Electromagnetic Relay Details TRIZ Cases

A three-branch magnetic circuit replaces spring preload to simplify low-voltage actuation and improve temperature-stable operation.

A split movable carrier separates main and auxiliary conductors to simplify coil access, improve insulation, and strengthen switching connections.

A notch moved into the second yoke side portion preserves yoke contact area, improving magnetic efficiency while easing coil terminal routing.

A protrusion-and-recess magnetic pole structure boosts initial relay attraction while cutting coil power and size in high-voltage DC relays.

Built-in current sensing and electromagnetic disconnection let this contactor cut power during over-current faults with simpler wiring.

A ferromagnetic locking element closes a yoke gap during unlocking, preventing accidental contact closure without high spring force or complex locking parts.

A sandwiched cooling member and heat transfer paste draw relay and fuse Joule heat through mounting walls to keep the junction box compact and stable.

A PTC thermistor between the power source and relay socket limits overcurrent from incorrect relay insertion, protecting coils and PCB traces.

Dual magnetic loops strengthen contact hold under short-circuit current while separating arc-extinction magnets to avoid contact bounce.

Dual cooling members and a conductive housing wall route relay and busbar Joule heat outward to improve junction box reliability.

Parallel current in overlapping bars creates attractive Lorentz force that prevents contact tip separation and arcing at high current.

A three-contact planar bridge with independent spring support maintains secure alignment, lowering resistance, heat, and wear in relays and contactors.

Guide grooves, complementary elements, and securing sleeves create a force-locking housing that improves assembly stability under torsion and high electrical loads.

Magnetizers and a connector stabilize relay contacts against short-circuit repulsion, preventing bounce, burning, and assembly issues.

Overlapping upper and lower yokes create magnetic attraction that offsets repulsive force, stabilizing contact and suppressing vibration.

Upper and lower yokes create magnetic attraction that offsets repulsive force, stabilizing contact and reducing movement force.

A surrounding support member and movable spring stabilize the movable contact, suppress vibration, and improve contact reliability with simpler assembly.

A standardized relay contact spring uses housing-set biasing force to deliver different switching characteristics while cutting part variety and storage cost.

Complementary mounting and slot guides align the housing to within 0.2 mm while improving assembly stability and electrical connection security.

Dual coils accelerate and decelerate the relay armature to cut transfer time, reduce contact bounce, and limit wear in power switching.

Composite horizontal and longitudinal magnet fields strengthen the arc starting point in high-voltage DC relays for faster arc extinction.

Rectification, fixed-voltage regulation, and comparison stabilize AC relay switching thresholds, reducing hysteresis and unwanted switching.

A bistable solenoid switching module adds remote digital breaker control while avoiding contactor damage during short-circuit faults.

Rigid busbars pull heat away from relay contacts and into connected wires, helping enclosed load-tray relays avoid overheating.

A V-shaped relay contact assembly with a wider middle section resists electro-dynamic deformation and stabilizes contact pressure under short-circuit current.

Barrier walls in the magnetic frame hold Halbach array blocks in place, enabling precise gaps, lower assembly cost, and longer relay life.

A wall and card protrusion increase insulation distance between the armature and movable contact piece without enlarging the relay.

Intermittent Hall sensing cuts remote switch power draw while improving state detection and adding reverse-polarity and ESD protection.

A fragile pipe-lead section absorbs thermal expansion and confines deformation, protecting the insulating seal and maintaining airtightness.

Arcuate latch guidance extends movable core travel, prevents frame collisions, and improves magnetic contactor switching reliability.

Separate upper and lower ferromagnetic yokes prevent contact levitation during short-circuit current while keeping relay switching fast.

Magnetic latching and low-resistance contacts let this MEMS power relay switch high currents with less heat and no bulky heat sinks.

Arc contacts engage before carry contacts and work with an external fuse to divert arcing, reduce contact damage, and prevent over-pressure.

A shared shaft and mounting frame let one HV DC contactor support NO and NC auxiliary contacts while reducing size, parts, and assembly difficulty.

A wedge-locking contact bridge resists electromagnetic repulsion to prevent contact levitation and arcing under high transient currents.

Arc contacts engage before carry contacts while an external replaceable fuse dissipates fault energy, enabling compact high-current switching.

A thinned lead-out section and base positioning ribs reduce thickness variation, improving relay clamping accuracy and assembly consistency.

