Shower Head Inner Core Assembly Retention Mechanism
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Solution Overview
Problem
Conventional shower heads with inner cores are unsafe due to the risk of the inner core assembly flying out when detached or disassembled under high water pressure, potentially harming the user.
Innovation Solution
The shower head design incorporates a return spring and inlet valve core assembly that prevents the inner core assembly from being dislodged by controlling the water flow, ensuring the inner core assembly remains secure and does not fly out when detached or accidentally disassembled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the inner core assembly is detachably installed in the inlet waterway to facilitate replacement, then the ease of operation is improved, but the reliability deteriorates because the assembly may fly out due to water flow impact
Solution Approach 1:
The patent introduces an inlet valve core assembly as an intermediary component between the water inlet passage and the inner core chamber. This assembly includes a valve core that can be moved to block the water inlet, and a return spring that provides a retaining force. The intermediary structure allows the inner core assembly to remain securely in place during normal operation while enabling easy replacement when needed.
Solution Approach 2:
The return spring in the inlet valve core assembly预先 exerts a retaining force on the valve core, creating a preliminary counter-action against the water flow pressure. When the inner core assembly is properly installed, the valve core is held in a position that blocks the water inlet, preventing water flow from pushing the inner core assembly out. This preliminary anti-action ensures security during operation.
2Reliability
If the inner core assembly is securely fixed to prevent flying out, then the reliability is improved, but the ease of operation deteriorates because replacement becomes difficult
Solution Approach 1:
The inlet valve core assembly is designed with movable components, specifically the valve core that can be shifted between a blocking position (when inner core assembly is installed) and an unblocking position (when replaced). The return spring provides dynamic retention force that maintains security during operation but allows easy removal when the assembly is pulled out. This dynamic design resolves the contradiction between secure fixation and easy replacement.
Solution Approach 2:
The return spring automatically restores the valve core to its blocking position after the inner core assembly is removed, without requiring manual intervention to reset the mechanism. The system self-regulates: when the inner core assembly is installed, it pushes the valve core to block water flow; when removed, the spring automatically returns the valve core to maintain the blocked state, preventing water leakage.
3Reliability
If the inlet valve core assembly blocks the water inlet to prevent inner core assembly from flying out, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The inlet valve core assembly is segmented into distinct functional components: the valve core (with water channel and blocking end), the return spring (for retention), and the housing structure. This segmentation allows each component to perform its specific function independently while maintaining overall simplicity. The valve core handles water flow control, the spring provides retention force, and the housing provides structural support.
Solution Approach 2:
The inlet valve core assembly serves multiple functions simultaneously: it blocks water flow to prevent the inner core assembly from flying out, it provides a mounting structure for the return spring, it guides the inner core assembly during installation and removal, and it maintains water pressure in the system. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity.
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 effectively prevents the inner core assembly from being dislodged by the water flow, enhancing user safety and maintaining functionality during normal operation and disassembly scenarios.
Implementation Method 1
The inlet valve core assembly includes a return spring and an inlet valve core for controlling whether the water inlet passage communicates with the inner core chamber by moving. Two ends of the return spring abut against an inner wall of the inlet valve chamber and one end of the inlet valve core, respectively.
Data Source
AI summary
A shower head with an inner core includes a shower head body, an inlet valve core assembly, an inner core assembly, and a water outlet panel. The inlet valve core assembly is fitted in an inlet valve chamber of the shower head body. A return spring of the inlet valve core assembly abuts against an inner wall of the inlet valve chamber and one end of an inlet valve core. The inner core assembly is detachably fitted inside an inner core chamber. The water outlet panel is connected with the shower head body and provided with a functional water chamber communicating with a water outlet passage. The shower head can prevent the inner core assembly from flying out of the inner core chamber due to the impact of the water flow to hurt the user.