Push-Button Shower Head Guide Surface Reduces Friction
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Solution Overview
Problem
Conventional single-button switching shower heads face issues with short service life and unstable switching due to friction and misalignment between the push block and ratchet wheel, leading to frequent operational failures.
Innovation Solution
A push-button switching shower head structure featuring a guide surface on the water inlet seat to guide the push block, preventing radial force application on the ratchet wheel and reducing friction, along with unidirectional guide rails to ensure one-directional rotation of the water distribution disc, enhancing stability and longevity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a second spring is provided between the push block and push rod to ensure meshing, then the push block can always hold the ratchet wheel, but the push block and ratchet wheel rub against each other causing easy wear and short service life
Solution Approach 1:
The harmful second spring that causes continuous contact and friction between the push block and ratchet wheel is removed from the system. The patent replaces this spring-based holding mechanism with a guide groove structure that provides necessary guidance without maintaining constant pressure contact, thereby eliminating the friction-induced wear while preserving the switching function.
Solution Approach 2:
A guide groove is introduced as an intermediary structure between the push block and ratchet wheel. This guide groove provides the necessary guidance and alignment for the push block to engage with the ratchet wheel teeth, replacing the direct pressure-based holding mechanism and reducing frictional contact during operation.
2Reliability
If the push block is movably fitted on the push rod with a second spring, then the push block can mesh with the ratchet wheel after return, but the two applied forces on the ratchet wheel may result in radial force causing the push block to fail to push the ratchet wheel and the switching becomes unstable
Solution Approach 1:
The second spring that generates the harmful radial force component is removed from the system. The patent replaces this spring-based mechanism with a guide groove structure that provides guidance without applying radial forces to the ratchet wheel, thereby eliminating the force interference that caused unstable switching.
Solution Approach 2:
The guide groove acts as an intermediary structure that guides the push block's movement path, ensuring that the force applied to the ratchet wheel is purely tangential for rotation. This intermediary structure eliminates the radial force component that previously caused switching instability.
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 provides a stable and reliable switching function with extended service life by guiding the push block along the guide surface and preventing reverse rotation of the ratchet wheel, thus minimizing wear and tear and ensuring consistent operation.
Implementation Method 1
a return spring (6), wherein the return spring (6) is arranged between the push rod (4) and the water inlet seat (2), and the return spring (6) is used to push the push rod (4) and the push block (5) to return to the original position after the button (3) is released
Data Source
AI summary
A push-button switching shower head structure includes a shower head body, a water inlet seat, a button, a push rod, a push block, a return spring, a ratchet wheel, a water distribution disc, and an outlet disc. The button pushes the push rod to move, and the push rod drives the push block to move and drive the ratchet wheel to rotate, and then the ratchet wheel drives the water distribution disc to rotate synchronously to cooperate with the outlet disc to perform waterway switching. The shower head has the advantages of long service life and stable and reliable switching function by providing a guiding groove on the water inlet seat.