A roughened armature surface and embedded plastic swing tabs increase relay armature bonding strength after molding and high-temperature baking.

A wedge-locked contact bridge maintains closure under high current, limiting electromagnetic levitation and arcing without enlarging the contactor.

An elastic arm between relay swing members tunes contact gaps while reducing friction, shavings, arc risk, and wear.

An adsorbent placed away from relay contact points absorbs and desorbs moisture to suppress condensation and maintain contact conductivity.

A high-conductivity heat transfer member balances relay temperatures to prevent dew condensation and contact freezing in cold vehicles.

A rotatable adjustment nut sets arc gaps across multiple auxiliary switches without shims or contact bending, cutting rework in contactor assembly.

Staggered dual contacts pair silver-tin and silver-nickel materials to handle inrush current while reducing heat, wear, and welding risk.

A card-driven contact layout removes the separate return spring, simplifying relay structure while improving contact reliability and arc separation.

Staggered dual contacts pair silver-tin and silver-nickel materials to handle inrush current while reducing heat and contact wear.

Segmented magnetic conduction blocks keep the relay air gap stable during over-stroke, preserving magnetic attraction and anti-short circuit performance.

Longitudinal and transverse limit structures correct molding misalignment, relieving shaft stress and stabilizing relay armature overlap.

Protruding bobbin retaining walls constrain static spring contacts, extend creepage distance, and avoid welding-slag relay failures.

A movable iron core varies magnetic force through upper and lower assemblies to prevent relay switch magnetization, deformation, and fatigue.

A corrugated rigid gasket buffers driving rod impact on the yoke plate, cutting relay noise while improving fatigue resistance.

A partial-height magnet and rear return element shrink the trip unit while preserving magnetic flux paths and pallet stability.

An offset non-magnetic pivot and single-piece armature shrink the trip unit while preserving torque stability, sensitivity, and assembly efficiency.

Stepped auxiliary contact placement increases isolation from main contacts, preventing voltage breakdown and improving relay state detection stability.

A phase change thermal absorber pulls heat from fixed contacts to limit transient temperature spikes without adding bulky contactor mass.

A magnetic reinforcing member boosts flux between relay magnets to improve arc extinguishing and movable-core driving force without larger magnets.

A dynamic air gap, overtravel spring, and fusing-tip let this contactor interrupt short-circuit currents without separate fuses.

A flexible deformation portion around the relay housing snap absorbs assembly stress, reducing cracking at weak clamping points and improving stability.

Voltage fluctuation sensing re-energizes a contactor pull-in coil only during bounce events, reducing arcing, transients, and coil heating.

A non-linear return spring lowers initial activation energy while preserving strong contact separation in a magnetic switch.

Distributed vent pathways in the arc shield, shaft assembly, and core speed evacuation and limit oxidation-driven contact resistance.

A coil-driven rotor opens the commutation switch fast enough to shift fault current to the bypass path before let-through current damages semiconductors.

Dual elastic members add contact pressure only in the closed state, helping contactors resist short-circuit separation with less complexity.

An integral torsion spring balances force on both sides of the movable contact, simplifying installation and reducing three-phase asynchrony.

A fixed and sliding crossbar arrangement keeps shooter contact stable during trip adjustment, reducing jamming and phase interference.

Different armature lever lengths let one coil drive separate contact sets with distinct gaps and forces, improving relay control and reliability.

Paired bending contact pieces raise relay contact pressure under short-circuit current while still allowing reliable disconnection.

A movable magnetizer adjusts magnetic attraction with current to resist relay contact bounce during short circuits without enlarging the coil.

An adjustable magnetizer spacing boosts relay short-circuit holding force while preserving timely overload breaking in a compact DC relay.

A multi-voltage rectifier and PWM current control let one solenoid circuit handle AC or DC inputs while cutting heat, energy use, and model variation.

A movable magnetizer adjusts magnetic force with current, helping DC relays resist short circuits while still breaking quickly.

Upper and lower magnetizers create independent magnetic loops that boost contact pressure, extinguish arcs, and resist short-circuit repulsion.

A segmented shaft with a stepped pressing surface distributes force from the return spring to the movable core without welding.

A yoke extension projects beyond the stator contact face to form a low-resistance magnetic path that stabilizes attractive force in electromagnetic relays.