Rotating force transmission device, rotating device for electrical appliance, wind wheel device and extractor hood

Abstract

The invention provides a rotating force transmission device, a rotating device for an electrical appliance, a wind wheel device and an extractor hood, and relates to the technical field of household appliances. The problem that in the prior art, a damping piece in a rotating force transmission device used in an extractor hood is prone to bearing shear force and consequently fatigue fracture occursis solved. A first transmission structure is arranged on a first rotating shaft of the rotating force transmission device, a second transmission structure is arranged on a second rotating shaft of the rotating force transmission device, and a damping piece is located between the first transmission structure and the second transmission structure; and in the rotating process of the first rotating shaft, the second transmission structure can be driven through the damping piece in the mode that the first transmission structure applies pressure stress to the damping piece, and the second rotatingshaft is driven to rotate through the second transmission structure. The damping piece does not bear shear force, fatigue fracture of the damping piece is effectively reduced, and the safety and reliability of the extractor hood are improved.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to a rotating force transmission device, a rotating device for electrical appliances, a wind wheel device and a range hood. Background technique [0002] In the prior art, the fan wheel of the range hood is a metal fan wheel, and its structure is divided into a rotating shaft, an upper hub, a lower hub, and fan blades. The rotating shaft can be fixed on the lower hub by means of rivets or screws, and the fan blades are fixed between the upper hub and the lower hub by riveting. The motor is inserted into the rotating shaft to drive the wind wheel to rotate. The contact between the above-mentioned rotating shaft and the lower hub, the motor and the rotating shaft is rigid contact. When the motor has vibration and noise, it will be transmitted to the rotor shaft through the motor shaft, and then transmitted to the overall wind rotor through the rotor shaft. W...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a rotating force transmission device, a rotating device for electrical appliances, a wind wheel device and a range hood, so as to solve the problem that the damping parts in the rotation force transmission device used in the range hood in the prior art are prone to shearing. Technical Problems of Fracture Due to Shear Force and Fatigue

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