Pusher Groove Assembly Spring Preload Adjustment
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Solution Overview
Problem
Existing push button assemblies for movable wings require special and expensive tools for assembly and adjustment of the spring preload, making them cumbersome and costly.
Innovation Solution
A pressure nut arrangement with a second guide element to secure the screw against rotation, allowing for easy installation and adjustment of spring preload using standard tools, and a method involving a pre-assembly of a first guide member, an unloaded coil spring, and a nut, where the preload is pre-adjusted via a screw-nut connection, enabling fine adjustment without specialized tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a spring arrangement with adjustable preload is implemented in the pressure nut assembly, then the spring preload can be adjusted to desired values, but special expensive tools are required for assembly and adjustment
Solution Approach 1:
The assembly process is divided into two stages: a pre-assembly stage where the spring arrangement is assembled with the pressure nut and actuating element, and a final assembly stage where the entire unit is installed in the housing. This segmentation allows the spring arrangement to be pre-assembled and adjusted using standard tools before final installation, eliminating the need for special expensive tools during the final assembly operation.
Solution Approach 2:
The spring arrangement is assembled and its preload is adjusted in advance during the pre-assembly stage, before the pressure nut assembly is installed in the housing. This preliminary action allows all adjustments to be made using standard tools during the pre-assembly phase, rather than requiring special tools during the final installation phase.
2Reliability
If the spring arrangement is assembled with desired length and preload, then the operational reliability is improved, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The assembly process is segmented into pre-assembly and final assembly stages. During the pre-assembly stage, the spring arrangement is assembled with the pressure nut and actuating element in a simplified manner. During the final assembly stage, the entire pre-assembled unit is installed in the housing. This segmentation reduces the complexity of the overall assembly process while maintaining the ability to achieve desired spring length and preload.
Solution Approach 2:
The spring arrangement is pre-assembled with the pressure nut and actuating element before final installation in the housing. This preliminary assembly allows the spring to be pre-configured with the desired length and preload using standard tools, simplifying the final installation process while ensuring operational reliability.
3Stability of the object's composition
If the screw is secured against rotation during assembly, then the spring preload setting is stabilized, but an additional guide element is required
Solution Approach 1:
A guide element is introduced as an intermediary component between the screw and the housing. This guide element provides rotational guidance and stabilization for the screw during assembly, preventing unwanted rotation while maintaining a simple overall structure. The guide element acts as a mediator that enables stable screw positioning without requiring complex constraint mechanisms.
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 the assembly of push button assemblies for movable wings without expensive tools, allowing for easy adjustment of spring preload, reducing costs and simplifying the installation process while maintaining operational reliability.
Implementation Method 1
a spring element (22A) of a spring arrangement (20) which generates the spring effect
Implementation Method 2
The pre-assembly assembly is coupled with a mounted pressure nut and the preload of the spiral spring is pre-adjusted via the screw-nut connection
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a push-button assembly (10) for a movable wing, comprising a push-button assembly (12) rotatably mounted in a housing (3), at least one actuating element actuated by the push-button assembly (12), which, when the push-button assembly (12) is actuated against a spring action, causes an unlocking of an associated lock, wherein the push-button assembly (12) is coupled to the actuating element via an actuating arm (14) and to a spring element (22) of a spring assembly (20) which generates the spring action via a spring arm (16), as well as a counter housing (1) and a lock housing (2) for a lock of a movable wing, each comprising such a push-button assembly (10), and a method for mounting a spring assembly (20) for such a push-button assembly (10). According to the invention, the spring assembly (20) comprises an adjusting device (24) by means of which a preload force of the spring element (22) can be adjusted.