Profile Pipe Connector Anti-Twist Lug Design
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Solution Overview
Problem
Conventional profile tube systems require additional components like tile crosses for rotational fixation, increasing production, storage, and assembly costs, and are not suitable for double tube profiles without modifying the web, which adds manufacturing costs.
Innovation Solution
A connector with integrated anti-twist lugs formed in one piece with the half-shells, eliminating the need for separate components and allowing use with double tube profiles by incorporating a tongue and groove connection, enabling cost-effective production and assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate tile cross component is used for rotational fixation of the profile tube, then the profile tube can be rotationally fixed in the tube socket, but additional production, storage, logistics and assembly costs are incurred
Solution Approach 1:
The anti-twist lug is integrated directly into the half-shell of the connector, merging the rotational fixation function with the connector body. This eliminates the need for separate tile cross components while maintaining reliable rotational fixation of the profile tube through the lug engaging with the longitudinal groove.
Solution Approach 2:
The half-shell is designed to serve multiple functions: it provides the clamping structure for securing the profile tube, forms the tube socket for reception, and incorporates the anti-twist lug for rotational fixation. This multi-functional design eliminates the need for additional specialized components.
2Adaptability or versatility
If conventional connectors are used for double tube profiles, then the web must be removed in the longitudinal end area, but additional manufacturing or manufacturing costs are required
Solution Approach 1:
The connector is divided into two separate half-shells that can be assembled around the double tube profile. This segmentation allows the web connecting the two parallel profile tubes to pass through the space between the half-shells, eliminating the need to remove the web while maintaining structural integrity.
Solution Approach 2:
The two half-shells are designed to nest together around the double tube profile, with the web passing through the gap between them. This nesting arrangement accommodates the web structure without requiring its removal, allowing the connector to adapt to double tube profiles without additional manufacturing steps.
Data Source
Figure 1~3
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Figure 7~10
AI summary
The invention relates to a profile tube system (1) comprising at least one profile tube (2) with at least two parallel longitudinal grooves (3), and a connector (4) for longitudinal end attachment to the profile tube (2), which has a first half-shell (5) and a second half-shell (6) that can be screwed together via a screw connection (7), wherein the connector (4) has a blind-hole-like tube receptacle (8) with a base (9) into which the profile tube (2) can be inserted and in which the profile tube (2) can be fixed via the two half-shells (5, 6) that are screwed firmly together. A key feature of the invention is that at least one inwardly projecting lug (11) is arranged on an inner surface of the tube receptacle (8) of the first and/or second half-shell (5, 6), which, in the assembled state, engages in a longitudinal groove (3) of the profile tube (2) and forms an anti-rotation device for the profile tube (2).