Door Drive Housing Profile with Friction-Locked Plug-In Fastening
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Solution Overview
Problem
Existing door and window drive systems lack a simple and cost-effective fastening option for their components, which can lead to inefficiencies and increased material usage.
Innovation Solution
A drive system featuring a housing profile made from aluminum alloy or plastic, with continuous profile recesses and plug-in elements that provide a form-fitting and friction-locked fixation, along with a hydraulic system that includes a spring piston and energy storage, allowing for manual or hydraulic operation and material-efficient design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If traditional fastening methods are used for door and window drive components, then structural integrity is maintained, but material usage increases and cost effectiveness decreases
Solution Approach 1:
The housing profile is divided into multiple sections with integrated profile recesses at regular intervals. These recesses are designed to receive corresponding plug-in elements from cover components, creating modular fastening points that distribute mechanical loads across multiple locations rather than relying on continuous material usage.
Solution Approach 2:
The plug-in elements are inserted into the profile recesses in a nested arrangement, where the cover component's fastening elements fit within the housing profile's recesses. This nesting creates a compact, space-efficient fastening mechanism that reduces material requirements while maintaining secure connection.
2Reliability
If complex fastening mechanisms are used to secure components, then fixation reliability improves, but device complexity and manufacturing cost increase
Solution Approach 1:
The profile recesses and plug-in elements are designed to engage automatically through form-fitting geometry and friction-locking surfaces. The conical sleeves with insertion bevels self-align and guide the cover components into correct positioning, while the friction-locked plug-in elements maintain secure fixation without requiring additional fasteners or complex assembly steps.
Solution Approach 2:
Traditional mechanical fastening systems (screws, welds, adhesives) are replaced with a friction-locked plug-in mechanism that utilizes geometric interlocking and surface friction. The conical sleeves and insertion bevels create a self-contained fastening system that eliminates the need for separate fastening components.
3Strength
If covers are permanently attached to housing profiles, then fixation strength increases, but ease of removal and maintenance decreases
Solution Approach 1:
The fastening system transitions from a static permanent attachment to a dynamic reversible connection. The friction-locked plug-in elements provide strong fixation during normal operation but allow controlled removal when needed. The conical sleeves with insertion bevels enable easy insertion and removal through axial forces, making the connection adaptable to both secure fixation and maintenance requirements.
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
The solution offers a cost-effective and visually appealing fastening mechanism that reduces material usage and ensures secure fixation of components, enabling efficient operation and easy removal of covers without paint adhesion.
Implementation Method 1
a spring piston and an energy store in the form of a compression spring, which is charged by manual opening and causes the door or window to be guided back into its closed position after opening
Implementation Method 2
The present drive can also have a hydraulic pump, which makes it possible to hydraulically displace the spring piston against the compression spring, as a result of which the compression spring is pretensioned
Implementation Method 3
the plug-in element can be held in the profile recess in a form-fitting and/or friction-locked manner in order to fix the panel on the end face of the profile
Implementation Method 4
the sleeves are designed to be conical in their extension towards the inner surface of the panel
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention describes a drive for a wing of a door, or a sash of a window, having a housing, wherein the housing has at least one housing profile having at least one profile recess that is continuous in the longitudinal extension of the door lock and that is open on the fronts thereof, and wherein the housing profile can be covered on at least one of the fronts by means of a cover. The cover (12) has at least one pin element (13) for affixing the same to the housing profile (7), wherein the element engages in the profile recess (9) on the front.