Mechanical Apparatus TRIZ Cases

See how a control device adjusts the number of operating ventilation units based on maximum CO2

UV light inside a vehicle recirculation filter kills airborne microbes while venting ozone and gaseous effluence to protect cabin air quality.

See how a bypass branch and mode-switching control prevent evaporator over-drying and system sh

See how a Christmas tree-shaped clip element secures plastic actuator housing to metal valve ho

See how a single logic board uses switchable resistors and VSD size detection to handle multipl

A coupled dual-throttle floor air outlet keeps discharge velocity stable across ventilation levels while damping outlet noise.

See how frequency conversion control adjusts compressor load ratios dynamically to reduce start

See how dynamic ventilation output adjustment using real-time air parameter feedback resolves t

See how a granular porous medium absorbs UV radiation through accumulated reflections while all

An angled, widening guide pipe slows and redirects inlet cold water along the tank base to keep it separated from stored hot water.

See how a degassing valve reduces receiver pressure below critical threshold to prevent CO₂ ref

See how suction-side and liquid-side property trend analysis detects fan, blower, and blockage

See how an annular UV-C light bulb attached to vehicle air vents uses ultraviolet radiation to

See how a modular enclosure uses vertically spaced ceiling layers and decoupling elements to ac

See how a photocatalytic filter paired with an adjustable LED light source decomposes air pollu

See how pulse width modulation of anode current extends sacrificial anode life in high-conducti

See how integrated bacteria filtering and UV sterilization inactivate respiratory droplets duri

High-velocity cleaning solution and vacuum return clear deep coil fins and biofilm, restoring HVAC efficiency without damaging coils.

See how adaptive frequency rising rate and real-time parameter detection prevent liquid compres

See how segmented spring pockets enable zone-specific firmness adjustment while blocking vibrat

See how a bypass line and control valve enable CO₂ refrigeration systems to avoid ejector low-p

See how a segmented evaporator coil with valve-controlled refrigerant flow enables selective de

See how a thermostat calculates temperature rate of change and applies compensation to reduce o

Model-based HVAC control targets vent temperature, airflow, and humidity to match occupant comfort while reducing energy use.

See how interconnected HVAC controllers detect refrigerant leaks and activate circulation fans

See how segmented emission and collection assemblies with a detachable protective cover enable

See how temperature-based feedback control adjusts expansion valve operation to maintain optima

See how dual heat insulating chambers with intermediary fluid isolate the heating core from wat

See how rotatable inlet grills and individually removable filters simplify ceiling air conditio

See how sensor-based air quality monitoring generates productivity scores to predict occupant p

Angled channels and spacers extend sorbent contact time while containing the MTZ and lowering pressure drop in HVAC gas filtration.

See how a segmented water tank with rigid upper and lower sections and a flexible middle sectio

Filters, UV-C treatment, and a lower tank layout let an ultrasonic humidifier use tap water while limiting mineral and pathogen aerosolization.

See how an aeroponic system uses plant roots and rhizospheric bacteria to remove VOCs, SOx, and

See how fan motor command voltage and operation time thresholds distinguish foreign matter clog

See how triple expansion devices control refrigerant pressure and gas-liquid interface shape to

See how a bypass line and control valve enable CO₂ refrigeration to switch modes at low ambient

Solid amine adsorption and desorption beds provide local CO2 supply for greenhouses while avoiding transport footprint and radius limits.

See how a rotatable filter body with discharge and wetting buckets enables automatic cleaning w

A sloped receptacle and brief pump shutdown let overflow carry off floating contaminants, improving cattle shed air treatment without extra hardware.

See how a test signal output unit enables comprehensive inspection of the leakage notifying cir

See how grid-based space segmentation and dynamic occupancy placement balance infection risk, s

See how dynamic return air fan and damper control uses calculated stack effect pressures to opt

See how introducing gas-phase refrigerant to a flash tank simplifies dryness control, eliminati

See how segmented filter modules with replaceable pre-filter, electrostatic, carbon, and cataly

See how a flue-coupled reference sensor isolates ambient air to establish a stable baseline, en

See how time-threshold monitoring and microphone-based acoustic signature analysis enable HVAC

See how recessed COB light boards in wavy grilles reduce air resistance and dust accumulation f

A decorative light uses a motor-driven rotating lens module to project dynamic patterns alongside static images.

Elevator frame elevates translucent panel above T-bar grid to eliminate shadows and enable non-rectangular trompe-l'oeil skylight installation.

A portable lighting system uses a traveler mechanism to expand flexible ribs for single-handed setup.

Parallel channels in a thin film provide discrete reflective interfaces that expand the angular range of incidence while reducing material absorption.

