Spring Hose Clamp Overlap Structure for Continuous Sealing Pressure
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Solution Overview
Problem
The existing hose band designs for connecting automobile pipings with hoses suffer from a non-continuous surface pressure distribution, leading to reduced fastening and sealing performance due to gaps between the inner sides of the narrow portions when the locking claws are engaged, resulting in decreased sealing efficiency between the hose and pipe.
Innovation Solution
A hose clamp with a curved plate spring body and tab portions that expand and reduce in diameter, featuring engagement portions on the tab portions to maintain the expanded state without protruding from the arm portions, allowing for closer overlap of arm portions when reducing diameter, thereby minimizing the gap between inner edges and enhancing sealing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the first locking claw and the second locking claw protrude from the inner sides of the narrow portions to enable engagement, then the hose band can be fastened and fixed, but a relatively large gap is formed between the inner sides of the narrow portions, resulting in non-continuous surface pressure and decreased sealing performance
Solution Approach 1:
The hose band is divided into multiple functional segments: a base portion, first and second arm portions extending from the base, and first and second overlap portions at the tip ends of the arm portions. This segmentation allows each portion to serve a specific function while working together to eliminate gaps and ensure continuous surface pressure for improved sealing performance.
2Reliability
If the diameter of the plate spring body is reduced to fasten the hose, then sealing performance improves, but the tab portions must be positioned to maintain engagement without protruding from the arm portions
Solution Approach 1:
The engagement portions are positioned at specific locations on the tab portions that are closer to the side edge portions opposite to the facing side edge portions of the overlap portions than to the facing side edge portions. This localized positioning ensures that when the diameter is reduced, the engagement portions maintain proper engagement without protruding from the arm portions, while the overlap portions remain close together to minimize gaps and ensure continuous surface pressure for reliable sealing.
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 design improves the sealing performance between the hose and pipe by reducing the gap between the inner edges of the hose clamp, ensuring a continuous surface pressure distribution and maintaining the hose in an expanded state for effective sealing.
Implementation Method 1
A diameter of the plate spring body is reduced when the pair of tab portions are separated from each other and is expanded when the pair of tab portions are brought close to each other
Data Source
AI summary
There is provided a hose clamp, including a plate spring body and a pair of tab portions. The plate spring body has a base portion, and arm portions. A first overlap portion and a second overlap portion are formed at the arm portions, and in a state where a diameter of the plate spring body is reduced, the first overlap portion and the second overlap portion overlap with each other in the circumferential direction of the plate spring body. Engagement portions are provided on facing surfaces of the pair of tab portions respectively, the engagement portions holding the plate spring body in a state where the diameter of the plate spring body is expanded. The engagement portions are provided at positions closer to side edge portions being opposite to facing side edge portions of the overlap portions than to the facing side edge portions.