一种具有降噪功能的汽车排气管
By installing a fixing ring on the outside of the exhaust pipe and noise reduction components on the inner wall, combined with sound-absorbing cotton, springs, and feedback monitoring, the noise and shaking problems caused by exhaust pipe vibration are solved, achieving efficient noise reduction and vibration damping, and improving the overall vehicle's quietness and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing automotive exhaust pipes experience shaking and impacts during operation due to engine exhaust pulses and vehicle vibrations, resulting in structural noise and metallic knocking sounds. Furthermore, existing spring structures have limited absorption capacity for high-frequency or large-amplitude impacts, which can easily lead to loosening and wear over time, affecting the vehicle's noise reduction performance and safety.
A fixing ring is set on the outside of the exhaust pipe, and multiple noise reduction components, including sound-absorbing cotton, springs and multi-level buffer structures, are evenly distributed on the inner wall of the fixing ring. Combined with a feedback monitoring device, it can realize real-time monitoring of vibration and fault early warning, and synergistically absorb and dissipate mechanical energy.
It significantly improves the noise reduction and vibration damping performance of the exhaust system, extends its service life, enhances the overall vehicle's quietness, comfort, and safety, and prevents system damage caused by abnormal vibration.
Smart Images
Figure CN224515254U_ABST
Abstract
Claims
1. A car exhaust pipe with noise reduction function, comprising a car exhaust pipe (1), characterized in that: The exhaust pipe (1) of the car is surrounded by a fixing ring (11), which is mounted on the frame. The inner wall of the fixing ring (11) is equipped with a plurality of evenly distributed noise reduction components (2). The noise reduction components (2) include a plurality of sealing cylinders (22) embedded in the inner wall of the fixing ring (11). A sliding rod (23) is slidably connected inside the sealing cylinder (22). An abutment plate (25) is fixedly connected to the bottom end of the sliding rod (23). Sound-absorbing cotton is installed around the abutment plate (25).
2. The automobile exhaust pipe with noise reduction function according to claim 1, characterized in that: The slide rod (23) is surrounded by a spring (24), and the two ends of the spring (24) are fixedly connected to the sealing cylinder (22) and the abutment plate (25) respectively.
3. The automobile exhaust pipe with noise reduction function according to claim 1, characterized in that: A sealing gasket (31) is fixedly connected to one end of the slide rod (23) and inside the sealing cylinder (22). The sealing gasket (31) is slidably connected to the sealing cylinder (22), and a sealing rod (32) is fixedly connected to the top of the sealing gasket (31).
4. The automobile exhaust pipe with noise reduction function according to claim 3, characterized in that: One end of the sealing cylinder (22) is fixedly connected to the feedback cylinder (26). The sealing rod (32) passes through the inner wall of the sealing cylinder (22) and extends into the feedback cylinder (26). One end is fixedly connected to a limiting block (33). The limiting block (33) is slidably connected to the feedback cylinder (26).
5. The automobile exhaust pipe with noise reduction function according to claim 4, characterized in that: The top of the limiting block (33) is fixedly connected to a top rod (34), and a feedback rod (27) is slidably connected inside the feedback cylinder (26).
6. The automobile exhaust pipe with noise reduction function according to claim 5, characterized in that: The feedback rod (27) is surrounded by a friction sleeve.