Door Handle Centring Assembly with Compensating Ring
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Solution Overview
Problem
Existing door handle sets face challenges in precise assembly and alignment due to variations in handle hole diameters and eccentricities between the handle hole bore and lock follower, making it difficult to achieve a secure and aesthetically pleasing installation.
Innovation Solution
A positioning arrangement comprising a bearing bush and a compensating ring with a neck section divided into sections and grooves, allowing for adjustable alignment and secure mounting of the actuating handle, which can accommodate different bore diameters and shapes, ensuring concentric alignment with the lock follower.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a bearing bush is pressed into the handle hole to center it with the lock follower, then alignment precision is improved, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The bearing bush is pre-assembled with the rosette in a standardized configuration, allowing the entire assembly to be installed as a single unit into the handle hole. This preliminary preparation eliminates the need for complex on-site alignment and pressing operations, while still achieving precise centering with the lock follower through the standardized design.
2Shape
If the rosette size is reduced for aesthetic purposes, then appearance quality is improved, but the structural stability and mounting security deteriorate
Solution Approach 1:
The mounting function is segmented from the rosette's aesthetic function. The bearing bush provides the structural mounting security and stability, while the rosette serves primarily as a decorative cover. This segmentation allows the rosette to be minimized in size for aesthetic purposes while the bearing bush maintains adequate dimensions for secure mounting.
3Adaptability or versatility
If standard distances and dimensions are followed for compatibility, then adaptability is improved, but the ability to minimize rosette size is reduced
Solution Approach 1:
The bearing bush is pre-configured with standardized mounting dimensions and distances that ensure compatibility with different lock followers and door handle systems. This preliminary standardization allows the rosette to be minimized in size since the compatibility requirements are already satisfied by the bearing bush's standardized interface.
4Reliability
If the bearing bush is pressed in tightly for secure mounting, then mounting reliability is improved, but the alignment precision may deteriorate due to deformation
Solution Approach 1:
The bearing bush is pre-assembled with the rosette in a controlled manufacturing environment where precise alignment can be achieved without deformation. This preliminary assembly allows the components to be tightly secured through standardized pressing operations while maintaining alignment precision, avoiding the deformation that would occur if tight mounting were attempted after installation.
Data Source
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AI summary
A positioning arrangement (1) for a door handle set (100) that can be mounted on a door leaf (200) has a bearing bushing (50) for aligning a pivot axis (D) of an operating handle (110) of the door handle set (100) in a handle hole bore (210) of the door leaf (200). The bearing bushing (50) is provided with a bearing opening (51) for receiving and rotatably mounting the operating handle (110) about the pivot axis (D). The positioning arrangement (1) further has a compensating ring (10) which has a receiving opening (11) for receiving the bearing bushing (50). The compensating ring (10) can be inserted into the handle hole bore (210) of the door leaf (200), whereby the bearing bushing (50) can be inserted into the receiving opening (11) of the compensating ring (10) in a rotationally fixed manner.For a door handle set (100) with an actuating handle (110) which is rotatably mounted about an axis of rotation (D) on or in a bearing body (L), wherein the bearing body (L) can be inserted into the handle hole bore (210), it is provided according to the invention that a bearing body (L) is an embodiment of the positioning arrangement (1).