Building Braking Devices TRIZ Cases

An automated door closing mechanism replaces manual propping with a self-service driver and retainer system that holds the door open at a predetermined angle.

Inclined braking surfaces on hinge stop elements create a self-locking frictional connection that prevents springback after reaching the end position.

Right-hand and left-hand threads in a coupling device align drive components, eliminating deviations that cause premature failure.

Inclined surfaces on a pedestal guide engagement shafts into recesses, eliminating complex manual movements during hinge assembly.

Tilting bearing rollers self-align with cam surfaces to eliminate misalignment wear and improve efficiency.

Rotating the spring mechanism transversely reduces overall length, preserving door opening width while maintaining precise positioning.

Securing frame nests damper inside hinge arm to prevent leakage while enabling easy replacement.

Rotating an internal helical gear forces the adjuster rear against the frame, compensating for loose manufacturing tolerances in window channels.

Merging separate impact dampers into one unit reduces component count while maintaining consistent damping force across the full pivot range.

Counter-directional spring-damper elements in the door leaf absorb impact energy to prevent noise and damage from excessive momentum during closure.

An axially moving piston rod in a door hinge reduces sealing ring friction to prevent oil leakage while maintaining structural stability.

An electromotor-driven adjustment device modifies mechanical door closer parameters via a kinematics sensor, reducing maintenance time and false alarms.

Hydraulic motor pivots flush floor door to resolve aesthetic and accessibility trade-offs in multistory homes.

An extracted drive member resolves the contradiction between aesthetic shape and ease of installation by providing dedicated tool engagement surfaces.

An electronically controlled orifice transitions between flow states to manage tailgate speed, preventing structural damage from rapid movement.

Integrated hydraulic hinge merges damping and rotation into one unit, eliminating bulky floor-mounted closers.

Resilient clip arm engages tang to prevent accidental disengagement of the door operator housing.

Replacing fluid seals with a spring-loaded friction pad eliminates leakage and reduces maintenance while controlling door closure speed.

Overflow chamber accommodates thermal expansion to prevent leakage in storm doors.

Longitudinal carriage movement aligns the running gear with the door leaf fastening device, simplifying assembly of heavy glass panels.

Positioning the linear damper orthogonally to the shaft member reduces vertical size while maintaining sufficient pressing stroke and damping function.

A fluid damper with a movable piston and housing manages actuation arm movement in furniture drive devices.

An intumescent release element expands at elevated temperatures to open the housing, preventing electrochemical energy stores from overheating during a fire.

Tilted collision surface directs impact forces downward onto the guide rail while an elastic body absorbs shock energy.

Segmented rigid links in the tension member prevent chain entanglement and friction losses, enabling reliable operation at large opening angles.

Gears adjust the cylinder and stop positions in a damper, resolving conflicts between manufacturing simplicity and adaptability to varying furniture weights.

A vehicle door hinge check structure uses a clip member and bracket pin to retain the door in the fully open position.

Dynamic torque reduction in the power strut prevents tailgate twisting and ensures proper engagement of closing elements.

Master and auxiliary drive means operate independently under electronic control, preventing damage when one leaf stops while the other continues.

A furniture hinge uses a contact surface on the lever to act directly on the damper piston rod for movement control.

A hydraulic rotation damper converts rotational motion into translational movement using a helical piston within a sealed cylinder.

A blocking device holds the active leaf in a compact waiting position using clamping plates and release levers.

Hydraulic module generates directional damping forces to prevent collisions while maintaining fast pivotal movement speed.

A hydraulic door actuator uses a hybrid piston assembly to eliminate backlash and prevent sudden door slamming under external forces.

Retaining clip uses step-up gear to amplify actuating arm pivoting speed into rapid shaft rotation for immediate braking engagement.

An adjustable friction brake on the brake pulley controls closing speed, preventing sudden impacts while maintaining autonomous spring-driven operation.

A closing sequence control device coordinates a sliding leaf and a rotary leaf for variable width openings.

An electromechanical driver transitions a clutch between coupling and decoupling states to control relative pivoting of the first and second arms.

A furniture hinge integrates a hydraulic damper with a switching element to deactivate damping forces via piston rod movement.

A Chicago barrel bolt doorstop assembly uses a threaded post and fastener to mount securely between door sides.

Curved spring guides reduce peak opening forces by varying lever arms, eliminating steep linear spring characteristics.

A gas piston biasing member moves a door engagement member along a defined path, absorbing impact energy to prevent noise and damage during abrupt closure.

Segmented driver element with pivot joint reduces mechanical play between components, ensuring smooth door operation.

A rail-mounted bracket with a hook receiver engages a swing arm hook to maintain door closure under load.

Segmenting elastic torque from viscous damping resolves complexity issues while ensuring smooth appliance door operation.

A linear decelerating device mounted on a fixed hinge part uses an actuating member to resist closing movement.

A sliding door locking system uses floor pins and receiving channels to secure doors in modular wall assemblies.

A monolithic plastic piston body eliminates machining and coating steps to reduce manufacturing costs.

A braking device uses a radial tensioning wrap spring to apply friction force within specific portions of a displacement path.

A hinge integrates a damping element between two four-bar linkages to control door movement.