IRON-KIDS K2 · R64

Redundant pin-state channels + remote-release study

R64 extends the R63 captive spring-biased cross-tier lock with two physically separated engaged-state channels, a third retracted-state diagnostic channel, explicit transit/fault-state logic, independent endpoint capture stops, and an outboard Bowden-style release-routing study.

Still an unpowered off-body bench fixture. Sensor bodies are reference envelopes and the inherited R61 rigid hangers still occupy the arm space.

Download the R64 model package

R64 redundant lock-state sensor channels and outboard remote-release study

independent engaged-state channels

retracted-state diagnostic channel

sampled pin positions classified

new modeled parts / references / gauges

Explicit state model

Retracted confirmedRear diagnostic channel active while both engaged channels are inactive.

Transit / faultNo endpoint channel active. Motion logic must not interpret this as a locked condition.

Engaged confirmedBoth physically separated engaged channels active together at the inserted endpoint.

Fault discrimination

Nominal CAD state map passed.

Both endpoint states resolve to their expected channel combinations.
A simulated 20 mm position error on sensor A creates an A/B disagreement instead of a false two-channel lock confirmation.
No nominal sampled position produced an A/B disagreement.
New fixed hardware clears all three proof brackets in their closed and spread endpoint states.

Open machine-readable R64 verification →

Outboard release direction

The R64 sensor pod and Bowden-style release anchor sit outside the measured bounding envelope of the 61-file inherited R61 bench scene. That moves sensing and the manual pull point outward, but does not solve the wearable carrier: the rigid R61 hangers still pass through the arm space.

Still left

Select actual redundant sensors and measure real switching repeatability/hysteresis.
Define fail-closed wiring diagnostics for open, short, stuck and disagreement states independent of the motion supervisor.
Select and bench-test the metal pin, compression spring and positive retraction system from measured forces.
Build the remote release with real cable/sheath and measure friction, backlash, bend radius and emergency pull force.
Replace the R61 rigid hangers with a body-clear carrier, then integrate all twelve bicep leaves and the red overlay.
Repeat continuous-motion, jam, service-removal and extraction testing using measured K2 body/padding geometry.