Door Handle Mounting Device with Integrated Bush and Snap-Stop
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Solution Overview
Problem
Existing handle mounting systems for doors and windows require additional components like attachment washers or bases, increasing production costs and complexity, and are limited by the bulk of the moving device encased in the profile, making them difficult to mount securely and precisely on various profile materials and thicknesses.
Innovation Solution
A device comprising a base body with connection members, a bush, and snap-stop means that allows for secure and precise mounting of handles directly to the door or window profile without additional bases, using a bush with a polygonal cross-section hole to engage the pin and snap-stop mechanisms for angular positioning, enabling stable and secure attachment regardless of profile material or thickness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If attachment washers or bases are used to mount handles, then secure mounting is achieved, but production costs increase and assembly operations become more complex
Solution Approach 1:
The patent merges the attachment base and the angle stop reference members into a single integrated component. The base body directly incorporates the reference members that define angular positions, eliminating the need for separate attachment washers or bases. This integration reduces the number of parts and simplifies assembly operations while maintaining secure mounting functionality.
Solution Approach 2:
The base body serves multiple functions simultaneously: it provides the mounting interface for securing the handle to the profile, contains the reference members for angular positioning, and integrates the coupling mechanism for the pin. This multi-functionality eliminates the need for separate specialized components, reducing both complexity and cost.
2Manufacturing precision
If attachment washers or bases are used, then correct angular positioning is achieved, but assembly time increases
Solution Approach 1:
The reference members defining angular positions are pre-integrated into the base body during manufacturing. This preliminary action ensures that the angular positioning capability is built-in from the start, eliminating the need for separate positioning components and reducing assembly time while maintaining precise angular positioning accuracy.
3Stability of the object's composition
If moving devices are encased in hollow seats formed in the profile, then structural integration is achieved, but the overall bulk increases
Solution Approach 1:
The patent extracts the essential mounting and positioning functions from the bulky encased moving device structure and consolidates them into a compact base body. By taking out only the necessary functional elements (mounting interface and reference members) and eliminating unnecessary bulk, the design achieves structural integration while significantly reducing overall volume.
4Reliability
If additional bases are used for mounting, then secure attachment is achieved, but the number of components increases
Solution Approach 1:
The patent combines multiple previously separate components (attachment base, reference members for angular positioning, and mounting interface) into a single integrated base body. This merging reduces the number of components while maintaining secure attachment functionality, as the integrated base body performs all necessary functions in one piece.
Data Source
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AI summary
A device (10) for mounting a handle (100) at a leaf of a door or window, wherein the handle (100) comprises a main body (101) defining a handgrip and a pin (102) having polygonal cross section engageable with a moving device (300) for moving opening and closing members of the door or window, wherein the moving device (300) is housed in a recess (201) of the leaf and is controlled by the pin (102), said device being characterised in that it comprises a base body (11) that is provided with connection members (12) for the rigid, complete and removable connection of the base body (11) at a leaf of a door or window, a bush (13) that is supported by the base body (11) in a rotary manner around a rotation axis (R) coinciding with the longitudinal axis of the bush (13), wherein the bush (13) is crossed by a through hole (130) that is coaxial to the rotation axis (R) and that, along at least one axial segment thereof, has polygonal cross section substantially matching that of the pin (102), first axial locking members (14) for locking the relative sliding of the base body (11) and of the bush (13) along the rotation axis (R), and snap-stop means (15) for removably stopping the bush (13) in at least two different angular positions and that are arranged between the base body (11) and the bush (13), wherein the device (10) can be fixed to a wall (202) of the leaf at a slot (203) formed at said recess, with the rotation axis (R) substantially orthogonal to said wall (202), and wherein the bush (13) can be crossed by the pin (102), the mutually axially opposite end segments of which - a first axial end segment (102a) and a second axial end segment (102b), respectively - project from the opposite faces of the device (10) and respectively engage in the moving device (300) and in the main body (101) of the handle, an intermediate axial segment (102c) of the pin arranged between the end segments thereof, coupling with a prismatic coupling with the bush (13).