Varying the liquid crystal layer thickness mitigates color unevenness and reduces production costs by eliminating additional control layers.

A bicycle handle assembly uses a movable retaining member and locking element to grip the handlebar securely within a closed structure.

Groove structures on main surfaces reflect coupled light to mix emissions from multiple LEDs, eliminating color fringes in lighting arrangements.

An NB-IoT street lamp control device monitors electrical parameters and adjusts lighting intensity via MCU-driven switching signals.

Elongated slots and torsion spring brackets allow toolless installation and post-mounting rotation, eliminating the need for multiple specialized SKUs.

A backlight source module places a rubber member on one side plate to stabilize the structure.

Segmented edge-lit panels orient independently to provide uniform illumination while reducing installation complexity.

A paper fiber diffusion sheet with protective layers provides uniform light transmission.

Integrates a rotatable valve directly with the nozzle discharge tube to streamline liquid flow paths and reduce hydraulic resistance.

A holographic head-up display panel moves between operational and parked positions via a guide device, reducing installation space complexity.

A variable index light extraction layer uses microreplicated posts with distinct refractive indices to extract supercritical light.

Segmented lightguide sections with angled redirecting features distribute light from a single source, eliminating complex multi-LED assembly.

A backlight module uses integrated backplane support parts to hold an optical film, creating a simplified structure without a middle frame or light guide plate.

An integrated optical sheet module merges diffusion and polarizing functions into a single structure to reduce backlight unit thickness.

A surface mount light base assembly accepts interchangeable diffusers via mechanical attachment members.

Asymmetric tilted surfaces on transparent protruding portions manage light distribution via total internal reflection, eliminating external secondary lenses.

Dual prism sheets redirect light paths to adjust viewing angles, avoiding guest-host liquid crystal cells that increase device thickness and power consumption.

A lightguide display system uses reflective layers to extract light and produce three-dimensional stacked images.

Concentric surface protrusions on a lightguide plate improve luminance uniformity while reducing module thickness.

A composite AAO and fluoropolymer structure enables low-loss ultraviolet propagation while maintaining stability under high optical powers.

Switching between non-collimated and transparent backlight modules reduces wide-angle brightness, resolving privacy trade-offs in electronic devices.

A light guiding nameplate routes illumination from an internal source to an external surface.

A top sheet foot extends into a light guide plate groove to stabilize optical sheets.

Ultrasonic welding secures flexible outer skin edges in a cover fixing groove, eliminating manual stitching labor and reducing manufacturing complexity.

Grippers stretch optical fibers along the axis during adhesive curing to lock pitch and prevent variation in the final assembly.

Rear-surface engraving on the panel body replaces laser processing, eliminating surface defects while enabling complex three-dimensional lighting patterns.

Ratchets rotate LED modules in a frame to direct light, eliminating dispersed glare and reducing power consumption.

Segmented light guide areas with varying widths suppress light leakage from color filters, improving backlight brightness while reducing power consumption.

A liquid crystal diffraction element uses an optically-anisotropic layer with a continuously rotating optical axis to control light emission.

Frustum and plano-convex structures on a light guide plate achieve collimated beams without increasing module thickness or reducing brightness.

Integrating force and self-capacitance electrodes on one substrate eliminates external layers, reducing terminal weight while maintaining accurate detection.

Video displays simulate realistic water behavior while embedded optical guides direct self-propelled objects across the simulated surface.

Expandable pulleys collapse and expand to eliminate slack, reducing response lag in robotic medical instruments.

An outer frame sub-frame design accommodates liquid crystal module edges within integrated grooves to simplify assembly.

Molded lens redirects LED light through a trim opening to resolve non-uniform intensity in airbag covers.

Circular light deflection structures guide illumination through precise geometric spacing, reducing visibility of unlit components while maintaining luminance.

A supporting member surrounds the cover bottom and extends into the cavity to hold the liquid crystal display panel.

A curved light guide system converts non-parallel image beams into parallel light using integrated reflection surfaces.

A foldable steering assembly transitions a compact electric transport device between stowed and riding configurations using a pivoting handlebar.

Cyclic carbonate compounds in aliphatic polycarbonate resolve the heat resistance versus light transmittance contradiction for optical components.

Inverting fabrication to form vertical gratings then tilting them improves angle control and reduces surface roughness.

A second lens condenses back-traveling light onto a sensor, eliminating beam splitters to reduce manufacturing costs while maintaining detection accuracy.

Segmented light guide panels with optical patterns enable local dimming, reducing heat generation and power consumption while improving image clarity.

A quantum dot backlight module uses a colloid layer to bond the light source and quantum dot layer closely.

Replacing adhesive with a gas layer creates total internal reflection, preventing light leakage and improving visibility in ambient light.