Back-Mounted Blower Battery Layout for Access and Weight Balance
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Solution Overview
Problem
Existing electric blower apparatuses face challenges with weight distribution and accessibility of battery packs, which are heavy and require easy replacement, while also avoiding contamination and vibration issues.
Innovation Solution
The electric blower apparatus is designed with a back plate having upper and lower sections, where the battery packs are housed in a receiving space between the upper plate section and the blower spiral, with an upward-facing insertion opening for the battery pack and an inclined housing shaft to enhance accessibility and reduce contamination risk, and incorporates antivibration elements for stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery pack is arranged in the lower plate section to improve weight distribution, then the center of gravity is lowered, but accessibility for battery replacement is reduced
Solution Approach 1:
The back plate is divided into an upper plate section and a lower plate section, with the battery pack specifically positioned in the upper plate section. This segmentation allows optimal placement for both weight distribution and accessibility, resolving the contradiction between these two requirements.
2Ease of operation
If the battery pack is arranged in the dirt accumulation area to improve accessibility, then ease of replacement is enhanced, but contamination exposure increases
Solution Approach 1:
The upper plate section is designed as a distinct location that is free from dirt accumulation areas. By placing the battery pack in this specific local area with different contamination characteristics, the patent achieves both good accessibility and minimal contamination exposure.
3Duration of action of moving object
If multiple battery packs are provided to achieve adequate service time, then operational duration is improved, but the load weight is increased
Solution Approach 1:
The patent provides instructions for replacing battery packs, implying a system where battery packs can be pre-charged and stored. This allows users to prepare replacement battery packs in advance, ensuring adequate service time without needing to carry multiple charged battery packs simultaneously, thus reducing the immediate load weight.
Data Source
AI summary
The disclosure relates to an electric blower apparatus having a back plate, for carrying on the back of a user. The back plate has a plate axis, oriented in the vertical direction, an upper plate section and a lower plate section. The blower spiral of the blower apparatus comprises an axial end face, to which an electric motor is fixed having a drive shaft which is connected to a fan wheel. For the supply of energy, a battery pack is provided, which is arranged in a receiving space between the first, upper plate section of the back plate and the blower spiral. The housing shaft comprises an insertion opening which faces away from the electric motor.