Window Fitting Bolt Snap-In Locking Spring Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing window and door fittings require complex assembly processes and special components for connecting and disconnecting fitting elements, making them cumbersome and expensive.
Innovation Solution
A detachable snap-in seat with a locking spring that elastically deflects to secure the bolt in place, allowing for simple coupling and decoupling of fitting elements, using a hairpin spring with spring pins that engage in a lateral locking recess to axially secure the bolt, and a slot-shaped receptacle for the connecting rod to facilitate easy alignment and secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex assembly with multiple components is used to connect fitting elements, then the connection reliability is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines the coupling and locking functions into a single integrated mechanism. The L-shaped fitting element with its perpendicular arms and the corresponding recess in the other fitting element create a unified coupling structure that simultaneously achieves connection and axial security, eliminating the need for separate coupling devices and locking mechanisms.
Solution Approach 2:
The L-shaped fitting element serves multiple functions: it provides the coupling interface through its recess, creates axial security through its perpendicular arms, and enables both connection and disconnection operations. This multi-functional design reduces the overall number of components needed in the system.
2Reliability
If special components are used for coupling and locking, then the axial security is improved, but the ease of manufacture decreases
Solution Approach 1:
The fitting elements are divided into modular L-shaped components with standardized recesses and protruding arms. This segmentation allows each component to be manufactured independently using simple processes, then assembled through straightforward coupling of the perpendicular arms into corresponding recesses, achieving axial security without complex manufacturing requirements.
3Ease of operation
If a detachable coupling mechanism is used, then the ease of operation for assembly and disassembly is improved, but the connection reliability may worsen
Solution Approach 1:
Instead of using a complex locking mechanism that requires active engagement steps, the patent inverts the approach by using a passive interference fit design. The perpendicular arms of the L-shaped fitting elements naturally prevent axial separation through geometric constraint, while allowing simple push-to-connect assembly. The disconnection is achieved by overcoming the elastic retention force, providing both ease of operation and reliable connection.
4Reliability
If elastic retention is used to secure the bolt, then the connection reliability is improved, but the device complexity increases
Solution Approach 1:
The elastic retention function is merged into the structural design of the L-shaped fitting elements themselves. The perpendicular arms provide both the mechanical coupling interface and the elastic retention through their material properties and geometric configuration, eliminating the need for separate springs or retaining elements.
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
Enables uncomplicated and cost-effective coupling and decoupling of fitting elements with axial security, allowing for easy assembly and disassembly, and adjustable bolt lengths for different applications, enhancing the fitting's durability and security.
Implementation Method 1
a locking spring (33) which is elastically deflected by the bolt (37) when it is initially inserted and snaps back into a lateral locking recess (43) of the bolt (37) as the bolt (37) is inserted further
Implementation Method 2
the locking spring is designed as a hairpin spring, which has two spring pins for latching into the locking recess of the bolt
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to a fitting (1) for a window, a door or the like, with at least a first and a second fitting element (2,4) and a coupling device (45) by means of which the fitting elements (2,4) are detachably connected to one another, wherein at least the first fitting element (2) is a drive rod (3) and the coupling device (45) has a bolt (37,37') which is arranged transversely to the longitudinal extent of the drive rod (3) in a first recess (6) of the latter and in a second recess (24) of the second fitting element (4).A releasable detent seat (48) is provided for the bolt (37, 37'), wherein the detent seat (48) has a locking spring (33) which is elastically deflected by the bolt (37, 37') when it is initially inserted and is snapped back into a lateral locking recess (43) of the bolt (37, 37') when the bolt (37, 37') is further inserted, thereby axially securing the bolt (37, 37') inserted into the two recesses (6, 24). The invention further relates to a window, a door, or the like with a fitting (1).