Hose Clip Claw with Obtuse Angle for Radial Penetration
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Solution Overview
Problem
Existing hose clamps require significant effort and tools to pre-assemble onto a hose, making the process cumbersome and inefficient.
Innovation Solution
A hose clamp design featuring claws with an obtuse angle that allows for radial pressure application, causing the claws to bend and penetrate the hose wall, simplifying the pre-assembly process by forming a staple-like shape that anchors securely without needing lateral force equilibrium and minimizing tool interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional hose clamp design with perpendicular claws is used, then secure anchoring is achieved, but pre-assembly requires high effort and complex tools
Solution Approach 1:
The claw geometry is changed from perpendicular to the base to an obtuse angle (greater than 90 degrees). This parameter change allows the claw to penetrate the hose radially and then bend over, creating anchoring without requiring lateral force application or complex tools. The obtuse angle enables the claw to follow a bending path that converts radial insertion force into circumferential anchoring force.
2Productivity
If radial pressure application is used, then pre-assembly is simplified, but claw deformation control becomes critical
Solution Approach 1:
The claw is designed with a curved bending path that follows an arc as it penetrates and deforms in the hose. The obtuse angle at the base creates a natural bending moment that guides the claw along a curved trajectory, converting linear radial force into controlled circumferential deformation. This curvature principle ensures predictable deformation behavior during radial insertion.
3Reliability
If two claws are used extending from the base, then force equilibrium in circumferential direction is achieved, but structural complexity increases
Solution Approach 1:
While two claws are used for force equilibrium, each claw is asymmetrically shaped with an obtuse angle at the base rather than a symmetric perpendicular configuration. This asymmetric design allows the claws to bend and deform in a controlled manner during radial insertion, creating the staple-like anchoring shape. The symmetry is only in the number of claws, not in their individual geometry.
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 significantly reduces the effort required for pre-assembly, allowing for easy hose clamp attachment with radial pressure, ensuring secure anchoring and efficient hose clamp operation.
Implementation Method 1
the end of the claw, which is at an obtuse angle to the portion connected to the base, penetrates the casing of the hose. Due to the angled arrangement of the end, this penetration initially also occurs radially or parallel to the radial direction. However, after a very short penetration distance, the end is deflected to the side. Since the end of the section that connects to the base cannot follow this deflection, the claw will be bent altogether.
Implementation Method 2
The positioner is preferably arranged on a spring bridge, the ends of which are connected to the clamp casing. The spring bridge has the advantage that the clamp casing can be at a certain distance from the positioner in the area of the positioner if the clamp casing is not yet tight.
Data Source
AI summary
The hose clamp, with at least one positioner with a base and a claw which is pressed into a wall of the clamp, has a section (11,12) of the claw (22,23) which projects inwards from the base (10) in a pressing-in direction (21). The claw has an end (16,17) which with the aforesaid section includes an obtuse angle (alpha ). The end is arranged on an end section (14,15) which directly adjoins the inwards projecting section. The inwards projecting section of the claw is orientated at right angles to the base.