JPH07100440B2 - Railway vehicle interior material structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an interior material structure decorated with electrostatic flocking provided in a passenger compartment of a railway vehicle or the like, and particularly aims to reduce noise in the passenger compartment. The present invention relates to the structure of an interior material with electrostatic flocking.

[Conventional technology]

Conventionally, as an interior material with flocked, Japanese Patent Laid-Open No. 64-87340
As described in Japanese Patent Laid-Open Publication No. 2003-242, there is used one which obtains a predetermined shape by performing press molding with a flocked layer provided. Further, the one described in Japanese Examined Patent Publication No. 52-11692 shows a method for producing a flocked model by flocking short fibers. Further, the one described in JP-B-51-28107 is a manufacturing method in which the electrodeposited surface of the flocked is uneven, and the flocked length of a relatively long fiber is uniformly flocked even in the uneven corners. Shows.

[Problems to be Solved by the Invention]

The above-mentioned prior art shows a method for forming and pressing a material with flocked hair, or a manufacturing method for forming a pattern on a flocked electrodeposition surface, and a manufacturing method for producing no unevenness on the flocked surface even if the surface to be flocked has irregularities. Therefore, there is a problem that no consideration is given to the interior material for vehicles.

An object of the present invention is to reduce the noise in the vehicle interior by changing the fiber length of the flocked hair for the vehicle interior material or indoor equipment.

[Means for Solving the Problems]

The present invention relates to a top surface of a luggage rack outside the field of view of passengers in a passenger compartment, a ceiling interior material above the luggage rack, and an air conditioning duct in the ceiling portion for blowing air toward the inside of the vehicle. 1 is flocked, the ceiling interior material and the side interior material are perforated plates, and second flocking is performed on each, and the length of the second flocking is longer than the length of the second flocking. It is provided.

[Action]

According to such a configuration, the space formed by the upper surface of the luggage rack outside the passenger's view of the passenger compartment, the ceiling interior material above the luggage rack, and the interior material above the luggage rack becomes like a resonance box. Has become. Further, the air conditioning duct at the ceiling for blowing air toward the inside of the vehicle is also in a state like a resonance box. Then, the hair is planted here, and since the length of the hair is long, the sound can be sufficiently absorbed. This part is out of the passenger's field of view, so that it does not deteriorate in appearance.

In addition, since the ceiling interior material and the side interior material are perforated plates and the second hairs are respectively transplanted, the hole portions are also hair-implanted, and there is a sound absorption effect similar to membrane vibration, and a low cycle sound absorption effect is obtained. There is something.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a sectional view of a passenger compartment of a high-speed vehicle. 11 is the ceiling interior material,
Reference numeral 19 is a side interior material, each of which has relatively short fibers planted on its entire surface to make the interior of the guest room more sophisticated.
The indoor equipment includes a lamp cover 14 of the lamp 13, a discharge cover 20 for the cool and warm air discharge port 16, a luggage rack 15, a chair 18, and the like. Of these, the surfaces of the lamp cover 14 and the discharge cover 20 are also given a flocked finish similar to the interior material.

Reference numeral 12 is an air conditioning duct, 22 is a back surface of the luggage rack 15, 23 is a shaded portion of the ceiling interior material 11 by the luggage rack 15, 24 is a back surface of the lamp cover 14, and 25 is a back surface of the discharge cover 20. For the inner surface of these ducts and the rear surface of each equipment outside the passenger's view, the fiber length is 4 to 6 m in order to enhance the function of reducing the noise level in the passenger compartment.
Implants relatively long fibers with m.

FIG. 2 is a characteristic diagram of the reverberation method sound absorption coefficient due to the change in the length of the flocked hair. Short fibers used as general interior material with flock length of 1.5 mm are indicated by 27, and those with 3 mm length are 28, 6 m
The thing of m is shown by 28.

With regard to the in-vehicle noise level of a high-speed vehicle, the rolling noise due to the traveling carriage is relatively small in the in-vehicle propagation, and is often controlled by the sound of air conditioning ventilation. These air conditioner blowers generally take 1 minute
Since it is a high-speed rotation of around 2000 rpm, the dominant frequency of its noise value is often close to 2 KHz. From the sound absorption coefficient characteristics shown in FIG. 2, according to the present invention, an effect that a sufficient sound absorption effect can be enhanced There is. Further, since the luggage rack 15, the lamp cover 14, and the discharge cover 20 are the entire length in the longitudinal direction of the vehicle, there is an effect that the sound absorbing power of the passenger compartment can be increased unlike the case where other sound absorbing materials are attached.

Further, the upper surface of the luggage rack 15, the ceiling interior material 23 above the luggage rack 15,
And the space formed by the interior material 14 above the luggage rack is in a state like a resonance box. Further, the air conditioning duct 12 at the ceiling for blowing air toward the inside of the vehicle is also in a state like a resonance box. Then, the hair is planted here, and since the length of the hair is long, the sound can be sufficiently absorbed. This part is out of the passenger's field of view, so that it does not deteriorate in appearance.

The interior material described above is supposed to be flocked on a flat plate, but if flocking is applied on a perforated plate that makes use of the characteristics of resonance sound absorption, it is possible to increase the sound absorption effect in a low cycle peculiar to resonance sound absorption. In this case, electrodeposition by flocking is possible even in the small holes, so that the same noise reduction effect as membrane vibration can be expected.

When the air conditioner is cold, the discharge cover is flocked, so that there is an effect that no dew condensation occurs.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to this invention, the sound absorption ability can be improved by forming the hair-transplanting material with the sound absorption ability in the side surface and the ceiling around the vehicle interior, and further prolonging the hair-transplantation fiber of the part which a passenger does not see. Moreover, since the interior material is a perforated plate and the hair is planted, the sound absorption effect in a low cycle can be improved and the noise in the room can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a passenger compartment of a high-speed vehicle according to an embodiment of the present invention, and FIG. 2 is a diagram showing sound absorption coefficient characteristics according to length of flock applied to the present invention. 11 …… Ceiling interior material, 12 …… Air conditioning duct, 14 …… Lighting cover, 15 …… Package rack, 19 …… Side interior material, 20 …… Discharge cover

Claims (1)

[Claims] 1. An upper surface of a luggage rack outside the field of view of passengers in a passenger compartment, a ceiling interior material above the luggage rack, and an air-conditioning duct in the ceiling for blowing air toward the inside of the vehicle. First flocking, the ceiling interior material and the side interior material are perforated plates, and second flocking is performed on each, and the length of the second flocking is greater than the length of the second flocking. An interior material structure for railway vehicles characterized by a long history.