Adjusting Spindle Fixation via Plastic Deformation in Hinge Mountings
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Solution Overview
Problem
Existing door hinge designs require additional elements like screws or rivets to secure adjusting spindles, which can be lost during assembly or disassembly, and involve complex processes like reshaping spindles, leading to inefficiencies and potential misalignment.
Innovation Solution
The adjusting spindle is secured within a carrier or joint receiving part through plastic material deformation, creating a diameter change that interacts with a formation in the receiving bore, allowing secure fixation without additional elements, ensuring minimal play and preventing jamming, with options for circumferential or sectional diameter changes and cam formations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional elements like screws or rivets are used to secure adjusting spindles, then the adjusting spindle is fixed securely, but the device complexity increases and the fasteners can be lost during assembly or disassembly
Solution Approach 1:
The adjusting spindle is integrated directly into the carrier body through a receiving bore, eliminating the need for separate fastening elements like screws or rivets. The spindle becomes an inherent part of the carrier structure, reducing device complexity while maintaining secure fixation.
Solution Approach 2:
The receiving bore itself provides the securing function through its geometric design and material properties, without requiring additional fastening components. The structure serves its own fastening purpose, eliminating the need for external fasteners that could be lost.
2Reliability
If adjusting spindles are secured with screws or rivets, then the spindle is fixed, but the manufacturing process becomes more complex involving reshaping or additional assembly steps
Solution Approach 1:
The adjusting spindle and carrier are designed as integrated components where the spindle fits into a receiving bore formed directly in the carrier body. This merging of components eliminates the need for separate fastening operations, simplifying the manufacturing and assembly process.
Solution Approach 2:
The receiving bore is pre-formed in the carrier body with appropriate dimensions and features to accommodate the adjusting spindle. This preliminary preparation of the mounting structure allows for straightforward assembly without requiring complex reshaping or additional fastening steps during assembly.
3Reliability
If additional fastening elements are used, then the adjusting spindle is secured, but the risk of losing fasteners during assembly or disassembly increases
Solution Approach 1:
The adjusting spindle is merged with the carrier structure through the receiving bore, making the spindle an integral part of the assembly. This integration eliminates separate fastening elements that could be lost, as the spindle itself provides the securing function through its fit within the bore.
Solution Approach 2:
The adjusting spindle serves its own fastening function through its design and fit within the receiving bore, without requiring external fasteners. This self-service approach eliminates the risk of losing separate fastening elements during assembly or disassembly operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a secure and efficient means to position door hinges with minimal play, avoiding the need for extra fasteners and ensuring accurate alignment, while maintaining rotatability and stability, thus facilitating precise door positioning.
Implementation Method 1
the material of the carrier or joint receiving part having the receiving bore having at least one formation formed by plastic material deformation, which reduces the diameter of the receiving bore in sections and which is connected in this way to the Diameter change interacts that the adjusting spindle is secured against displacement
Data Source
Figure 1A~3
Figure 4
Figure 5~7
AI summary
The mounting part (1) has an adjusting spindle (4) rotated in a mounting hole (7) of a carrier (2) or a joint receiving part (3) and secured against a shift in a spindle longitudinal direction. Diameter of the adjusting spindle is changed inside the mounting hole. The material of the carrier and/or the joint receiving part has a molding (8) that is formed by a plastic material formation. The molding controls the diameter of the mounting hole in sections, and cooperates with the change of diameter such that the adjusting spindle is secured against a shift in spindle longitudinal direction.