Pipe Clamp With Drop-Off Tightening Indicator Against Leakage
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Solution Overview
Problem
Existing clamps lack a clear indication of tightening status, leading to potential missed tightening and pipe leakage when multiple clamps are used for fixation.
Innovation Solution
A clamp design featuring a clamping band with an elliptical accommodating area, a positioning member that slides and falls off upon tightening, and a tightening lug with a 4-14 mm stroke, ensuring secure fitting and easy operation, along with a top-contact head and limit portion for stability and indication of tightening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple clamps are used for pipe fixation, then the pipe can be securely fixed, but it becomes difficult to track which clamps have been tightened, leading to potential missed tightening and pipe leakage
Solution Approach 1:
The positioning member is designed to change its state visually - it protrudes from the clamp body before tightening and falls off or retracts after tightening, providing a clear visual indication of the tightening status. This allows operators to easily track which clamps have been tightened without adding complex electronic or mechanical indicators.
Solution Approach 2:
The positioning member is designed as a disposable component that falls off after serving its indication purpose. Once the clamp is tightened and the positioning member drops, it signals that the tightening is complete. This simple disposable approach provides reliable indication without requiring complex reusable mechanisms.
2Ease of operation
If the clamp body is made circular for easy installation, then the pipe can be easily fitted, but the clamp may slip or loosen during use
Solution Approach 1:
The clamp body is designed with an elliptical cross-section rather than a perfect circle. The short axis of the ellipse provides a tighter fit on the pipe, creating natural friction and preventing slippage, while the long axis allows sufficient clearance for easy installation and adjustment. This asymmetric geometry simultaneously achieves both ease of installation and anti-looseness.
Solution Approach 2:
The elliptical cross-section of the clamp body provides curved surfaces that conform to the cylindrical pipe. The specific curvature ratio of the ellipse (short axis to long axis ratio of 0.65-0.85) optimizes both the fitting tightness and the ease of installation, allowing the clamp to be easily slipped over the pipe while maintaining secure grip.
3Ease of manufacture
If the positioning member is placed at the end of the long axis, then the clamp body can deform and restore easily, but the positioning member may not contact the pipe properly after deformation
Solution Approach 1:
The positioning member is strategically positioned at a specific location on the clamp body - not at the end of the long axis but at a point that ensures proper contact geometry. This localized positioning ensures that when the clamp body deforms during installation and restores, the positioning member makes accurate contact with the pipe surface, providing reliable tightening indication.
Data Source
AI summary
This application provides a clamp and a method for using the same. The clamp includes a clamping band which is wound to form a clamp body defining an accommodating area. The clamp body is provided with a tightening lug. The clamp body includes an overlapping portion and a single layer portion which is provided with a positioning member. The positioning member is connected to the clamp body such that the positioning member is slidable toward an inner side of the accommodating area with one end extending into the accommodating area. An inner wall of the clamp body is gradually approaching an outer wall of a pipe with the tightening of the clamp, the positioning member moves outward relative to the clamp body until the inner wall of the clamp body rests against the outer wall of the pipe, and then the positioning member falls off from the clamp body.