Dual Coil Torsion Spring For Automotive Interior Components

Core Features

Dual Coil Configuration – Two coiled spring bodies are connected by a center section, with the coils arranged to provide torque capacity compared to single torsion springs of equivalent dimensions. The coils work in a parallel arrangement to generate the required rotational force.

Bi-Directional Loading Capability – The spring can be twisted in both directions from the neutral position, supporting applications requiring both positive torque for actuation and reactive torque for controlled deceleration.

Precision Force Control – The dual-coil design enables torque adjustment through modifications to wire diameter, coil diameter, and number of windings, allowing the spring to be tuned for specific load requirements.

Automotive Interior Application – Designed for automotive interior mechanisms requiring reliable performance under repeated load cycles and defined environmental conditions.

Product Characteristics

The spring is manufactured with two coiled spring bodies connected by a center section. The coil diameters and wire thickness are dimensioned to provide specified torque characteristics. The dual-coil configuration allows the spring to deliver torque capacity compared to single torsion spring designs.

Material composition is controlled to meet specified strength and fatigue resistance requirements. Spring steel grades are available for general applications, with stainless steel options for corrosion-resistant requirements. The spring rate can be customized within a defined range based on application requirements.

Surface treatment options include zinc plating for corrosion resistance, phosphate coating for lubricant retention, and other finishes based on environmental exposure conditions. The spring may be guided on a shaft pin during operation, with clearance maintained between the inner diameter and the shaft.

Application Scenarios

Automotive Interior Mechanisms – Used in glove box doors, armrests, and console compartments where the spring provides rotational force for opening and closing functions.
Seat Adjustment Systems – Applied in seat cushion mechanisms where the spring provides urging force for seat positioning and return functions.
Interior Hinge Assemblies – Employed in automotive interior hinge applications requiring controlled rotational movement and return force.
Storage Compartment Systems – Used in vehicle storage compartments and access panels where the spring provides consistent opening and closing force.

Customization Options

Specifications and configurations can be adjusted based on application requirements. Coil diameters, wire thickness, number of windings, and spring rate are customizable according to application geometry. Material grades include spring steel for general applications and stainless steel for corrosion-resistant requirements. Surface treatments are selectable according to environmental exposure conditions, including zinc plating, phosphate coating, and other finishes.

Frequently Asked Questions

Q: What is the difference between a dual coil torsion spring and a single torsion spring?
A: A dual coil torsion spring consists of two coiled spring bodies connected by a center section. The coils work in parallel to provide torque capacity compared to a single torsion spring of equivalent dimensions.

Q: What is the temperature range for these torsion springs?
A: The operating temperature range depends on material selection. Standard spring steel grades operate within defined temperature ranges, while stainless steel grades can extend the range for extreme climate applications.

Q: Can these springs be supplied in non-standard dimensions?
A: Custom wire diameters, coil diameters, and number of windings can be manufactured upon request, subject to tooling availability and minimum order quantity requirements.

Q: What is the recommended installation method for these springs?
A: The spring is guided on a shaft pin or similar mounting point, with clearance between the inner diameter and the shaft. The center section is fixed while the coil ends attach to the components requiring rotational force.

Q: What surface treatments are available?
A: Surface treatments include zinc plating, phosphate coating, and other finishes based on corrosion resistance requirements and environmental exposure conditions.

Installation Considerations

The spring should be installed with the center section fixed to the stationary component and the coil ends attached to the moving component. The spring should be guided on a shaft pin with clearance between the inner diameter and the shaft. The dual coils work together to provide balanced torque output. For applications requiring specified torque values, the spring should be installed at the defined preload position. The spring should not be wound backwards, as this may reduce performance and fatigue life. Thread condition of mounting points should be inspected before installation. For plated or coated springs, coating thickness should be within specified tolerances to maintain fit with mating components. When used in applications involving frequent cycling, the spring material and design should be evaluated against fatigue life requirements.