Handheld Shower Key Switching Mechanism for Single-Hand Operation
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Solution Overview
Problem
Traditional handheld shower units require two-handed operation and have slow switching speeds due to cumbersome mechanisms, making single-hand operation and efficient switching difficult.
Innovation Solution
A handheld shower unit with a key-activated switching mechanism, utilizing a valve body, transmission swing rod, sliding rod, reset spring, driving disc, ratchet wheel, pawl, and water distribution pan to allow single-hand operation and high-speed switching between water outlet channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional surface cover rotation mechanism is used to switch water outlet state, then the water outlet channels can be switched, but the operation requires both hands and the switching speed is low
Solution Approach 1:
The switching mechanism is divided into separate functional components: a key for initiation, a transmission swing rod for force transmission, a ratchet wheel for directional control, and a water distribution pan for water outlet switching. This segmentation allows the complex switching action to be broken down into simple, sequential movements that can be easily operated with one hand while maintaining high switching speed.
Solution Approach 2:
The transmission swing rod acts as an intermediary component that converts the small rotational movement of the key into the larger rotational movement of the water distribution pan. This intermediary mechanism amplifies the user's input force and controls the switching action, enabling easy single-hand operation while achieving rapid water outlet switching.
2Ease of operation
If a shifting wheel structure is used for switching water outlet state, then single-hand operation is achieved, but the force intensity and gear control are difficult to manage
Solution Approach 1:
The transmission swing rod is designed to dynamically adjust its position and movement characteristics during operation. It can swing between different positions to engage or disengage the ratchet wheel mechanism, providing natural mechanical feedback and control. This dynamic design ensures reliable force control and gear engagement while maintaining ease of single-hand operation.
Solution Approach 2:
The ratchet wheel and pawl mechanism provides mechanical feedback during the switching process. As the transmission swing rod rotates the water distribution pan, the ratchet teeth engage with the pawl to prevent reverse movement, giving the user tactile feedback on the switching progress and ensuring precise control over the water outlet state changes.
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
Enables convenient single-hand operation with high switching speed and reliability by rotating the water distribution pan to align different water inlets with outlet channels, improving user experience and operational efficiency.
Implementation Method 1
a reset spring (45) is mounted between the valve body and the sliding rod
Implementation Method 2
a first compression spring is mounted in the concave hole, one end of the first compression spring abuts against the water distribution pan, the other end of the first compression spring abuts against the driving shaft, and the first compression spring drives the water distribution pan to draw close to the water outlet assembly
Data Source
AI summary
A handheld shower unit with the water outlet state switched through a key, comprises a water outlet assembly mounted at one end of a housing and provided with water outlet channels, a water inlet pipe communicates with the water outlet channels through a switching valve which comprises a valve body, the key, a transmission swing rod, a sliding rod, a reset spring, a driving disc, a driving shaft, a ratchet wheel, a pawl, and a water distribution pan which is provided with water distribution holes corresponding to different water inlets; the key is pressed which rotates the transmission swing rod, which pushes the sliding rod, which rotates the driving disc so that the pawl hinged to the driving disc can drive the ratchet wheel to rotate, which then drives the driving shaft and the water distribution pan to rotate. Single-hand operation, high switching speed and high reliability can be achieved.