Water Spray Gun Multi-Stage Flow Control via Segmented Locking
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Solution Overview
Problem
Existing water spray guns lack the ability to be easily switched between locked and unlocked states and do not offer multi-stage adjustment of water outflow, making them less ergonomic and labor-intensive to use.
Innovation Solution
A water spray gun design featuring a main body, an operating member, a switch part, and a positioning portion, allowing users to control water outflow with one hand and adjust the amount of water sprayed through multiple stages by engaging and disengaging the switch part with the positioning portion, enabling seamless switching between locked and unlocked states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-function locking assembly is used to control water outflow, then the device structure is simple, but the device cannot provide multi-stage adjustment of water outflow
Solution Approach 1:
The control assembly is segmented into multiple functional components: a locking assembly with locking ball and locking grooves for on/off control, and a separate adjusting assembly with adjusting ball and adjusting grooves for multi-stage flow regulation. This segmentation allows each component to perform its specific function independently, achieving multi-stage adjustment capability while maintaining reasonable structural complexity
Solution Approach 2:
The operating member is designed with universal functionality to control both the locking assembly and the adjusting assembly. By integrating multiple control functions into a single operating member, the device achieves multi-stage water outflow adjustment without proportionally increasing the number of operating components, thus balancing versatility with operational simplicity
2Ease of operation
If the operating member is pivotally connected close to the main body, then the locking assembly can be disposed for easy locking, but the operating member cannot provide ergonomic control and multi-stage adjustment
Solution Approach 1:
The operating member is extended beyond the traditional pivotal connection point, creating a longer lever arm that extends toward the handle portion. This dimensional extension provides multiple control points along the operating member's length, enabling ergonomic one-hand operation while maintaining the locking function at the pivotal connection point
Solution Approach 2:
The operating member serves as an intermediary component that transmits user input forces to both the locking assembly and the adjusting assembly. By positioning the pivotal connection close to the main body while extending the operating member toward the handle, it mediates between the user's hand position and the internal control mechanisms, achieving ergonomic control without excessive structural complexity
3Ease of operation
If a traditional single-position locking mechanism is used, then the device structure is simple, but the device cannot provide easy switching between locked and unlocked states
Solution Approach 1:
The locking assembly employs a dynamic locking ball that can move between multiple locking grooves on the adjusting member. This dynamic positioning allows the system to switch easily between locked and unlocked states, as well as between different adjustment stages, by simply moving the locking ball to different groove positions rather than requiring complex mechanical switches
Data Source
AI summary
A water spray gun includes a main body, an operating member and a switch part. The main body includes a handle portion and a tube portion extended from the handle portion and provided with a spray head. A control assembly is enclosed in the main body for control of water outflow and adjustment of the amount of the water outflow. The operating member is pivotally connected to the position where the handle portion meets the tube portion. The switch part is arranged at the operating member and is engaged with the control assembly. The amount of water outflow is controlled by relative movement between the switch part and the operating member.