Bracket With Toothed Disk For Tunnel Supply Line Mounting
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Solution Overview
Problem
Existing brackets for fastening supply lines to walls are expensive to manufacture and lack variability and load-bearing capacity.
Innovation Solution
A bracket design featuring a disk with toothed elements that engage with counter-toothed elements on a fastening part, allowing for stepless adjustment of the support arm's pivot position and high force transmission, along with a U-shaped cross-section for stability and easy assembly, enabling low-cost production and high variability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If cross corrugations or interlocking toothings are provided on the support arm and fastening part, then load-bearing capacity is improved, but manufacturing cost increases
Solution Approach 1:
The toothed connection is segmented into two parts: toothed elements on the disk and counter-toothed elements on the fastening part. This segmentation allows the support arm to maintain a simple, inexpensive design while the fastening part bears the complexity of the toothed structure, resolving the contradiction between load-bearing capacity and manufacturing cost.
2Strength
If the support arm is designed with complex features for high force transmission, then load-bearing capacity is improved, but device complexity increases
Solution Approach 1:
The complex toothed force transmission features are extracted from the support arm and placed on the fastening part. The support arm itself remains a simple component with a constant cross-section, while the fastening part contains all the toothed elements necessary for high force transmission and form-fitting fixation.
3Adaptability or versatility
If multiple slots are provided for different pivot positions, then adjustability is improved, but assembly effort increases
Solution Approach 1:
A single elongated hole serves multiple functions: it allows the fastening bolt to protrude through for all possible pivot positions, enables form-fitting connection via counter-toothed elements, and provides guidance for the disk. This universal design eliminates the need for multiple separate slots, maintaining adjustability while significantly reducing assembly effort.
4Adaptability or versatility
If the support arm has varying cross-section for different positions, then adaptability is improved, but manufacturing complexity increases
Solution Approach 1:
Instead of changing the geometric parameters of the support arm itself, the invention changes the position parameter of the fastening bolt through the elongated hole to achieve different pivot positions. The support arm maintains a constant cross-section throughout, making it easy to manufacture from standard profiles while still providing the required adaptability.
Data Source
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AI summary
A bracket (1) for attaching supply lines or the like to a wall, in particular the wall (2) of a tunnel tube, has a mounting part (3) for attachment to the wall (2) and a support arm (4) held on the mounting part (3). The support arm (4) is pivotally mounted on the mounting part (3) at a pivot joint (5) about a pivot axis (10). The bracket (1) has a fixing device (11) for fixing the support arm (4) to the mounting part (3) in different rotational positions. The fixing device (11) comprises a fixing bolt (12) that projects through at least one opening (20) of the support arm (4) and at least one elongated hole (13) of the mounting part (3).A simple construction results if the fixing device (11) comprises at least one disc (17) with an opening (36), wherein the fastening bolt (12) protrudes through the opening (36) and wherein the disc (17) has toothed elements (18, 48) which engage in counter-toothed elements (16, 46) on the fastening part (3).