Showerhead 360° Rotating Control Surface Cam Plunger Mechanism
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Solution Overview
Problem
Existing showerheads with side handles for adjusting spray patterns are ergonomically and functionally inadequate, particularly for users with their eyes closed, and often have limited 360° rotation, leading to customer dissatisfaction in non-domestic installations and lack of integration with movable plungers in the faceplate.
Innovation Solution
A showerhead design featuring a control surface near the faceplate that can be continuously rotated 360°, translating into axial movement of plungers through cam surfaces and followers, allowing for adjustable spray patterns without the need for a lateral handle, and optionally includes a pulsating or vibrating spray head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a side handle is used to adjust spray patterns, then the showerhead can provide adjustable spray patterns, but the handle is difficult to locate and operate when the user's eyes are closed
Solution Approach 1:
The control surface is moved from the lateral side of the showerhead to the front faceplate area, changing the spatial dimension of control access. This allows users to locate and operate the control by tracing water flow patterns visually or by touch, eliminating the need to reach around the showerhead face.
2Ease of operation
If a control surface near the front of the showerhead is used, then ergonomic advantages are achieved, but the control surface cannot rotate fully 360° due to stops
Solution Approach 1:
The rotational stops that limited the control surface rotation are removed from the mechanism. This extraction of the limiting feature allows the control surface to rotate freely through 360° in both directions, providing full adaptability while maintaining the ergonomic front-facing control position.
3Shape
If a control surface near the front of the showerhead is used, then aesthetic advantages are achieved by incorporating the control into the shell, but the mechanism complexity increases to achieve 360° rotation without stops
Solution Approach 1:
The control surface is merged with the front faceplate area of the showerhead shell, creating a unified aesthetic appearance. The control surface becomes an integrated part of the visible face rather than a separate lateral component, achieving both aesthetic integration and functional accessibility.
4Ease of operation
If the control surface is located on the wide face of the showerhead, then users can easily locate it with eyes closed, but users with wide showerheads have difficulty reaching the side handle
Solution Approach 1:
The control access point is moved from the lateral dimension (side handle) to the front dimension (faceplate area). This dimensional change allows users to access the control by moving forward toward the showerhead face rather than reaching around the wide face, significantly reducing the reach distance required.
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
Enhances ergonomic operation by allowing users to adjust spray patterns without visual cues and provides full 360° rotation, ensuring consistent functionality and aesthetic integration, improving user experience and reducing post-shower dripping.
Implementation Method 1
through suitable interaction between cam surfaces in the interior stem of the showerhead and cam followers on a plunger holder, facilitates axial movement of plungers
Data Source
AI summary
A showerhead is disclosed with a control surface about the lower periphery of the showerhead that can be continuously rotated through 360 degrees to control the water spray patterns exiting the showerhead. The control surface is mechanically linked by a cam track and mating cam followers to a set of plungers in the showerhead faceplate. The plungers can be axially moved within openings in the faceplate of the showerhead by rotation of the control surface. That axial movement of the plungers allows a user's adjustment of the spray patterns exiting the showerhead.