cleaner
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Solution Overview
Problem
Existing portable cleaners face challenges in improving user usability, particularly in easily attaching and detaching the filter device from the housing.
Innovation Solution
The cleaner incorporates a filter support mechanism that fixes the first filter unit to the main body housing at a fixed position during normal rotation, and a reverse rotation limiting mechanism that restricts excessive rotation in the reverse direction, enhancing attachment and detachment ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the filter device is rotated to attach to or detach from the housing, then the filter device can be easily installed or removed, but excessive rotation in the reverse direction may cause misalignment or damage
Solution Approach 1:
The reverse rotation limiting mechanism applies preliminary anti-action by preventing excessive reverse rotation before misalignment or damage can occur. The limiting mechanism (such as a stopper or mechanical constraint) activates when the filter device attempts to rotate beyond the intended range in the reverse direction, blocking further rotation and protecting the components from potential damage or misalignment.
Solution Approach 2:
The filter support mechanism performs preliminary action by pre-positioning the filter device at the correct attachment location and orientation before the user applies rotation force. The support mechanism includes guide structures or positioning features that ensure the filter device is correctly aligned with the housing prior to attachment, reducing the risk of misalignment during the rotation process.
2Adaptability or versatility
If the filter unit is freely rotatable, then attachment and detachment are flexible, but the positional relationship between the filter unit and housing becomes unstable
Solution Approach 1:
The system employs dynamics by allowing the filter device to rotate freely within a controlled range during attachment and detachment operations, then transitioning to a fixed stable position once attached. The filter support mechanism enables this dynamic behavior through features such as a rotation allowance during attachment followed by a locking or fixing mechanism that stabilizes the position after attachment is complete.
Solution Approach 2:
The attachment mechanism uses asymmetry by providing different rotational characteristics in different directions or stages. The filter device may be allowed to rotate in one direction (or within a specific angular range) during attachment, but the reverse rotation is limited or prevented. This asymmetric rotational control maintains flexibility during operation while ensuring stability in the attached state.
3Reliability
If a rotation stop mechanism is provided to prevent further rotation, then misalignment is prevented, but the mechanism increases device complexity
Solution Approach 1:
The rotation stop function is merged with the existing filter support mechanism rather than being implemented as a separate independent system. The filter support mechanism incorporates both the support function and the rotation limiting function into a unified structure, such as integrating the stopper feature into the mounting bracket or housing structure, thereby preventing misalignment without significantly increasing overall device complexity.
Solution Approach 2:
The rotation limiting mechanism operates on a self-service principle by using the filter device's own structural features (such as its shape, size, or built-in positioning elements) to engage with corresponding features in the housing, automatically limiting rotation without requiring external control systems or complex additional components. The geometry of the filter device itself serves as part of the rotation stop mechanism.
Data Source
AI summary
A cleaner includes: a main body housing; a dust collecting housing detachably attached to the main body housing and having an air-intake port; a suction assembly housed in the main body housing and configured to generate a suction force; a first filter unit housed in the dust collecting housing and including a first filter to which air sucked through the air-intake port is supplied and a first support member supporting the first filter; a filter support mechanism configured to fix the first filter unit to the main body housing at a fixed position in a rotation direction when the first filter unit is rotated in a normal rotation direction with respect to the main body housing; and a reverse rotation limiting mechanism configured to restrict the first filter unit from being rotated beyond a limit angle from the fixed position in a reverse rotation direction.