Product Definition & Engineering
While colloquially known as a "Steering Wheel Spring," this component is technically defined as a Clock Spring, Spiral Cable, or Rotary Electrical Connector. It is the non-negotiable safety link in modern automotive chassis systems.
At Jiaxing Richang Auto Parts, we move beyond basic connectivity. We engineer high-endurance Flexible Flat Cable (FFC) solutions that facilitate the continuous transmission of power and data between the static steering column and the dynamic steering wheel. With a monthly production capacity of 2.8 million sets and fully automated punching/printing lines, we are the supply partner of choice for global OEMs including BYD, SAIC GM Wuling, and Volvo.
Core Functionality: The Critical Safety Link
The "spring" mechanism inside our housing is actually a precisely wound ribbon cable designed to extend and retract without fatigue. It manages three critical signal paths:
SRS Airbag Circuit: The primary life-saving connection. We utilize Japanese Kikusui insulation testers to ensure zero resistance spikes, guaranteeing instant airbag deployment.
ADAS & Control Data: Supporting Cruise Control (ACC), Lane Keep Assist, and Audio functions.
High-Current Loads: Specialized tracks for Horn activation and Steering Wheel Heating, designed to prevent thermal buildup.
Manufacturing Advantages
1. Validated Safety (GP10 Certified)
Your safety systems are only as good as the lab that tests them. Our in-house laboratory achieved SGMW (SAIC GM Wuling) GP10 certification in July 2016. We rigorously test every "spring" design against industry standards for tensile strength, insulation resistance, and short-circuit protection.
2. Extreme Durability Engineering
A steering wheel spring must outlast the vehicle. We verify this using 4 specialized SRC Rotary Durability Testers and FFC Bending Durability machines. Our components are subjected to:
- Millions of rotation cycles (Lock-to-Lock).
- Three-Comprehensive Vibration Systems to simulate rough road conditions.
- High-Low Temperature Shock (-40°C to +85°C) to ensure FFC flexibility in all climates.
3. Versatile Configurations (U-Type & Roller-Type)
We accommodate diverse vehicle architectures:
- U-Type: Compact designs for passenger vehicles like the Baojun 530 or Chery series.
- Roller-Type: Heavy-duty guided mechanisms for commercial trucks (e.g., Dongfeng Tianlong, Sany), capable of handling rotation angles up to ±4.8 turns.
4. Signal Integrity for Smart Cockpits
Modern "springs" must carry digital data. By controlling the lamination and punching process internally (11 automated sets), we maintain strict conductor spacing. This prevents signal interference (crosstalk) in complex 26-channel hubs used in premium SUVs.
Application Sectors
Our steering wheel springs are currently integrated into millions of vehicles worldwide:
New Energy Vehicles (NEV)
Neta (Hozon), Aion, and BYD rely on our components for regenerative braking controls and digital interfaces.
Commercial Fleets
Robust solutions for Volvo, Renault, and Shaanxi Automobile, designed to minimize downtime.
Light Commercial
Durable fitments for JMC Ford Transit and Foton logistics vehicles.
Passenger Cars
Mass-market reliability for Geely, Chery, and Wuling.
Technical FAQ
Q1: Why is the "Steering Wheel Spring" typically called a Clock Spring?
A1: The term "Clock Spring" comes from the component's internal appearance, which resembles the wound mainspring of an old mechanical clock. In engineering terms, we refer to it as a Spiral Cable or Rotary Connector.
Q2: What causes a steering wheel spring to fail?
A2: While our products are tested for high durability, aftermarket or inferior springs often fail due to ribbon cable fatigue (breaking the circuit) or dust intrusion. We mitigate this using Composite Salt Spray and Dust Test Chambers during the validation phase.
Q3: Can your springs handle steering wheel heating?
A3: Yes. Standard signal tracks cannot handle the amperage of heating elements. We manufacture specific SKUs (e.g., for GAC Trumpchi) with reinforced copper tracks specifically to support heating functions without melting the insulation.
Q4: Do you offer custom pin-outs and channel counts?
A4: Absolutely. Our tooling capabilities allow us to produce simple 2-channel airbag connectors up to complex 26-channel multi-function hubs for intelligent vehicles.
Q5: Is it safe to drive with a broken steering wheel spring?
A5: No. A broken spring breaks the connection to the driver's airbag. In the event of an accident, the airbag will not deploy. Immediate replacement with an OEM-quality component is required for safety compliance.
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