Lashing Hook Recess Stop Mechanism
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Solution Overview
Problem
Existing lashing eyelets for motor vehicle loading spaces can be over-tightened, leading to damage to the bracket and the luggage compartment's frame or paneling, as they lack effective mechanisms to prevent excessive pivoting.
Innovation Solution
A lashing eyelet design featuring a recess with radially protruding projections that rest against the recess's inner edge in the use position, preventing further pivoting and potential damage, and utilizing a wire section bracket with projections at the joint to absorb force without bending, along with anti-rotation elements and an elastic means for noise insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bracket is made pivotable to enable easy operation, then ease of operation is improved, but the risk of over-tightening and damage increases
Solution Approach 1:
The recess in the holder pre-defines a safe operating range by providing a physical stop (inner edge) that prevents the bracket from being pivoted beyond the useful position. This preliminary constraint counteracts the potential harmful action of over-tightening before it can occur, allowing the bracket to remain pivotable for ease of operation while eliminating the damage risk.
2Strength
If the bracket is designed to absorb high tensile forces without bending, then strength is improved, but manufacturing complexity increases due to costly connections
Solution Approach 1:
The bracket ends and the holder are merged into a single integrated component, eliminating the need for separate connection elements like welding or threading. This integration allows the bracket to absorb high tensile forces through its continuous wire structure while simplifying manufacturing by removing costly connection processes.
3Ease of manufacture
If the bracket is made from a continuous wire section, then manufacturing simplicity is improved, but resistance to bending forces decreases
Solution Approach 1:
The bracket is designed with locally optimized geometry where the wire diameter and cross-sectional area are increased at critical locations (near the holder and at the ends) to provide enhanced bending resistance exactly where needed, while maintaining the manufacturing simplicity of a continuous wire construction in non-critical areas.
Data Source
Figure 1~4
Figure 5~7
AI summary
To create a lashing eye (1) for the cargo area of a motor vehicle, comprising at least a holder (2) with an annular bracket (3) pivotable in the holder (2) from a non-use position to a use position, wherein the holder (2) has a section (4) encompassing the bracket (3) and the holder (2) and bracket (3) are arranged and fastened within a frame part (5) in the floor of the cargo area, wherein the bracket (3) serves to lash load securing elements on or to the loading surface, in which over-rotation of the bracket beyond the use position and any resulting damage to parts of the lashing eye or the cargo area lining is effectively prevented, it is proposed that the holder (2) has a recess (6) in its section (4) encompassing the bracket (3), within which a radially projecting projection (7a, 7b) on the bracket (3) is arranged or formed, wherein the projection (7a,7b) in the position of use, rests against an inner edge (8) of the recess (6).