Hose Clamp

A torsion spring is a mechanical component that stores and releases energy through elastic deformation, primarily generating torque by twisting (rotating) around an axis. Here’s a detailed overview:

1. Working Principle

• When one end of the spring is fixed and the other is twisted by an external force, the spring coil (usually helical) deforms elastically, storing mechanical energy.
• Upon removing the force, the spring returns to its original shape due to material elasticity, releasing torque.

2. Key Features

• Motion Type: Rotates around an axis (unlike linear compression or extension).
• Torque-Angle Relationship: Torque is proportional to the twist angle (Hooke’s Law: T = k \thetaT=kθ, where TT is torque, kk is torsional stiffness, and \thetaθ is the angle of twist).
• Self-Returning: Most torsion springs automatically return to their initial position.

3. Common Types

• Helical Torsion Spring: The most common type, with coils rotating around a central axis (e.g., clamps, door hinges).
• Double Torsion Spring: Combines two sets of coils with opposite winding directions for higher torque.
• Linear Torsion Spring: Combines twisting and linear motion (e.g., garage door balancing systems).
• Flat Spiral Spring: Made of flat metal strips (e.g., clock mainsprings).

4. Key Design Parameters

• Material: Typically high-carbon steel, stainless steel, or music wire, requiring high elastic limits and fatigue resistance.
• Coil Dimensions: Inner diameter (ID), outer diameter (OD), and wire diameter (d).
• Torsional Stiffness (k): Torque per unit angle (N·mm/° or N·m/rad).
• Maximum Twist Angle: Safe deformation limit; exceeding it causes permanent deformation.
• Winding Direction: Left-hand or right-hand, must match installation orientation.

5. Applications

• Household Items: Clothespins, mousetraps, door latch return springs.
• Industrial Equipment: Valve switches, robotic arm joints, clutches.
• Automotive: Wiper blade return mechanisms, seat adjusters.
• Electronics: Flip phone hinges, laptop screen supports.

6. Selection & Considerations

• Load Calculation: Choose stiffness (k) based on required torque and twist angle.
• Fatigue Life: For high-frequency use, select durable materials (e.g., stainless steel over plain steel).
• Installation: Ensure secure anchoring to avoid stress concentration.
• Lubrication & Corrosion Protection: Coatings (e.g., zinc plating, oil) for humid environments.

7. Common Issues

• Permanent Deformation: Caused by overloading or repeated twisting; requires redesign.
• Noise: Due to friction; lubrication can help.
• Fracture: Material defects or exceeding fatigue limits; upgrade to higher-strength materials.

Shuangyuan produce various tension spring with wire diameter from 0.03-16mm

 

Product Description & Basic Specifications:

1. Factory manufacture & directly supply.
2. Material: SUS301/304 optional
3. Wire diameter: 0.7mm ~ 1.8mm
4. Inner Diameter: 3.5mm ~ 22mm

 

Below are some ordinary sizes:

MODEL	SPEC	Single or Double
SY – DWHC01	0.7*3.5	D
SY – DWHC02	0.8*5.2	D
SY – DWHC03	0.8*5.6	D
SY – DWHC04	0.8*5.7	D
SY – DWHC05	0.8*5.9	D
SY – DWHC06	0.8*6.0	D
SY – DWHC07	0.8*7.0	D
SY – DWHC08	0.9*5.5	D
SY – DWHC09	0.9*6.6	D
SY – DWHC10	1.0*6.7	D
SY – DWHC11	1.0*7.35	D
SY – DWHC12	1.0*8.35	D
SY – DWHC13	1.0*8.5	D
SY – DWHC14	1.0*9.7	D
SY – DWHC15	1.2*14.5	D
SY – DWHC16	1.4*12.4	D
SY – DWHC17	1.6*14.4	D
SY – DWHC18	1.6*18.7	D
SY – DWHC19	1.8*22	D