Deformable Connecting Rod Section for Form-Fit Fitting
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Solution Overview
Problem
Existing connecting rod fittings for windows and doors are costly due to complex assembly requirements and limited positional adjustment, leading to high production expenses and inefficient force transmission.
Innovation Solution
A connecting rod design featuring cutting or embossing edges on one section that deform the other section for a form-fitting connection, eliminating the need for additional components and allowing grid-free positioning, with one section being made of deformable material like plastic or die-cast zinc for cost reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional components like locking members, pressure elements, or clamping springs are used to connect connecting rod sections, then the connection stability is improved, but the device complexity and production costs increase
Solution Approach 1:
The invention merges the connecting rod sections directly with each other through deformation, eliminating the need for separate locking members, pressure elements, or clamping springs. The first connecting rod section is deformed to directly engage with the second section, combining multiple functions into a single integrated connection mechanism.
Solution Approach 2:
The invention extracts and removes all additional fastening components from the connection system. By deforming the first connecting rod section directly, the patent eliminates locking members, pressure elements, clamping springs, and other separate components that were previously required to achieve stable connection.
2Strength
If traditional connection methods with separate components are used, then the connection strength is improved, but the ease of manufacture decreases due to complex assembly
Solution Approach 1:
The first connecting rod section serves itself by being deformed to create the connection with the second section. The deformation of the first section directly creates the engaging structure, eliminating the need for separate fastening components and complex assembly operations.
Solution Approach 2:
The invention changes the physical state of the first connecting rod section through deformation. By altering the shape and configuration of the first section, it creates a direct form-fitting connection with the second section, achieving strong force transmission without additional components.
3Reliability
If locking members with tooth rows are used to connect connecting rod sections, then the connection stability is improved, but the adaptability for positional adjustment is limited to grid positions
Solution Approach 1:
The invention introduces dynamic adjustability by allowing the first connecting rod section to be deformed to any position along the longitudinal axis of the second section. Unlike fixed tooth-row locking members, the deformed first section can be positioned continuously, providing unlimited positional adjustment within the fitting groove.
4Reliability
If multiple separate components are used in the connecting rod assembly, then the connection reliability is improved, but the production costs increase
Solution Approach 1:
The invention merges all connection functions into the first connecting rod section itself. By deforming this single component, it achieves stable connection without requiring locking members, pressure elements, clamping springs, or other separate parts, thereby reducing production costs.
Solution Approach 2:
The invention extracts and eliminates all additional fastening components from the assembly. The direct deformation of the first connecting rod section creates a reliable connection without any separate components, simplifying manufacturing and reducing costs.
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 design simplifies assembly, reduces production costs, and enables stable, grid-free connection of rod sections, enhancing length compensation and stability while preventing disconnection, thus lowering manufacturing costs and improving performance.
Implementation Method 1
the coupling section of the other of the connecting rod sections can be cut or deformed by one of the cutting or embossing edges, so that a form-fitting connection is generated directly between the connecting rod sections
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The connecting rod (6) has two connecting rod sections (9,10) and two coupling sections of the connecting rod sections lying over one another in a fitting groove with a form-fit connection. The coupling section of one of the connecting rod sections has cutting- or embossing edges arranged transverse to intended movement direction of the connecting rod. The connecting rod sections are connected with each other by a latching connection.