Profile Assembly with Conical Punching Screw for Tight Fit
Solution Overview
Problem
Existing profile arrangements in window systems, such as those using butt connectors, often experience unwanted play due to tolerances and surface finishing issues, leading to a loose fit between the profiles.
Innovation Solution
Incorporating a punching screw with a conical section between the threaded section and the punching spigot ensures a tight fit by generating pressure against the form-fitting connection, preventing play between the first profile and the butt connector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a butt connector is connected to the first profile by means of a positive connection (T-shaped profile and C-shaped groove), then the butt connector can be easily positioned and assembled, but unwanted play and wobble occur due to tolerances and surface finishing issues
Solution Approach 1:
The punching screw changes the physical state of the connection by applying compressive force, transforming the loose positive connection into a tight fit. The conical section converts rotational screwing motion into linear pressing force, dynamically adjusting the connection parameters to eliminate play while maintaining ease of assembly.
Solution Approach 2:
The positive connection (T-shaped profile and C-shaped groove) provides preliminary positioning and form-fitting connection before the punching screw is applied. This preliminary action guides the butt connector into the correct position, and the punching screw then completes the tightening process.
2Ease of manufacture
If tolerances in the first profile, butt connector, and surface finishing are accommodated, then manufacturing flexibility is maintained, but the butt connector wobbles and plays in the connection
Solution Approach 1:
The punching screw applies compressive force that compensates for dimensional variations and surface finishing tolerances. By dynamically adjusting the connection pressure, the system maintains reliable connection stability while accommodating manufacturing flexibility in the profile and connector dimensions.
Solution Approach 2:
The conical section of the punching screw preemptively counteracts the harmful effect of tolerances by applying pressing force that eliminates play before it can manifest as wobble or instability in the connection.
3Device complexity
If a conventional punching screw with cylindrical spigot is used, then the screwing process is simple, but the butt connector is not firmly seated and play remains
Solution Approach 1:
The punching screw features a conical section with tapered geometry between the threaded portion and spigot. This conical shape converts rotational screwing motion into linear pressing force, firmly seating the butt connector against the first profile and eliminating play while maintaining relatively simple screw construction.
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 conical design of the punching screw effectively secures the butt connector in place, eliminating play and ensuring a stable connection by pressing it firmly into the form-fitting connection, thus providing a reliable and precise positioning.
Implementation Method 1
The punching screw (10) is equipped with a conical section (103) between the threaded section (102) and the punching spigot (104). When the punching screw (10) is screwed in, pressure is generated against the form-fitting connection, which presses the butt connector (3) into the form-fitting connection and thus ensures a tight fit.
Implementation Method 2
The punching pin (104) is conical or cone-shaped. The conical or conical shape of the punching pin (104) makes it easier for the punching pin (104) to penetrate or penetrate into the material of the first profile (1). This ensures exact positioning of the butt connector (3).
Implementation Method 3
The positive connection means comprise a T-shaped profile and a C-shaped groove. Such connecting means are advantageously suitable for providing a form-fitting connection, in particular such that the butt connector could basically be displaced in the longitudinal direction of the C-shaped groove, but could not be lifted out of the C-shaped groove.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Profile arrangement comprising a first profile (1), a second profile (2) and a butt connector (3), wherein the butt connector (3) is mounted perpendicularly on the first profile (1), wherein the second profile (2) comprises at least a partial cavity, wherein the butt connector (3) is inserted into the cavity, wherein the butt connector (3) and the first profile (1) are connected to each other by positive locking means, wherein a punch screw (10) with a threaded section (102) and a punch pin (104) is screwed into the butt connector (3), wherein the punch pin (104) is arranged in an opening (11) of the first profile (1), wherein the punch screw (10) is provided with a conical section (103) between the threaded section (102) and the punch pin (104).