Drain Valve Switch Clutch Structure Anti-Theft Design
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Solution Overview
Problem
Existing flushing valve actuators in public places are easily disassembled and removed, leading to toilet failures and poor public health due to their simple and accessible design.
Innovation Solution
A flushing valve actuator with a clutch structure that includes a linkage member movable between two positions, allowing locking or unlocking of the actuator when in the first position, and preventing disassembly by disconnecting the linkage between the switch body and the thread member when in the second position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the switch is directly locked on the water tank cover through thread connection, then the switch can be easily disassembled by rotating the switch body, but this makes the flushing valve actuator vulnerable to unauthorized removal and damage
Solution Approach 1:
The linkage member is designed to be movable between two positions: a first position during assembly where the thread member can rotate freely, and a second position during normal use where the linkage is disconnected. This dynamic reconfiguration allows the system to transition from an easily assembled state to a secured state where the thread member cannot be rotated to disassemble the switch.
Solution Approach 2:
The linkage member acts as an intermediary between the switch body and the thread member. It transfers rotational motion from the switch body to the thread member during assembly, but disconnects this linkage during normal use, preventing unauthorized disassembly while maintaining the functional connection during installation.
2Reliability
If a clutch structure with linkage member is added to prevent unauthorized disassembly, then the anti-theft performance is improved, but the device complexity increases
Solution Approach 1:
The clutch structure merges the linkage member with the existing switch body and thread member components. The linkage member integrates the clutch functionality into the assembly process itself, using the same rotational motion that assembles the switch to also engage the security mechanism, rather than adding a completely separate locking system.
Solution Approach 2:
The assembly process itself activates the security mechanism. When the switch body is rotated to assemble the flushing valve actuator, the linkage member automatically transitions from the first position to the second position, engaging the clutch structure and preventing future disassembly without requiring separate locking actions or additional components.
Data Source
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AI summary
The present disclosure provides a drain valve switch with a clutch structure, and a drain valve. The drain valve switch includes a switch body, a switch mounted on the switch body, a thread member, and a linkage member movable between a first position and a second position; when the linkage member is located at the first position, the switch body drives the thread member to rotate through the linkage member, and the switch body is locked or unlocked through the thread member; when the linkage member is located at the second position, the linkage member disconnects the linkage between the switch body and the thread member. When the drain valve switch is assembled or disassembled, the linkage member is placed at the first position, the switch body links the thread member through the linkage member, and the switch body is rotated to drive the thread member to rotate, so that the entire drain valve switch is locked or unlocked on a water tank or another device. The linkage member is adjusted to the second position during normal use. At this time, even if the switch body is rotated, the thread member cannot be driven to screw out of the installation position, so that the drain valve switch is unlikely to be disassembled.