Extension tube for vacuum cleaner and vacuum cleaner unit
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Solution Overview
Problem
Existing vacuum cleaners face issues with static electricity generation due to current conducting portions that are easily gripped by users and require additional measures, and the charging stand design is enlarged to align connection terminals, leading to increased size.
Innovation Solution
An extension pipe for vacuum cleaners with a power-receiving portion that includes first and second current conducting portions and power-receiving lines, allowing power feeding from a different position, and a charging stand with a support column that reduces the size by aligning the third current conducting portion with the second current conducting portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the current conducting portion is provided to the vacuum cleaner main body for charging, then power feeding can be achieved, but static electricity may be generated due to user contact
Solution Approach 1:
The current conducting portion for charging is extracted from the vacuum cleaner main body and relocated to the extension pipe. Specifically, the first current conducting portion is provided in the extension pipe away from the main body, separating the charging function from the user-gripped main body, thereby eliminating static electricity generation while maintaining power feeding capability
Solution Approach 2:
The extension pipe serves as an intermediary component that carries the current conducting portion between the vacuum cleaner main body and the charging stand. The extension pipe includes the first current conducting portion that connects to the main body and the second current conducting portion that connects to the charging stand, enabling power transmission without requiring the main body itself to have the current conducting portion
2Reliability
If the support device is designed to align the feeding terminal with the connection terminal on the main body, then charging can be achieved, but the support device size is increased
Solution Approach 1:
The connection interface is relocated from the vertical height dimension of the main body to the extension pipe dimension. The second current conducting portion is provided in the extension pipe at a position that allows the charging stand to have a smaller footprint, as the connection can be made at a different spatial location rather than requiring precise vertical alignment with the main body
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
The solution effectively reduces static electricity risks and downsizes the charging stand by allowing power feeding from a different position, improving designability and user safety.
Implementation Method 1
a power-receiving line configured to electrically connect the first current conducting portion and the second current conducting portion
Data Source
AI summary
An extension pipe (30) is configured to allow a suction tool (70) to be connected to one end side in a pipe axis direction and a vacuum cleaner main body (10) to be connected to another end. The extension pipe (30) includes a power-receiving portion (36) configured to receive and supply electric power to be fed to a battery (17a) provided to the vacuum cleaner main body (10).