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Flywheel

A flywheel and hub ring technology, applied in the field of flywheels, can solve problems such as inability to achieve high speed

Inactive Publication Date: 2016-03-09
JTEKT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that such an increase in speed cannot be achieved

Method used

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Embodiment

[0046] Example: The flywheel 51 of the fifth embodiment was used as a measurement object. The inner diameter of the hub ring main body 5 is 220 (mm), the outer diameter of the flange 56 is 260 (mm), and the thickness of the flange 56 in the axial direction z is 10 (mm). The inner diameter of the wheel ring 3 is set to 240 (mm), the outer diameter of the wheel ring 3 is set to 500 (mm), and the axial z dimension of the wheel ring 3 is set to 200 (mm).

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Abstract

A flywheel includes a wheel ring and a hub ring fitted into the wheel ring. A hub ring main body of the hub ring pressure-contacts an inner periphery of the wheel ring while the flywheel is rotating. The pressure contact of the hub ring with the inner periphery of the wheel ring allows compressive stress applied to the wheel ring in a radial direction to cancel a portion of tensile stress acting in the wheel ring in the radial direction. As a result, the stress in the wheel ring in the radial direction decreases.

Description

[0001] The specification, drawings and abstract of Japanese Patent Application No. 2014-176224 filed on Aug. 29, 2014 are incorporated herein by reference. technical field [0002] The present invention relates to a flywheel which is mounted on a flywheel battery device or the like and rotates to store inertial energy. Background technique [0003] Conventionally, there is known a flywheel storage battery device that converts electrical energy into rotational inertial energy of a flywheel and stores it. The material of the flywheel mounted in the flywheel battery device is required to have a high specific strength (a value obtained by dividing the material strength by the density) in order to be able to withstand the centrifugal force generated when the flywheel rotates at a high speed. Furthermore, in order to realize a high gravimetric energy density, it is desirable to remove a portion of the flywheel that contributes little to energy. [0004] Therefore, conventionally,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/30
CPCF16F15/305
Inventor 尾崎大辅高畑良一西崎胜利
Owner JTEKT CORP