Water Spray Gun Rotary Control Valve Multi-Stage Flow Adjustment
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Solution Overview
Problem
Conventional water spray guns require separate operation of two control members for adjusting the amount of water outflow and controlling continuous outflow, which is inefficient and cumbersome.
Innovation Solution
Integration of two control members into a single control part using a rotary control member with step-like parts and a press part, allowing for axial movement of a movable valve stem to adjust the water outflow gap, enabling multi-stage control of water flow with a single operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two control members are used separately for adjusting water outflow amount and controlling continuous outflow, then the control functions are achieved, but the operation becomes cumbersome and inefficient
Solution Approach 1:
The patent combines two separate control members (adjusting nut for outflow amount and positioning member for continuous outflow control) into a single integrated control member. This control member has a rotating portion for selecting outflow stages and a pressing portion for controlling continuous outflow, allowing both functions to be achieved through one component, thereby improving ease of operation while maintaining necessary control functionality
Solution Approach 2:
The integrated control member serves multiple functions: it can rotate to select different outflow stages (first function) and can be pressed to control continuous outflow (second function). This multi-functional design eliminates the need for separate control members for each function, resolving the contradiction between device complexity and ease of operation
2Adaptability or versatility
If two control members are used for water outflow control, then the control functions are achieved, but the user experience deteriorates due to cumbersome operation
Solution Approach 1:
The patent merges the adjusting nut and positioning member into a single integrated control member with a rotating portion and a pressing portion. This allows users to control both outflow amount adjustment and continuous outflow control through one component, improving user experience by eliminating the need to operate two separate control members while maintaining full control functionality
3Ease of operation
If a single control member is used for both outflow adjustment and continuous flow control, then ease of operation is improved, but the precision of water outflow control may be compromised
Solution Approach 1:
The integrated control member is segmented into distinct functional portions: a rotating portion with step-like parts for precise multi-stage outflow adjustment, and a pressing portion for continuous outflow control. The step-like parts provide discrete positioning stages for precise water outflow control, while the pressing portion enables continuous adjustment. This segmentation maintains measurement precision while achieving operation simplicity
Solution Approach 2:
The control member provides dynamic control capabilities through two modes: rotational movement for discrete multi-stage adjustment (providing precise control at different levels) and pressing movement for continuous adjustment (providing fine-tuned control). This dynamic design allows the single control member to maintain precision across different operational modes while improving ease of operation
Data Source
AI summary
A water spray gun for control of an outflow of water and adjustment of the amount of the outflow is revealed. The water spray gun includes a handle portion, a pipe portion connected to the handle portion and used for spraying water, and a control device arranged at the position where the pipe portion meets the handle portion. The control device comprises a press part and a rotary control member. The amount of the water outflow is controlled by the rotary control member. The amount of the outflow sprayed out from the pipe portion at respective stages is continuously controlled and regulated by the control device.