Passenger car floor with sound insulation and decrease of noise functions

A passenger car floor and functional technology, applied to vehicle components, superstructure sub-assemblies, layered products, etc., can solve the problems of low noise limit standards, can not truly reflect the comfort requirements of passengers, and achieve the goal of reducing wind noise Effect

Active Publication Date: 2009-06-10
ZHONGTONG BUS HLDG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current domestic noise limit standard for passenger cars is rela

Method used

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  • Passenger car floor with sound insulation and decrease of noise functions
  • Passenger car floor with sound insulation and decrease of noise functions
  • Passenger car floor with sound insulation and decrease of noise functions

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing, the present invention will be further described:

[0035] A passenger car floor with sound insulation and noise reduction functions, which is arranged at the rear of the passenger car, and the rear engine 11 of the passenger car is located below. , plywood layer 6, cavity 7, multi-layer composite sound-absorbing cotton layer 8, steel plate layer 9, self-skinning rubber sponge layer 10, such as image 3 shown. The multi-layer composite sound-absorbing cotton layer 8 includes three layers, which are sequentially from top to bottom: porous sponge sound-absorbing layer 1, high-density rubber-plastic sponge sound-insulating layer 2, and self-adhesive damping sound-insulating layer 3, such as figure 2 shown. The floor is provided with an inspection port for the rear engine, and an inspection cover is provided on the inspection port. The inspection cover includes the following four layers, which are in order from top to bottom...

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Abstract

The invention discloses a bus floor with acoustic insulation and damping functions, which is arranged at the back of a carriage, and comprises the following layers from the top down: a floor leather layer, a damping slab rubber layer, a bakelite board interlayer, a multilayer compound acoustic damping cotton layer, a steel plate layer and a self-crusting rubber-plastic sponge layer. A cavity is also arranged between the bakelite board interlayer and the multilayer compound acoustic damping cotton layer. The multilayer compound acoustic damping cotton layer comprises three layers from the top down, namely a porous sponge acoustic absorption layer, a high-density rubber-plastic sponge acoustic insulation layer and a self-adhesion damping acoustic insulation layer. The bus floor adopts sealing, acoustic absorption, acoustic insulation and vibration reduction to achieve the acoustic insulation and damping functions. After the floor is adopted, noise in a bus can be reduced, and environment in the carriage becomes more comfortable.

Description

technical field [0001] The invention relates to a passenger car floor with sound insulation and noise reduction functions. Background technique [0002] At present, with the gradual improvement of the noise limit standard for passenger cars, the issue of noise environmental protection is becoming more and more important. The noise inside the car is not only a mandatory inspection requirement for passenger cars leaving the factory, but also one of the mandatory requirements for export vehicles to meet foreign certification. With the increase in the number of Chinese bus exports, international certifications are gradually increasing. International certifications have strict requirements on the limit standards of bus noise. At present, it is extremely difficult to meet the international certification standards for domestic bus noise. [0003] With the development of the bus industry, people have more and more strict requirements on the comfort of passenger cars. Controlling the...

Claims

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Application Information

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IPC IPC(8): B60R13/08B62D25/20B32B5/18B32B15/04
Inventor 李明涛
Owner ZHONGTONG BUS HLDG
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