vehicle parts, motors, etc., and can solve problems such as coil support members and coil installation difficulties

Active Publication Date: 2013-11-27
NEW SHICOH MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if the inner yoke and the outer yoke are integrated on the inner peripheral side of the coil, there is a problem that it is difficult to install the coil support member and the coil.

Method used

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  • In-wheel motor and electric vehicle

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Embodiment Construction

[0024] Below, refer to figure 1 The embodiment of the present invention will be described in detail. The in-wheel motor 1 in this embodiment is provided in the rim 5 of each of the four wheels of an electric vehicle, and a tire 7 is mounted on the outer periphery of the rim 5, and each wheel 3 is driven electrically.

[0025] The in-wheel motor 1 has: a stator disk 11 fixed to the shaft 9; a coil 13 fixed to the stator disk 11; an outer yoke 15 arranged on the outer peripheral side of the coil 13; and an inner yoke 17 arranged inside the coil 13.

[0026] A hollow 19 for wiring is formed in the shaft 9, and a lead wire 21 for supplying power to the coil 13 passes through the hollow 19 of the shaft 9 through the inner space of the outer yoke 15 to be connected to the coil 13.

[0027] The stator disk 11 as a coil support member has a disk shape, a hole is formed in the center of the disk, and the shaft 9 penetrates the hole. The stator disk 11 is fixed on the shaft 9 by a wedge 12. ...

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PUM

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Abstract

The invention provides an in-wheel motor and an electric vehicle, wherein the in-wheel motor is equipped with an inner yoke so as to increase the density of the magnetic flux applied to a coil and is easy to assemble. The in-wheel motor 1 of the invention comprises a cylindrical coil 13; a coil supporting member 11 fixed to a shaft 9; an outer yoke 15 which is configured at the outer circumferential side of the coil 13 and is fixed outside a rim 5; a magnet 31 fixed on an inner circumferential surface of the outer yoke 15; and an inner yoke 17. The outer yoke 15 and the inner yoke 17 are freely rotated relative to the shaft 9 respectively, and are separated from each other.

Description

Technical field [0001] The present invention relates to an in-wheel motor that drives a wheel through a motor installed in the rim of the vehicle, and particularly to electric vehicles such as electric vehicles, hybrid vehicles, and electric bicycles. Background technique [0002] Patent Document 1 (Utility Model Publication No. Hei 5-22133) and Patent Document 2 (Patent Publication No. 2006-246678) disclose the following. That is, the cylindrical coil is fixed to the coil support member, the coil support member is fixed to the shaft, the cylindrical outer yoke with the magnet fixed to the inner circumference is provided on the outer circumference of the coil, and the outer yoke is fixed to the rim so as An in-wheel motor is constructed in which the rim is rotationally driven by supplying power to the coil. [0003] On the other hand, in order to increase the magnetic flux density of the magnet acting on the coil, it is conceivable to provide a cylindrical inner yoke on the inner ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K7/00H02K1/06
CPCY02T10/641Y02T10/64
Inventor 白木学窪田惠一
Owner NEW SHICOH MOTOR CO LTD