Vacuum Cleaner Handle with Offset Rotation to Reduce Wrist Strain
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Solution Overview
Problem
Existing vacuum cleaner handles require excessive force and cause wrist strain due to an elongated rotational path, leading to wrist bending when rotating the grip part, and there is a risk of the hand missing the grip while pushing or pulling.
Innovation Solution
A handle design where the central line of the extension tube connector passes through the grip part, allowing for a shorter rotational path and reduced force requirement, with a grip part connector that supports the hand and prevents it from missing the grip, featuring a 'U' shape and different radius grip bodies for secure handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the center of the front tube does not pass through the handle grip part, then the handle structure is simpler, but the rotational path is lengthened requiring larger force
Solution Approach 1:
The patent applies asymmetry by deliberately positioning the front tube center to not coincide with the handle grip part center, creating an offset rotational mechanism. This asymmetric arrangement, while seemingly increasing complexity, actually optimizes the rotational path to reduce the force required by the user, transforming a potential disadvantage into a mechanical advantage through careful geometric design
2Ease of operation
If the center of the front tube does not pass through the handle grip part, then the handle structure is simpler, but the wrist is largely bent applying burden to the user
Solution Approach 1:
The asymmetric positioning of the front tube relative to the handle grip part creates an optimized rotational path that reduces wrist bending. The offset center arrangement allows the user's wrist to remain in a more natural position during rotation, significantly improving ease of operation while the structural complexity remains manageable through the straightforward geometric offset design
3Ease of operation
If the wrist is bent during handle operation, then the handle can be maneuvered, but user fatigue increases and operation becomes difficult
Solution Approach 1:
The asymmetric handle design with offset centers minimizes wrist bending during both rotation and linear movement operations. By positioning the front tube center away from the handle grip part center, the patent creates a mechanical configuration that maintains a more neutral wrist position, reducing strain and fatigue while preserving full maneuverability of the suction part
Solution Approach 2:
The patent introduces a dimensional offset in the spatial arrangement of the handle components. By creating an offset in the positional dimension between the front tube center and handle grip part center, the design adds a new geometric relationship that reduces wrist bending across multiple operational dimensions, thereby reducing strain while maintaining operational effectiveness
Data Source
AI summary
A handle for a cleaner according to the present disclosure includes: an extension tube connector that is connected to an extension tube; an air flow pipe that communicates with the extension tube connector to transfer air and dusts that is received from the extension tube connector; a grip part that is to be held by a user; and a grip part connector that connects the extension tube connector and the grip part to each other and is rotated with respect to the air flow pipe, wherein the grip part is rotated together with the grip part connector and the extension tube connector, and the grip part is rotated with respect to the central line of the extension tube connector.