Laundry Drum Rear-Mounted Direct Drive with Integrated Air Flow
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Solution Overview
Problem
Laundry treating apparatuses face inefficiencies due to slipping between belts and drums, restricted rotation speed and direction control, and space constraints when the driving part is positioned at the bottom, leading to suboptimal air flow and reduced drum capacity.
Innovation Solution
A laundry treating apparatus with a driving part directly connected to the drum at the rear, featuring an air flow portion integrated into the rear plate to efficiently supply air to the drum, reducing slipping and optimizing space utilization for increased drum capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the driving part is positioned at the bottom surface of the cabinet and uses a belt to transmit power to the drum, then the structure is simple and easy to manufacture, but slipping occurs between the belt and drum reducing efficiency and limiting rotation speed control
Solution Approach 1:
The patent extracts the belt transmission medium from the power transmission path, eliminating the slipping issue entirely. The driving part is repositioned at the rear of the cabinet and directly coupled to the drum's rotation shaft, removing the intermediate belt that caused efficiency losses while maintaining manufacturing simplicity through direct mechanical coupling.
Solution Approach 2:
The patent introduces a direct mechanical coupling mechanism as the intermediary between the driving part and drum, replacing the belt-mediated power transmission. This direct coupling eliminates slipping while allowing precise control of rotation speed and direction through the driving shaft's alignment with the drum's rotation shaft.
2Device complexity
If the driving part is positioned at the bottom surface of the cabinet, then the structure is compact, but the arrangement of components is constrained and space allocation is limited
Solution Approach 1:
The patent relocates the driving part from the bottom surface (vertical dimension constraint) to the rear of the cabinet (horizontal dimension utilization). This dimensional shift frees up the bottom space for other components while allowing the driving shaft to align directly with the drum's rotation shaft, enhancing both space utilization and component arrangement flexibility.
3Productivity
If the driving part is disposed at the rear of the drum with direct connection, then slipping is eliminated and rotation control is improved, but the driving part requires space at the rear of the cabinet reducing drum capacity
Solution Approach 1:
The patent nests the driving part within the cabinet's rear structural space, utilizing the existing cabinet framework to house the driving mechanism. The driving shaft extends forward to connect with the drum's rotation shaft, allowing the driving part to occupy minimal rear space while maintaining direct power transmission to maximize drum capacity.
Data Source
AI summary
Disclosed is a laundry treating apparatus. The laundry treating apparatus includes a cabinet having a rear plate at a rear surface thereof, a drum having a drum rear surface facing the rear plate, and a driving part positioned at the rear of the rear plate, the rear plate includes a driving part mounting portion to be coupled with the driving part, and an air flow portion surrounding the driving part mounting portion and providing air to the drum, the drum rear surface includes a rear surface central portion facing the driving part mounting portion, and an air passage surrounding the rear surface central portion and passing air provided from the air flow portion therethrough to be supplied into the drum, the air flow portion includes a flow space allowing air to flow therein and having an open front surface, and the air passage protrudes rearward from the drum rear surface and shields the open front surface of the air flow portion.