Pull-Out Hose Locking Switch With Slider-Pin Positioning
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Solution Overview
Problem
Existing pull-out faucet mechanisms with dual rolling wheels are complex and costly, and require continuous pulling force to prevent hose retraction, making them inconvenient for use.
Innovation Solution
A simple operation switch and pull-out device featuring a housing, slider, sliding pin, and positioning pin with resilient members, allowing for easy mounting and operation, and a pull-out control mechanism with rotating wheels and locking members to suspend and position hoses/cords without external force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dual rolling wheels are used for temporal positioning, then the positioning function is achieved, but the structure becomes complex and costly
Solution Approach 1:
The positioning function is segmented into two independent components: a slider for vertical movement and a positioning pin for lateral engagement. The positioning pin can independently engage with positioning holes at different heights, achieving temporal positioning without requiring complex dual rolling wheel mechanisms. This segmentation simplifies the overall structure while maintaining the positioning function.
Solution Approach 2:
The positioning pin is nested within the slider assembly, allowing it to move laterally independent of the slider's vertical motion. This nested configuration enables the positioning function to be integrated into the existing slider structure rather than requiring separate dual rolling wheel mechanisms, thereby reducing structural complexity.
2Reliability
If dual rolling wheels with limiting mechanism are used, then temporal positioning is achieved, but the operation becomes cumbersome requiring continuous pulling force
Solution Approach 1:
The positioning pin automatically engages with the positioning holes through elastic deformation when the slider reaches the desired height. The elastic component provides self-service by automatically locking the slider in position without requiring continuous user intervention or pulling force. The system serves itself by using the motion of the slider to trigger the positioning action.
Solution Approach 2:
The elastic component is pre-loaded to create a preliminary counter-force that automatically engages the positioning pin with the positioning holes. This preliminary anti-action prevents the slider from passing through the positioning holes, achieving temporal positioning automatically when the slider reaches the correct position, eliminating the need for continuous pulling force to maintain position.
3Productivity
If weighting block is used for hose retraction, then automatic retraction is achieved, but the hose cannot be suspended without continuous pulling force
Solution Approach 1:
Different parts of the hose system have different functional qualities: the lower portion has a weighting block for automatic retraction, while the upper portion has multiple positioning holes at different heights that enable suspension. The positioning pin engages with these localized features to provide suspension capability at specific positions, while the weighting block continues to provide automatic retraction when not engaged.
Solution Approach 2:
The system dynamically switches between two states: when the positioning pin engages with a positioning hole, the hose is suspended and held stationary; when the positioning pin disengages, the weighting block causes automatic retraction. This dynamic switching between suspension and retraction states allows the system to provide both functions as needed without requiring continuous pulling force.
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 cost-effective, easy-to-use mechanism for suspending and positioning hoses/cords, eliminating the need for continuous pulling force and simplifying the structure, enhancing usability and practicality.
Implementation Method 1
A first resilient member is provided between the slider and the positioning pin, for biasing the positioning pin toward the end cap
Implementation Method 2
The guide ramp has an upwardly inclined slope, and one end of the positioning pin is driven or redirected by the guide ramp outwardly from the housing opening along the inclined slope
Data Source
AI summary
The present disclosure discloses an operation switch, including a housing, an end cap, a slider, a sliding pin and a positioning pin. The housing has a housing opening on one side of the housing away from the end cap. The slider has a slider stop plate extending out from the housing opening. The end cap has a guide sliding chute. The sliding pin is in clearance fit with the guide sliding chute. The guide sliding chute has a lower positioning recess and an upper positioning recess. The end cap has a guide ramp below the guide sliding chute, and an end of the positioning pin slidably contacts or touches the guide ramp. The present disclosure also discloses a pull-out control mechanism, including a housing; a hose/cord clamping wheel set including a first rotating wheel and a second rotating wheel, both mounted in the housing; and a locking and releasing mechanism.