Sanitary Fitting Securing Nut with Sliding and Threaded Passages
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Solution Overview
Problem
The existing sanitary fitting installation process is time-consuming and cumbersome due to the need for a long mounting stud bolt, requiring numerous nut revolutions and an uncomfortable installation position, especially when mounting to thin surfaces like tabletops.
Innovation Solution
A sanitary fitting with a fastening device featuring a fastening rod with a male screw thread and a securing nut having interconnected screw and sliding passages, allowing perpendicular displacement to engage the screw thread for easy mounting and disengagement, reducing the number of nut revolutions needed for tightening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a long mounting stud bolt is used to cover all possible mounting situations, then the sanitary fitting can be mounted to various surfaces including thin tabletops, but the number of revolutions required to screw the nut increases significantly, making the installation time-consuming and cumbersome
Solution Approach 1:
The mounting stud bolt is segmented into two functional parts: a long non-threaded shank portion that provides adaptability for various mounting surfaces, and a shorter threaded portion that engages with the nut. This segmentation allows the bolt to accommodate different installation depths without requiring proportional increases in thread length, thereby reducing the number of revolutions needed for tightening while maintaining versatility across mounting scenarios.
2Adaptability or versatility
If a long mounting stud bolt is used, then all mounting situations can be covered, but the installer is forced into an extremely uncomfortable position, e.g., below a table
Solution Approach 1:
By separating the bolt into a long non-threaded shank and a short threaded section, the threading action occurs closer to the mounting surface rather than extending far below it. This allows the installer to access and turn the nut from a more comfortable position above or beside the mounting surface, eliminating the need to work from uncomfortable positions such as below a table, while still achieving secure fastening.
3Ease of operation
If the male screw thread covers the complete fastening rod, then the nut can be screwed on easily, but the number of revolutions required to reach the necessary tightening torque increases significantly
Solution Approach 1:
The threaded portion of the fastening rod is limited to a specific section rather than covering the entire length. This segmented approach provides sufficient thread engagement for secure fastening and easy nut operation, while avoiding the excessive revolutions that would result from a full-length thread. The non-threaded shank portion eliminates unnecessary threading cycles, thereby increasing mounting speed without compromising ease of operation.
Data Source
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AI summary
The invention relates to a sanitary fitting comprising a fastening device for fastening the sanitary fitting to a mounting through-hole of a sanitary installation, the fastening device comprising a fastening rod connected to the sanitary fitting, the fastening rod comprising at least partially a male screw thread defining a main screw axis, a retaining element to be arranged on a side of the through-hole of the sanitary installation opposite to the sanitary fitting, the retaining element having a top end face, a bottom end face, and a hole extending from the top end face to the bottom end face and through which the fastening rod may be passed, a securing nut (10) being adapted to be screwed onto the male screw thread of the fastening rod, the securing nut (10) having a bottom end face (12), a top end face (14), and a hole (16) extending from the bottom end face (12) to the top end face (14), wherein the hole (16) comprises a screw thread passage (18) and a sliding passage (20), wherein the screw thread passage (18) has an inner surface with a screw portion having at least a partial female screw thread and is adapted to engage with the male screw thread of the fastening rod, and the sliding passage (20) is adapted to receive the fastening rod and is adapted to allow a sliding movement of the fastening rod without the male screw thread of the fastening rod engaging the female screw thread of the securing nut (10), and wherein the screw thread passage (18) and the sliding passage (20) are connected such that the securing nut (10) and the fastening rod may be displaced relative to each other between a securing position in the screw passage (18) and a sliding position in the sliding passage (20).