Square Cylindrical Fuel Damper Clip with Locking Claw
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Solution Overview
Problem
Existing fuel damper fixing clips lack sufficient holding force, risking loosening and falling off when subjected to excessive force, making them unsuitable for securely attaching fuel dampers to fuel pipes in internal combustion engines.
Innovation Solution
A fuel damper fixing clip formed from a sheet member in a generally square cylindrical shape with slits and a claw portion, which surrounds and tightens around the collar portions of both the cup and fuel damper, using overlapping ends and a receiving hole to lock the clip in a diameter-reduced state, providing secure fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a U-shaped clip is used to fix the fuel damper to the fuel pipe, then the clip can be easily removed and installed, but the holding force is insufficient and the clip may loosen and fall off when excessive force is applied
Solution Approach 1:
The clip body is divided into multiple flat portions (first, second, third flat portions) that can independently deform. This segmentation allows the clip to accommodate variations in the fuel damper and cup portion dimensions while maintaining secure holding force through distributed contact points across multiple segments.
Solution Approach 2:
The clip body is designed to be deformable rather than rigid, allowing it to dynamically adjust its shape during installation and operation. The flat portions can deform in response to assembly forces and operational loads, enabling the clip to maintain secure engagement while accommodating dimensional variations and thermal expansion.
2Device complexity
If a U-shaped clip is used for fuel damper fixing, then the structure is simple, but the clip lacks sufficient holding force and may loosen under excessive force
Solution Approach 1:
The clip body is divided into multiple flat portions (first, second, third flat portions) that can independently deform. This segmentation allows the clip to accommodate variations in the fuel damper and cup portion dimensions while maintaining secure holding force through distributed contact points across multiple segments.
Solution Approach 2:
The clip body is formed from a sheet member with multiple flat portions that can deform elastically. This flexible structure allows the clip to maintain secure engagement with the fuel damper and cup portion while accommodating dimensional variations and operational loads, preventing loosening under excessive force.
3Strength
If the clip body is made rigid to increase holding force, then the clip can securely fix the fuel damper, but the clip cannot accommodate dimensional variations and may deform improperly
Solution Approach 1:
The clip body is designed to be deformable rather than rigid, allowing it to dynamically adjust its shape during installation and operation. The flat portions can deform in response to assembly forces and operational loads, enabling the clip to maintain secure engagement while accommodating dimensional variations and thermal expansion.
Solution Approach 2:
The clip body is formed from a sheet member with multiple flat portions that can deform elastically. This flexible structure allows the clip to maintain secure engagement with the fuel damper and cup portion while accommodating dimensional variations and operational loads, preventing loosening under excessive force.
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 clip securely fixes the fuel damper by distributing force through slits and locking with a claw portion, preventing loosening and falling off, even under large assembly forces, while allowing some axial movement to prevent damage from closing forces.
Implementation Method 1
the clip main body surrounds portions of the outer peripheries of the cup portion and the fuel damper and deforms in a tightening direction
Data Source
AI summary
A fuel damper fixing clip includes a clip main body formed from a sheet member having a plurality of flat portions, and formed in a generally square cylindrical shape. The clip main body surrounds portions of the outer peripheries of a cup portion and a fuel damper and deforms in a tightening direction. The clip main body includes two ends overlapped on an outside and an inside surface thereof. Slits are disposed in the plurality of flat portions of the clip main body, and the collar portions of the cup portion and the fuel damper are disposed therein and locked in a diameter-reduced state of the clip main body in which the clip main body is tightened. A receiving hole is formed in one of the ends of the clip main body. A claw portion is disposed on the other end of the clip main body obliquely projecting in a direction opposite to the tightening direction. The claw portion is disposed in the receiving hole in the diameter-reduced state in which the clip main body is tightened, and locks the clip main body in the diameter-reduced state in which the collar portions are fixed.