Compact Rotary Device for Window Handles with Hidden Clamping Lugs
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rotary devices for window and door handles are cumbersome to install in hollow profiles and appear massive, lacking a compact and visually unobtrusive design, with a need for easy mounting and locking mechanisms to restrict certain operational positions.
Innovation Solution
The rotary device features removable securing elements for clamping lugs, an anti-twist mechanism with a circular mounting surface and radially protruding projections, and a locking mechanism with spring plates or cams interacting with the polygonal receptacle, along with a cam disc and locking pin system to allow controlled rotation and locking of the window or door handle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two lateral brackets with screw openings are provided on the rotating device for fastening to a hollow profile, then the rotating device can be securely fastened, but the rotating device looks massive and visually obtrusive
Solution Approach 1:
The invention extracts the fastening function from traditional lateral brackets and relocates it to clamping lugs that are integrated into the housing structure. These lugs are positioned to be substantially invisible from the front view of the rotary device, thereby maintaining secure fastening while eliminating the visual obtrusiveness of side arms
Solution Approach 2:
The clamping lugs are strategically positioned at specific locations on the housing where they can perform the fastening function effectively while remaining hidden from the primary viewing angle (front view). This creates local structural features that serve a specific function without compromising the overall aesthetic quality of the device
2Adaptability or versatility
If a locking mechanism is added to restrict window or door handle positions, then operational control is improved, but the device complexity increases
Solution Approach 1:
The invention introduces an intermediary locking mechanism that includes a locking element with a locking surface and a corresponding receptacle. This intermediary component mediates between the handle rotation and the housing, providing operational control through a relatively simple interface that limits rotation to predetermined angles without requiring complex multi-component systems
Solution Approach 2:
The locking mechanism is segmented into distinct functional elements: a locking element with a locking surface, a receptacle for receiving the locking element, and a locking direction. This segmentation allows each component to perform its specific function independently, simplifying the overall mechanism while maintaining operational control
3Ease of manufacture
If clamping lugs are made visible for fastening function, then installation is simplified, but the device appearance becomes less sleek
Solution Approach 1:
The fastening function is extracted from visible lateral brackets and relocated to clamping lugs that are integrated into the housing structure in such a way that they are substantially invisible from the front view, thereby maintaining installation simplicity while improving aesthetic appearance
Solution Approach 2:
The clamping lugs are positioned in a spatial arrangement where they perform their fastening function from the sides or rear of the device, moving the visual presence of these functional elements to a different dimensional perspective (side/rear views) while maintaining their mechanical effectiveness
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to a rotary device for window and door handles (50), comprising a housing (20, 20') and a clamping device for attaching the housing (20, 20') to a wall (12) of a hollow profile (10) and a polygonal receptacle (32) for a polygonal pin of the window or door handle (50), wherein a locking mechanism cooperating with the polygonal pin of the window or door handle (50) is provided in the housing (20, 20'), with which the window or door handle (50) can be adjusted in predetermined, different functional positions in angular increments corresponding to detents.In order to make the rotary device as compact as possible, the invention proposes that the clamping device has at least two clamping tabs (24) that can be actuated by screws, which in a mounting position slightly project beyond the housing (20, 20') and in a fastening position bear against an inner side of the wall (12) of the hollow profile (10) and achieve a clamping effect with a housing flange arranged on the outer side of the wall (12) of the hollow profile (10), wherein the clamping tabs (24) are held in the housing (20, 20') in the mounting position by a removable locking element.