Flushing Tank Fastening Assembly for Top-Side Quick Installation
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Solution Overview
Problem
Existing fastening systems for flushing tanks are complex and impractical, requiring difficult operations to install and remove the flushing tank from the sanitary bowl, especially due to the need to operate from below and the lack of ease in moving components together.
Innovation Solution
A fastening device that allows easy and quick fitting and removal of a flushing tank to a sanitary bowl by operating from above, using a screw, washer, sealing ring, fitting member, and fixing nut with a quick coupling system, which simplifies installation and removal processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional screw and nut fastening system is used, then the flushing tank can be securely fastened to the sanitary bowl, but the installation and removal operations become difficult and time-consuming
Solution Approach 1:
The invention inverts the traditional fastening approach by having the fastening member engage the screw from above rather than from below. The fastening member is inserted through the tank bottom and engages the screw head that protrudes upward, allowing installation and removal operations to be performed from above the tank, which is much easier and more practical than operating from below.
Solution Approach 2:
The fastening system is segmented into distinct functional components: a screw with head and threaded stem, a separate fastening member with internal threading, a sealing element, and a washer. This segmentation allows each component to be optimized for its specific function and enables easy assembly and disassembly without requiring complex integrated structures.
2Ease of manufacture
If traditional fastening components are pre-fitted in the factory, then the fastening system is ready for installation, but packaging and transport become more complex
Solution Approach 1:
The invention merges the screw, sealing element, and washer into a single integrated fastening assembly that can be supplied as one unit. The sealing element is positioned between the tank bottom and the fastening member, while the washer secures the assembly from below. This merging eliminates the need for separate packaging of multiple small components and simplifies transport logistics.
3Reliability
If multiple separate components are used for fastening, then the fastening system can be secure and reliable, but the number of parts increases and assembly becomes more complicated
Solution Approach 1:
The fastening member serves multiple functions: it provides the internal threading for engagement with the screw, incorporates the sealing surface for fluid-tight connection, and includes the structural body that transfers fastening forces. This multi-functionality reduces the total number of components needed while maintaining secure and reliable fastening performance.
Data Source
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AI summary
A fastening device (1) for fastening a flushing tank (2), in particular a flushing tank made of ceramic, plastic or other materials, to a sanitary bowl (3), extends along a longitudinal axis (A) and comprises a screw (11), a washer (12) provided with a sealing ring (13), a fitting member (14) and a fixing nut (15); the screw (11) engages respective holes (26, 34) formed in the washer (12) and in the fitting member (14), and engages a threaded seat (51) formed in the fixing nut (15); the fitting member (14) and the fixing nut (15) are provided with respective flanges (35, 53) facing each other to clamp a wall (6) of the sanitary bowl (3) between them and are joined by a quick coupling system (57) which connects the fitting member (14) and the fixing nut (15) so that the fitting member (14) and the fixing nut (15) are slidable with respect to each other along the axis (A) in a predetermined axial sliding direction in which the flanges (35, 53) move closer to each other, and locked in the opposite direction.