Sanitary Fitting Fastening Nut With Slide-and-Lock Mounting
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Solution Overview
Problem
The process of mounting sanitary fittings to mounting objects is tedious and time-consuming, requiring prolonged crouching and straining, especially due to the need to screw a nut along the entire length of a stud, which is uncomfortable and inefficient.
Innovation Solution
A fastening device with a nut that can be positioned in two states - disengaged and engaged - allowing it to be slid onto a stud and then securely locked in place without needing to screw along the entire length, featuring a locking element that prevents disengagement and a connecting element for easy handling as a single assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nut is screwed onto the stud along the entire length to secure the sanitary fitting, then the connection reliability is improved, but the mounting time and user discomfort increase significantly
Solution Approach 1:
The mounting process is divided into two distinct phases: a sliding phase where the nut moves along the stud without threading engagement, and a locking phase where the nut is secured in position. This segmentation allows the nut to be positioned quickly along the stud length before being locked, rather than requiring continuous screwing throughout the entire length.
Solution Approach 2:
The nut is first slid into its final mounting position along the stud before the locking mechanism is activated. This preliminary positioning action is much faster than screwing, and the locking mechanism then secures the nut in place, separating the positioning function from the securing function.
2Reliability
If the nut is screwed onto the stud from a distance, then the connection is secured, but the user must maintain an uncomfortable crouching position for extended periods
Solution Approach 1:
The fastening operation is segmented into a sliding phase that can be performed from a more comfortable position, and a locking phase that secures the connection. This reduces the time the user must spend in the uncomfortable crouching position while maintaining fastening security.
Solution Approach 2:
The locking mechanism acts as an intermediary that transfers the securing function from the user's manual screwing action to a mechanical locking system. Once the nut is positioned, the locking mechanism secures it automatically, reducing the physical effort and uncomfortable positioning required.
3Reliability
If the locking element is integrated separately from the nut, then the locking function is improved, but the device complexity and handling difficulty increase
Solution Approach 1:
The locking element and the nut are merged into a single integrated assembly where the locking mechanism is built into the nut structure itself. This integration maintains the reliable locking function while simplifying handling, as the user deals with a single pre-assembled component rather than separate parts that must be coordinated during installation.
Data Source
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AI summary
A fastening device 10; 110 for fastening a sanitary fitting to a mounting object, comprising: a) a nut 12; 112 having a screw threading portion 24; 124, the nut being positionable on a stud 11 of the sanitary fitting in two positions, the stud having a threading 15, wherein - in a first position the screw threading portion 24; 124 is disengaged from the threading 15 of the stud 11 and - in a second position the screw threading portion 24; 124 is engaged with the threading 15 of the stud 11, and b) a locking element 14; 114 configured to disallow the screw threading portion 24; 124 of the nut 12; 112 to disengage from the threading 15 of the stud 11 when the nut 12; 112 is in the second position; wherein c) the nut 12; 112 can be brought from the first position to the second position by displacing the nut 12; 112 in a non-parallel direction A with respect to the screw axis x of the stud 11 of the sanitary fitting or by rotating the nut 12; 112.