Shower Head Spray Gun Switching With Automatic Reset

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Solution Overview

Problem

Current shower heads with spray guns have complex structures and lack automatic reset functionality, failing to return to the shower head mode after use.

Innovation Solution

A shower head with an automatically resettable spray gun featuring a water passage switching mechanism, including a button, switching link rod, and elastic member, which allows automatic reset to the initial state upon pressure removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a spray gun is assembled with a shower head to enable both spray gun and shower head water sprays, then the functionality is improved, but the structure becomes complex and cannot reset automatically

Engineering Contradiction:
ImprovefunctionalityVSAvoidstructure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines the spray gun and shower head into a single integrated device with a unified water inlet and merged internal structure. The spray gun nozzle and shower head nozzles share common water supply passages, eliminating the need for separate water inlets and reducing overall structural complexity while maintaining dual functionality.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The water inlet serves dual purposes by functioning as both the spray gun water inlet and shower head water inlet. The single water inlet is connected to both the spray gun nozzle and shower head nozzles through shared water passages, allowing one component to perform multiple functions and simplify the overall device structure.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If a spray gun is assembled with a shower head to enable both spray gun and shower head water sprays, then the functionality is improved, but the automatic reset capability is lost

Engineering Contradiction:
ImprovefunctionalityVSAvoidautomatic reset capability
Core Design Contradiction:
Adaptability or versatilityVSExtent of automation

Solution Approach 1:

The device automatically resets itself after use without requiring manual intervention. When water flow stops, the elastic member automatically pushes the button back to its initial position, which in turn moves the link rod to restore the water passage connection between the water inlet and shower head, achieving automatic reset functionality.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The elastic member provides mechanical feedback that detects when water pressure is removed. This feedback mechanism triggers the automatic reset sequence by allowing the button to return to its initial position, which restores the water passage configuration to favor the shower head mode.

Inventive Principle:
Principle #23Feedback

3Ease of operation

If a button and link rod mechanism is used to switch water passages, then the switching function is achieved, but the structure becomes complex

Engineering Contradiction:
Improvewater passage switching functionVSAvoidstructure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The link rod is positioned within the button structure, with the button serving as an external trigger that transmits force internally to the link rod. This nested arrangement allows the switching mechanism to be compact and integrated, reducing overall structural complexity while maintaining the switching function.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The link rod acts as an intermediary mechanical element that translates the button's linear motion into the appropriate movement to control water passage switching. This intermediary mechanism enables efficient force transmission and precise control with minimal structural complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 shower head provides a simple structure with automatic reset functionality, enhancing user experience by seamlessly transitioning between spray gun and shower head modes.

Implementation Method 1

an elastic member connected between the switching link rod and the water passage switching cavity; in an initial water inflow state, the water passage switching cavity communicates the shower head water passage and the water inlet and the switching link rod blocks off the spray gun water passage, by pressing the button, the switching link rod is driven to move and thus blocking off the shower head water passage, and the water passage is switched to a state where the water passage switching cavity communicates with the spray gun water passage, at this time, the elastic member is in a compressed state, and the state is retained under the action of water pressure; when water inflow is finished, since the water pressure is removed, the water passage is automatically switched and reset to the initial state under the action of the elastic member

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12472514B2Shower head with automatically resettable spray gun
Publication Date: 2025.11.18 XIAMEN DELMEI SANITARY WARE
  • US12472514B2 patent drawing
  • US12472514B2 patent drawing
  • US12472514B2 patent drawing

AI summary

A shower head with automatically resettable spray gun includes a shower head body including a water passage switching mechanism, a shower head, and a spray gun head which respectively communicates with the water passage switching mechanism. The water passage switching mechanism includes a water passing member and a water passage switching unit. The water passing member includes a water inlet, a water passage switching cavity communicating with the water inlet, a shower head water passage and a spray gun water passage which respectively communicates with the water passage switching cavity. The water passage switching unit arranged in the water passage switching cavity includes a button arranged at the water passing member by hinge joint, a switching link rod arranged at a lower portion of the button, and an elastic member connected between the switching link rod and the water passage switching cavity.