Hand-Held Blower Vacuum Tube Latching for Easier Mode Switching
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Solution Overview
Problem
Existing hand-held blower devices with vacuum capabilities face challenges in securely attaching and switching between blower and vacuum modes, often requiring users to manually adjust and lock components, which can be cumbersome and inefficient.
Innovation Solution
A hand-held blower device with a pivotable door and locking mechanism that selectively retains the door in closed and open positions for blower and vacuum modes, respectively, and a vacuum tube assembly that engages with the housing through a coupler and catch system for secure attachment in vacuum mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a vacuum tube assembly is attached to the housing, then vacuum capability is enabled, but the device complexity increases due to multiple attachment methods and components
Solution Approach 1:
The door assembly serves multiple functions: it acts as a cover for the intake opening, provides a mounting surface for the vacuum tube assembly, and includes latching members for securing the tube. This multi-functional design enables vacuum capability while minimizing the number of separate components needed.
Solution Approach 2:
The patent combines the door, latching members, and vacuum tube assembly mounting features into an integrated system. The latching members are positioned on both the door and housing to work together as a unified attachment mechanism, reducing the need for separate fastening components.
2Reliability
If manual adjustment and locking components are used for switching modes, then secure attachment is achieved, but ease of operation decreases due to cumbersome adjustments
Solution Approach 1:
The biasing member automatically urges the door toward the closed position, providing self-latching functionality. When the vacuum tube assembly is removed, the biasing member naturally returns the door to its closed position without requiring manual intervention, making operation simpler while maintaining secure attachment when needed.
Solution Approach 2:
The door is designed to be pivotable between closed and open positions, allowing dynamic switching between blower and vacuum modes. The latching members provide selective retention in either position, enabling the system to adapt its state based on operational requirements without fixed constraints.
3Adaptability or versatility
If the door is retained in open position for vacuum mode, then vacuum operation is enabled, but the device complexity increases due to retention mechanisms
Solution Approach 1:
The latching members act as intermediary elements between the door and housing, providing a simple mechanical connection for retaining the door in either open or closed position. These latching members work in conjunction with the biasing member to achieve mode retention without requiring complex mechanical systems.
Data Source
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AI summary
Hand-held blower devices with vacuum function are provided. In this regard, a representative device includes: a housing defining an interior, an intake and an exhaust; an impeller mounted within the interior and being operative to rotate such that air is drawn into the interior through the intake and expelled from the interior through the exhaust; a locking mechanism mounted to the housing, the locking mechanism being movable between an unlocked position and a locked position; and a vacuum tube assembly having an inlet end and an outlet end and defining an air passageway between the inlet end and the outlet end, the outlet end being operative to engage the intake of the housing for the vacuum mode of operation; the locking mechanism being operative to interface with the vacuum tube assembly to retain the outlet end of the vacuum tube assembly in engagement with the intake.