Why Choose the Derui Touchscreen Headset Clamping Force Testing Machine?Are comfort complaints costing you customers?In the world of personal audio, sound quality gets the reviews, but comfort determi ...
Are comfort complaints costing you customers?
In the world of personal audio, sound quality gets the reviews, but comfort determines the returns. A headphone that sounds amazing but feels like a vise after 30 minutes will never earn customer loyalty. The clamping force—the pressure your headband exerts on the user's head—is the single most important factor in long-term wearability. Too tight, and you cause listener fatigue and headaches. Too loose, and you compromise acoustic seal and bass response.
Relying on subjective "wear tests" or basic spring scales is no longer sufficient for premium audio brands. You need objective, repeatable data to validate that every pair of headphones leaving your factory delivers the exact comfort profile your engineers intended.
We developed the Derui Touchscreen Headset Clamping Force Testing Machine to solve this. This is not just a force gauge; it is a comprehensive Headband Pressure Profiling System designed to measure, analyze, and validate the ergonomic performance of every headphone design. We help you turn subjective "feel" into objective Newtons of force.
Here is why leading headphone manufacturers are using our clamping force testers to perfect their comfort:
A headphone doesn't apply uniform pressure around the ear; it creates a complex force distribution across the head and ears. Our system captures the full ergonomic picture using an array of high-precision biomechanics sensors.
Peak Clamping Force Measurement: We measure the maximum force exerted by the headband, typically at the top of the head and at the ear contact points.
Force Distribution Mapping: Using a specialized headform equipped with multiple sensors, we create a color-coded pressure map showing exactly where the headband contacts the head and where pressure points may exist.
Left-Right Balance Verification: The system independently measures force on the left and right earcups, ensuring perfect symmetry for balanced comfort.
| Feature | Benefit |
|---|---|
| Dual-Channel Load Cells | Simultaneously measure force on left and right earcups to detect assembly imbalances. |
| Anatomical Headforms | Interchangeable headforms in standard sizes (Small, Medium, Large) to test across your target demographic. |
| Real-Time Force Curve | Watch the clamping force evolve live as the headband is opened and closed. |
A headband that feels perfect out of the box is useless if it relaxes after a week of use. Our machine functions as a Headband Relaxation Tester, automating the wear-in process to predict long-term comfort.
Simulated Wear Cycling: The machine repeatedly opens and closes the headband to the maximum use width, simulating weeks of use in hours.
Force Decay Tracking: The system doesn't just count cycles; it charts the change in clamping force over time. A slight, predictable relaxation is normal. A dramatic drop indicates poor material selection or design.
Relaxation Prediction: The software analyzes the force decay curve to predict the "settled" clamping force after 100, 500, or 1000 use cycles.
Different users have different head sizes. A headband that fits a small head perfectly may crush a large-headed user. Our system tests across the entire adjustment range.
Adjustable Test Widths: Program the machine to test clamping force at multiple head widths—from 120mm (small/child) to 200mm (large/adult).
Force-Displacement Analysis: Generate a complete force profile showing how clamping pressure increases as the headband is opened wider. This reveals the "spring rate" of your headband design.
Peak Width Testing: Test to the maximum designed opening width to ensure the headband doesn't take a set or deform permanently.
In modern manufacturing, comfort is a spec, not a feeling. Every test cycle is logged automatically, linking mechanical performance to specific production batches or design revisions.
Exportable Reports: Generate comprehensive PDF reports showing force-displacement curves, peak clamping force, left-right balance, and relaxation over time.
Batch Comparison: Overlay the clamping force profile of a new batch against the "Golden Sample" approved by R&D.
ISO & ASTM Compliance: Our testing protocols are designed to align with global standards for consumer product safety and ergonomic testing.
Precision in comfort testing requires a machine sensitive enough to feel a gram of pressure but robust enough to simulate years of use. The Derui Headset Clamping Force Tester is engineered for this delicate balance.
Our machine uses anatomically correct headforms and high-resolution sensors to provide the clean data needed for ergonomic design decisions.
| Feature | Specification |
|---|---|
| Test Stations | Single Station |
| Load Cell Capacity | 50 N (5 kg) per channel / Resolution: 0.01 N |
| Head Width Range | 80mm – 220 mm (adjustable) |
| Positioning Accuracy | ±0.1 mm |
| Test Speed | 10 – 500 mm/min |
| Cycling Frequency | Up to 20 cycles/min |
| Data Sampling Rate | 100 Hz |
| Dimensions | 600mm (L) x 500mm (W) x 400mm (H) |
Versatility is key for testing across different target demographics and product categories.
| Headform Type | Application |
|---|---|
| Standard Medium (M) | Default headform for general consumer headphone testing. |
| Small (S) | For testing headphones targeted at youth or Asian markets. |
| Large (L) | For testing over-ear headphones for Western adult males. |
| Custom Headforms | We can design headforms to match your specific target anthropometric data. |
Peak Clamping Force: Maximum force exerted at the specified head width.
