Delivered an Automatic-Door Anechoic Box to a Certain Automotive Parts Manufacturer
An anechoic box for acoustic measurement of small parts and units, equipped with an automatic opening/closing mechanism and sound-absorbing structure.
AEB
Sonora Technology Co., Ltd. designed and manufactured an automatic-door anechoic box for a certain automotive parts manufacturer.
This equipment is an anechoic box intended for acoustic measurement and quality evaluation of small parts and units. The box body features a multi-layered sound-insulating METAL structure. By combining AST sound-absorbing material and a rear sound-absorbing layer inside, the structure reduces internal reflections while minimizing the influence of external noise.
An upward- and downward-opening automatic door is adopted on the front, and the plug mechanism and air cylinder drive efficiently facilitate the loading and unloading of measured objects. Furthermore, the interior is equipped with a sample table, sound-absorbing mat, and microphone bosses/clamps, providing specifications that allow easy setting according to the measured object and measurement conditions.
In addition, the utility pipes are provided with sound insulation covers and sound-absorbing materials, accommodating measurement environments that require wiring and piping. This is a delivery case where sound insulation, sound absorption, and workability are well-balanced in the evaluation environment for small measured objects.
Delivery Overview
| Recipient | A certain automotive parts manufacturer |
| Delivered Equipment | Automatic-Door Anechoic Box |
| Purpose | Acoustic measurement, R&D, and quality evaluation of small parts/units, etc. |
| External Dimensions | Approx. W1,150 × D1,050 × H1,853 mm |
| Approximate Measurement Space | Sample table/sound-absorbing mat: Approx. W530 × D500 × t25 mm, Approximate effective height in A-A cross-section: Approx. H390 mm |
| Automatic Door Opening | W700 × H400 mm, Upward/Downward opening, Plug mechanism, Air cylinder drive |
| Guaranteed Sound Insulation Value | 45 dB at 500 Hz (JIS A 1417:2000) |
| Estimated Weight | Approx. 800 kg |
Main Specifications
| Sound Insulation Structure | Multi-layered sound-insulating METAL structure, Paint color 2.5Y9/1 (semi-gloss) |
| Sound Absorption Structure | AST sound-absorbing material + Rear sound-absorbing layer |
| Sample Table | Steel, t=4.5, includes sound-absorbing mat |
| Carry-in/Installation | Carry-in eyebolts 4-M20 (detachable), Heavy-duty adjusters, Swivel casters, Dedicated base |
| Vibration Isolation/Support | Vibration isolation pads (4-point support) |
| Utilities | 2-φ100, with sound insulation cover and sound-absorbing material |
| Measurement Fixtures | Microphone bosses/clamps × 3 units |
| Lighting | LED downlight equivalent to 60W, Terminal block provided |
Key Points of This Project
- Automatic door improves the efficiency of loading and unloading measured objects.
- Equipped with a sample table and sound-absorbing mat suitable for the evaluation of small parts and units.
- Equipped with microphone clamps to accommodate microphone placement tailored to measurement conditions.
- Utility pipes have a sound insulation cover and internal sound absorption treatment, ensuring no impact on background noise after wiring.
- Casters, adjusters, and a dedicated base ensure ease of installation and operation.
Sound Insulation Performance
In this equipment, a guaranteed sound insulation value of 45 dB at 500 Hz has been set. Sound insulation performance is secured to suppress the influence of external noise and allow stable measurements in the evaluation environment for small measured objects.
| Item | Frequency | Guaranteed Sound Insulation Value |
|---|---|---|
| Guaranteed Sound Insulation Value (JIS A 1417:2000) | 500 Hz | 45 dB |