Clothing treatment apparatus
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Solution Overview
Problem
Existing laundry treating apparatuses face difficulties in assembling the output shaft of the power transmitter and drum, leading to durability issues and displacement problems during coupling, which complicates the assembly process and reduces the durability of components.
Innovation Solution
The apparatus includes a drum with a displacement limiter and a gear unit to transmit rotating motion, a motor with a stator and rotor, and a support panel with a drum connecting body and seal to facilitate assembly and minimize displacement, ensuring coaxiality and reducing vibration and durability risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the output shaft of the power transmitter is directly coupled with the drum, then the rotating motion can be transmitted efficiently, but the assembly process becomes difficult and durability is reduced due to misalignment and displacement
Solution Approach 1:
The patent introduces a coupling mechanism as an intermediary component between the output shaft and the drum. This coupling includes a coupling body with a coupling hole that receives the output shaft, and a coupling plate that connects to the drum. The intermediary coupling mechanism facilitates easier assembly while maintaining reliable motion transmission and preventing direct misalignment damage.
Solution Approach 2:
The coupling mechanism is divided into multiple segments: the coupling body, coupling hole, coupling plate, and limiting protrusions. This segmentation allows each component to perform its specific function independently - the coupling body provides structural support, the coupling hole guides alignment, the coupling plate connects to the drum, and the limiting protrusions prevent excessive displacement. This modular approach simplifies assembly while ensuring durability.
2Reliability
If the drum is allowed to move freely during operation, then the displacement limiter prevents excessive movement, but without the limiter the drum could achieve greater operational flexibility
Solution Approach 1:
The displacement limiter applies preliminary anti-action by providing limiting protrusions that preemptively prevent the drum from moving beyond acceptable displacement thresholds. The limiting protrusions are positioned in advance to contact the coupling body if excessive movement occurs, thereby preventing damage before it can happen while still allowing normal operational flexibility within the limited range.
3Reliability
If the output shaft and drum are assembled with precise alignment, then durability is improved, but the assembly process becomes more time-consuming and complex
Solution Approach 1:
The coupling mechanism performs preliminary action by providing built-in alignment features during the design stage. The coupling hole and limiting protrusions are pre-positioned to guide the output shaft into correct alignment with the drum during assembly. This preliminary design of alignment features eliminates the need for time-consuming manual alignment adjustments while ensuring precise positioning and durability.
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 simplifies the assembly of the output shaft and drum, enhances durability by minimizing displacement and vibration, and prevents deterioration of the power transmitter and drum during coupling.
Implementation Method 1
a motor including a stator fixed to the fixed panel or the housing to generate a rotating magnetic field, and a rotor where the one end of the input shaft is fixed and rotated by the rotating magnetic field
Data Source
AI summary
The present application relates to a clothing treatment apparatus comprising: a drum which is provided with a drum body providing a space for storing clothing, a front cover forming the front surface of the drum body, a rear cover forming the rear surface of the drum body, and a rear cover through-hole passing through the rear cover; a fixing panel provided at a position spaced apart from the rear cover; a power transmission unit which is provided with a housing fixed to the fixing panel, an input shaft of which one end is positioned outside the housing and the other end is positioned inside the housing, an output shaft of which one end passes through the fixing panel and is fixed to the rear cover and the other end is positioned inside the housing, and a gear unit positioned inside the housing and transmitting the rotational motion of the input shaft to the output shaft; a motor which is provided with a stator fixed to the fixing panel or the housing and forming a rotating field and a rotor fixed to the one end of the input shaft and rotated by the rotating field; a support panel provided at a position spaced apart from the front cover; an input hole passing through the support panel; a drum connection body which protrudes from the support panel toward the front cover and is inserted into the drum input hole, and which surrounds the input hole; and a displacement-limiting part which is provided in the drum connection body and limits the displacement of the drum input hole with respect to the radial direction of the input hole.