Umbrella metal part
Windproof Spring Joint
Overview
- Made by
- In-house or supply chain
- Materials
- Spring steel, Carbon steel, POM bushing / washer
- Finish options
- Zinc plating, Black electrophoresis, Nickel plating
Manufacturing process & quality control points
- 1
Joint plates are stamped and formed; the geometry sets how far a rib can invert before springing back.
Quality control points
- Profile & hole pitch · Gauge / template · First article + hourly
- 2
Spring forming
In-house or supply chainSmall torsion or compression spring formed to the joint force spec.
Quality control points
- Spring force · Spring tester · 5 pcs per batch
- 3
POM bushing or washer moulded to stop metal-on-metal wear that would otherwise strip the plating.
Quality control points
- Dimension · Caliper / gauge · First article + 1 pc per 2 h
- 4
Plates, spring and bushing are riveted together; rivet tightness must allow movement without play.
Quality control points
- Joint play · Manual check, no axial play, smooth movement · 100%
- Rivet tightness · Visual + pull probe · 5 pcs per batch
- 5
Rib is forced to invert and must spring back without breakage or permanent set.
Quality control points
- Inversion recovery · Force inversion, release, rib returns to shape with no breakage · 5 pcs per batch
- Wind resistance · Fan / wind tunnel at agreed speed, no inversion damage · Per order
Used in
Relevant compliance
- EU REACH (SVHC)
EU
All metal & plastic parts, electroplated components and fabric coatings
- California Proposition 65
US
All products sold into California containing listed chemicals
Get a quote for Windproof Spring Joint
Custom materials, finishes and logos available. Send your drawing or sample.