Average Clamping Force: Mean force across the adjustment range.
Left-Right Imbalance: Percentage difference between left and right earcup forces.
Force Decay Rate: Percentage of force lost over simulated use cycles.
Relaxed Force: Projected clamping force after 100/500/1000 cycles.
Integrating precise comfort validation into your product development or QC process is simple.
Step 1: Headform Selection & Mounting
The operator selects the appropriate anatomical headform (Small, Medium, Large) based on the target market. The headphone is placed onto the headform in the "resting" position.
Step 2: Parameter Programming
Using the intuitive 10-inch touchscreen interface, the operator defines the test profile:
Test Mode: Static Clamping Force / Force-Displacement Analysis / Relaxation Cycling.
Parameters: Test width, test speed, number of cycles, pass/fail force limits.
Data Logging: Select which graphs to generate and where to save the report.
Step 3: Automated Testing
The system initiates the test. The moving platen gradually opens the headband to the programmed width, simulating the head size. The dual-channel load cells measure the force exerted by each earcup in real-time. The touchscreen displays the live force curve and left-right balance.
Step 4: Analysis & Reporting
Upon test completion, the software analyzes the data.
Pass: The clamping force falls within the specified range (e.g., 3.5N – 5.5N) and left-right balance is within tolerance (e.g., <5% difference). A PDF certificate is generated automatically.
Fail: The system highlights whether the force is too high (comfort risk), too low (acoustic seal risk), or imbalanced (assembly defect). The test station alerts the operator.
Any company where long-term wear comfort defines the product's premium perception.
Premium Headphone Manufacturers: Validating the clamping force of $500+ audiophile headphones for all-day studio use.
Gaming Headset Producers: Ensuring the rugged headsets required for marathon gaming sessions remain comfortable for hours.
Consumer Electronics OEMs: QC testing for OEM/ODM suppliers to ensure batch consistency of headband tension.
Hearing Protection Manufacturers: Testing the clamping force of industrial earmuffs to ensure both comfort and effective noise isolation.
AR/VR Headset Designers: Validating the headband pressure of virtual reality headsets for extended wear scenarios.
IEC 60268-7: Alignment with standards for headphone and earphone mechanical testing.
ISO/TS 16976-2: Respiratory interface devices—relevant for testing pressure distribution.
ASTM F2057 - Consumer Product Safety: Relevant standards for mechanical reliability and safety of wearable products.
What is the ideal clamping force for headphones?
While it varies by design and target market, most comfortable over-ear headphones fall within the range of 3N to 6N of total clamping force. On-ear headphones (which press directly on the ear) typically require lower forces, around 2N to 4N. Our machine helps you establish and validate your own ideal spec based on user testing and comfort studies.
How do you account for different head sizes?
Our machine tests across the entire adjustable width range. You can program it to test at multiple specific widths (e.g., 140mm, 160mm, 180mm) to simulate small, medium, and large heads. This ensures your headband provides appropriate comfort across your entire target demographic.
Can this test headphones with suspension-style headbands?
Absolutely. Suspension headbands (with a self-adjusting strap) present unique testing challenges, but our system handles them easily. The force measurement captures the total clamping force regardless of how it's distributed across the headband. The pressure mapping headform option is particularly valuable for analyzing how suspension designs distribute force across the top of the head.
What's the difference between clamping force and contact pressure?
Clamping force is the total force (in Newtons) exerted by the headband. Contact pressure (in Pascals or g/cm²) is the force distributed over a specific area. A headband with the same clamping force can feel very different depending on how that force is distributed—wide, padded headbands spread the force; narrow, unpadded bands concentrate it. Our system measures both: total force via load cells and pressure distribution via the optional sensor-embedded headform.
Does Derui provide calibration services for the load cells?
Absolutely. Every machine ships with a traceable calibration certificate for the load cells. We also offer annual re-calibration services to ensure your force data remains accurate and compliant with your internal quality systems.
