Contact Surface Shape/Structure TRIZ Cases

Staggered step surfaces in an HVDC relay block arc spatter from clearance gaps, raising creepage distance and insulation resistance.

A flexible conductive link keeps current flowing when switch contacts separate under vibration, preventing arcs and circuit damage.

Non-rectangular blade cross sections raise rigidity without added connectors, preserving contact pressure and limiting arc risk under high current.

A connection restriction unit blocks conflicting series and parallel contact states to prevent short circuits from deformation or misalignment.

Complementary protrusions and depressions stabilize switch contacts during high current surges, reducing noise, vibration, and surface wear.

A soft and hard projection pair enables overtravel and tactile feedback while reducing projection wear in a pressing switch unit.

Multiple moveable contact elements create stable four-point electrical contact, raising tap changer current capacity and switching reliability.

A flanged rivet contact caulked into a terminal counterbore improves adhesion and heat dissipation in high-capacity relay contacts.

Multiple groove-edge contact points on non-linear mating surfaces penetrate contaminants and keep relay or contactor connections stable.

Recessed contact zones and sacrificial areas divert arcs from primary contacts, lowering wear and preserving low contact resistance.

A recessed multilayer conductive pattern with insulating-layer openings improves connection reliability while reducing protrusion-related stress.

A magnet and overlapping contact layout reorients arc growth against magnetic flux, increasing Lorentz force for faster relay arc extinction.

A pyrotechnic contact bridge pierces mating contacts to create a stable high-current short circuit for fuel cells without external holding energy.

A hook-shaped stationary contact uses opposing current flow to drive arcs into the extinguishing chamber and reduce contact ablation.

Extended supports on the central fixed contact increase resin anchoring during insert molding, improving fixation while limiting deformation and pin traces.

A three-circle land electrode pattern maintains switch contact when conductive members shift, supporting both rubber and dome contacts.

A comb-drive MEMS switch moves the beam orthogonally to electrostatic force to improve RF isolation, ohmic contact, and packaging flexibility.

Spring-loaded pogo pins replace bulky switch parts to save space, reduce wear, and add redundant electrical contacts.

A fork-type double middle contact extends air gaps in a compact three-position disconnector switch, improving dielectric insulation without added size.

Staggered step surfaces in an HVDC relay ceramic cover block arc spatter from fitting clearances, raising insulation resistance and creepage distance.

A dual-permanent-magnet layout strengthens the arc starting point field in HVDC relays, speeding arc extinguishing under large loads.

An integrated heating element and mating connectors keep a garage door seal from freezing to the floor while limiting energy use.

An integral yoke-drive shaft assembly generates opposing magnetic force to prevent contact separation and arcing at high current.

Separating fastening strength from electrical conduction cuts contactor weight and cost while improving connection stability under thermal expansion.

A conductive bypass link keeps current flowing when vibration separates switch contacts, preventing arcing and protecting tools and circuits.

Magnetically rotated interdigitated conductors prevent contact bounce under vibration, improving power connection reliability in compact contactors.

By integrating a heat sink into the tulip contact ring nut, this circuit breaker dissipates heat at the source and improves thermal stability.

A recessed fixed contact and sacrificial movable surface steer DC switching arcs away from primary contact regions to preserve resistance and service life.

Thin metal sections stay joined by a web and fold into a layered contact carrier, avoiding burrs while improving accuracy and conductivity.

A magnetic shroud adds holding force in a high-power contactor to limit contact separation, arcing, vibration, and oxidation.

Opposed movable contact portions and an isolator create over 350° clearance to stop arc transfer and ensure a non-conducting OFF-state.

Self-heated shape-memory alloy actuators switch metallic contacts without holding current, cutting power loss while maintaining stable circuit states.

Grooved petal contacts cut momentum while concentrating current at arcing surfaces to reduce fracture and improve interruption life.

A machined fixed contact and sliding terminal action remove oxide layers, cut parts, and improve snap-switch conduction reliability.

A rotary movable contact assembly removes flexible links to cut disconnection resistance, switch size, and driving force.

A PCB with interdigitated contacts and graphite coating cuts wiring and oxidation risk in contact-sensitive electrical safety switching.

A fork-type double middle contact lets the piston keep longer air gaps for better dielectric insulation without increasing switch length.

A strip-like spring contact deforms to shed ice, snow, and dirt, maintaining low-loss electrical contact in isolating switches.

A separated fastening element and conductive contact path reduce weight, space, and material cost in high-voltage switching connections.

A serpentine conductive circuit in the keypad membrane detects probe intrusion before processor access, helping protect POS payment data.

Protrusions on electrical terminals increase mating surface area with stranded conductors to enhance thermal conductivity.

Flexible shell domes and interlocking components seal edge-mounted switches against contamination while maintaining tactile feedback alignment.

A multi-directional switch device uses distinct rubber contacts to generate a clear tactile click while ensuring reliable sequential activation.