Rotatable Water Sprayer Coupler to Prevent Hose Twisting
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Solution Overview
Problem
Existing couplers for water sprayers and hoses often cause discomfort and inconvenience due to hose twisting during transverse movement, as they do not allow independent rotation of the sleeve, leading to user wrist strain and difficulty in rotary watering movements.
Innovation Solution
A coupler comprising a sleeve and a coupling member with engagement devices that lock and unlock to enable the sleeve to rotate independently, allowing the hose to prevent twisting by separating from the coupling member during axial movement, thereby allowing the sleeve to freely rotate around the handle's central axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sleeve and coupling member are locked together, then the connection is stable and secure, but the sleeve cannot rotate independently causing hose twisting
Solution Approach 1:
The coupling mechanism transitions from a static locked state to a dynamic unlocked state. The sleeve and coupling member are designed with engagement devices that can switch between locked (for stability) and unlocked (for rotation) states. This dynamic capability allows the system to adapt its degree of freedom based on operational needs, resolving the contradiction between connection stability and rotational freedom.
2Reliability
If the sleeve is locked to prevent detachment, then connection reliability is improved, but hose twisting occurs during transverse movement
Solution Approach 1:
The coupling system is segmented into two functional modes: a locked mode where the sleeve and coupling member are engaged for reliable connection, and an unlocked mode where they can rotate independently. The engagement devices allow selective activation of these modes, enabling the system to prevent hose twisting during transverse movement while maintaining connection reliability when needed.
3Ease of manufacture
If the coupling mechanism is simplified, then ease of manufacture is improved, but the ability to lock and unlock is compromised
Solution Approach 1:
The engagement devices are designed to automatically engage and disengage based on relative movement between the sleeve and coupling member. The axial pulling force automatically triggers the unlocking mechanism, and rotational movement automatically triggers the locking mechanism. This self-service capability eliminates the need for complex control systems while maintaining full locking and unlocking functionality.
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 reduces hose twisting and enhances user convenience by allowing the sleeve to rotate independently, reducing wrist discomfort and improving the ease of use during transverse and rotary watering movements.
Implementation Method 1
The coupling member has a first screw portion which is adapted to be matchingly rotatingly assembled to the connector of the inlet end of the handle. Besides, the sleeve has a second screw portion which is adapted to be matchingly rotatingly assembled to the hose joint.
Data Source
AI summary
A coupler, adapted for being assembled and connected with a water sprayer, includes a sleeve and a coupling member adapted for being assembled and connected with the water sprayer. The coupling member and the sleeve are sleeved with each other and respectively have a first corresponding end and a second corresponding end which correspond to each other. The first corresponding end and the second corresponding end are adapted to be engaged with each other, so that the sleeve and the coupling member are capable of being mutually locked and into a non-rotatable state through the engagement and rotation meshing operation. The sleeve can be disengaged with the coupling member through axially moving the sleeve so that the sleeve is allowed to be axially rotatable.