Showerhead Cam Shutter for Even Massage Force Distribution
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Solution Overview
Problem
Conventional showerheads in massage mode distribute water force unevenly and limit the impact area due to circular shutter rotation and clustered nozzle arrangements, resulting in reduced force and limited impact surface for users.
Innovation Solution
A showerhead design featuring a turbine-driven cam and shutter assembly that rotates in a linear reciprocating motion, allowing for simultaneous opening and closing of nozzle pairs on either side of the central axis, increasing water force and impact area by distributing the pulsating spray more evenly across the user's body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a circular rotating shutter is used to create massage mode, then the showerhead can provide pulsating water flow, but the water force is reduced and impact area is limited due to sequential nozzle opening and clustered nozzle arrangement
Solution Approach 1:
The nozzles are segmented into multiple groups (first group, second group, third group, fourth group) arranged in different regions of the showerhead face, allowing independent control of each group. The shutter is also segmented with corresponding openings that can selectively cover or uncover specific nozzle groups, enabling simultaneous opening of multiple non-adjacent nozzle groups to increase impact area and water force.
Solution Approach 2:
The invention transitions from a single-dimensional circular rotation path to a two-dimensional reciprocating linear motion. The shutter moves back and forth along a linear path that allows it to simultaneously cover/uncover nozzle groups arranged in different spatial regions, creating a more expansive impact area compared to the circular rotation which sequentially activates nozzles in a single plane.
2Area of stationary object
If nozzles are arranged in a center of the showerhead and clustered tightly together, then the shutter rotation mechanism is simplified, but the impact area on the user's body is limited
Solution Approach 1:
The nozzles are divided into multiple groups positioned at different locations on the showerhead face rather than clustered in the center. Each nozzle group can be independently controlled by corresponding openings in the shutter, allowing water to be distributed across a larger impact area on the user's body.
Solution Approach 2:
The nozzle groups are arranged in a two-dimensional pattern across the showerhead face rather than being confined to a central cluster. The shutter's linear reciprocating motion allows it to simultaneously manage multiple nozzle groups across this expanded spatial arrangement, increasing the impact area without significantly complicating the control mechanism.
3Force
If a linear reciprocating shutter motion is used instead of circular rotation, then water force and impact area are increased, but the mechanism complexity increases with cam and turbine assembly
Solution Approach 1:
The turbine is driven directly by the water flow itself, eliminating the need for an external motor or power source. The water pressure and flow rate automatically control the turbine's rotational speed, which in turn controls the cam's reciprocating motion and the shutter's movement, creating a self-regulating system that adapts to varying water conditions.
Solution Approach 2:
The invention uses hydraulic principles by employing water flow to directly drive the turbine-cam-shutter mechanism. The kinetic energy of the water stream is converted into mechanical motion through the turbine blades, which then translates into the reciprocating linear motion of the cam and shutter, eliminating the need for electrical motors or complex mechanical drive systems.
4Area of stationary object
If shutter length is made longer than drive element length to control more nozzles, then more nozzle groups can be simultaneously activated, but the shutter becomes harder to move and increases friction
Solution Approach 1:
The cam mechanism converts the turbine's continuous rotation into reciprocating linear motion of the shutter, dynamically adjusting the shutter's position to simultaneously control multiple nozzle groups. The cam's profile is designed to optimize the shutter's acceleration and deceleration, ensuring smooth motion despite the increased length and mass of the shutter.
Solution Approach 2:
The cam acts as an intermediary between the rotating turbine and the linearly moving shutter. It translates the rotational motion into reciprocating linear motion, providing mechanical advantage that reduces the force required to move the long shutter while maintaining control over multiple nozzle groups. The cam profile optimizes the motion characteristics to balance shutter length with movement speed.
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 design enhances the massage experience by providing a more powerful and expansive impact area with evenly distributed water flow, ensuring that different sections of the body receive the pulsating spray simultaneously, addressing the limitations of traditional showerheads.
Implementation Method 1
The showerhead includes an engine including a turbine, a cam extend from the turbine
Implementation Method 2
the cam rotates, moving the shutter correspondingly between a first position and a second position
Data Source
AI summary
In one embodiment, a massage mode assembly for a showerhead is disclosed. The massage mode assembly includes a drive element, a cam, and a shutter. The drive element has a drive element length or diameter, depending on the shape of the drive element, and is rotatable about an axis by fluid flowing through the showerhead. The cam is connected to the drive element and rotates with the drive element. The shutter is operably engaged with the cam and has a shutter length that is longer than the drive element length and the rotation of the cam causes the shutter to move correspondingly.