Driving device and clothing treatment device including the same
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Solution Overview
Problem
The existing driving devices in clothing treatment machines, such as washers, face challenges in reducing thickness to maintain a safe distance from the back cover, which is essential to prevent noise and damage due to vibration, while operating within the limited internal space of these devices.
Innovation Solution
The proposed driving device includes a stator, a rotor with a rotor frame and coupling protrusions, and a clutch with a movable member that slides along the rotational axis for selective coupling, featuring a damper for cushioning and a connection member for engagement, allowing for efficient operation during different cycles like washing and spin-drying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the driving device is positioned closer to the back cover to reduce thickness, then space efficiency is improved, but vibration-induced noise and damage risk increase
Solution Approach 1:
The patent applies beforehand cushioning by introducing a damper between the driving device and the back cover. This damper is installed in advance to absorb and attenuate vibrations before they can cause noise or damage to the back cover, allowing the driving device to be positioned closer to the back cover while still protecting against vibration-related harmful effects.
2Length of stationary object
If the driving device thickness is reduced to increase spacing from the back cover, then space utilization is improved, but structural complexity increases
Solution Approach 1:
The patent merges the damper function into the existing driving device structure rather than adding a completely separate vibration isolation system. The damper is integrated within the driving device assembly, combining vibration attenuation functionality with the motor housing structure, thereby reducing overall structural complexity while still achieving the required vibration protection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for a thinner driving device design, enhancing space efficiency and reducing the risk of vibration-induced damage, while maintaining effective operation across various cycles, thus addressing the need for reduced thickness and noise prevention.
Implementation Method 1
a rotor (220) including a rotor frame (225) and provided to be rotatable about a rotational axis (R) of a clothing treatment device through interaction with the stator (210)
Implementation Method 2
The rotor frame (225) may include a plurality of holes, and a plurality of coupling protrusions protruding toward the clutch so as to be coupled with the movable member
Data Source
AI summary
A driving device including a stator; a rotor including a rotor frame and provided to be rotatable about a rotational axis of a clothing treatment device through interaction with the stator; and a clutch including a movable member configured to slide along the rotational axis to be selectively coupled to the rotor according to an operation mode of the clothing treatment device. The rotor frame may include a plurality of holes, and a plurality of coupling protrusions protruding toward the clutch so as to be coupled with the movable member when the movable member is slid to be coupled to the rotor. The plurality of coupling protrusions are integrally formed with the rotor frame and punched out of the rotor frame to form the plurality of holes.