CN212446591U

CN212446591U - Novel EMUs windshield sandwich structure

Info

Publication number: CN212446591U
Application number: CN202021441881.8U
Authority: CN
Inventors: 邹连龙; 段伟仪; 许睿; 姚迪
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd; China State Railway Group Co Ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-02-02
Anticipated expiration: 2030-07-21

Abstract

The utility model provides a novel EMUs windshield sandwich structure which characterized in that: the glass comprises three pieces of original glass and a multilayer intermediate film, wherein a PU film and a PET film are adhered on the inner original glass, and the inner interlayer of the outer original glass is the PU film; a PVB sandwich structure is adopted between the two pieces of original glass at the inner side and the middle part, and the sandwich structure is divided into five layers: the first layer is a wedge-shaped heat insulation PVB film from left to right, the second layer is a PVB shading film, the third layer is a common heat insulation PVB film with the same thickness, the fourth layer is a PET (polyethylene terephthalate) sound insulation film, the fifth layer is a wedge-shaped heat insulation PVB film, and a PVB interlayer which is combined with the first layer in a matched mode ensures that light source signals are converted into light which enters human eyes at the same angle and the ghost phenomenon is avoided; the utility model discloses a EMUs provide a high-speed motor car windshield structure of intellectuality, high travelling comfort, have established the basis for the intelligent development of high-speed train.

Description

Novel EMUs windshield sandwich structure

Technical Field

The utility model belongs to the technical field of railway passenger train windshield, especially, relate to an operation under satisfying speed per hour 400 kilometers and the low temperature environment possesses high sound insulation, thermal-insulated and anti-dazzling ability's windshield sandwich structure simultaneously.

Background

The windshield of the existing motor train unit generally comprises a plurality of curved surface toughened glass plates and a common PVB film sandwiched between the curved surface toughened glass plates, and resistance wires are distributed in the interlayer to provide heating requirements for parts, so that the use requirements of the common motor train unit can be met. However, the windshield has a single function, and when working conditions such as speed grade and temperature environment are improved or functional requirements such as integration, high sound and heat insulation requirements and high light shading performance are provided, the windshield with the existing structure cannot meet the requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multi-functional windshield sandwich structure of high-speed EMUs to enlarge high-speed EMUs windshield's intelligent application, satisfy the intelligent development demand of high-speed railway equipment trade.

In order to realize the utility model discloses the purpose, the utility model provides a novel EMUs windshield sandwich structure, its characterized in that: the glass comprises three pieces of original glass and a multilayer intermediate film, wherein a PU film and a PET film are adhered on the inner original glass, and the inner interlayer of the outer original glass is the PU film; a PVB sandwich structure is adopted between the two pieces of original glass at the inner side and the middle part, and the sandwich structure is divided into five layers: the first layer is the thermal-insulated PVB film of wedge from a left side to the right side, and the second floor is the PVB photomask, and the third layer is the thermal-insulated PVB film of ordinary thickness such as, and the fourth layer is the PET sound-proof membrane, and the fifth layer is the thermal-insulated PVB film of wedge, and the PVB intermediate layer that makes up with the cooperation of first layer ensures that the light source signal converts same angle incidence to people's eye, guarantees not have the ghost image phenomenon.

Further, a second layer of PVB light-shielding film is located in the windshield sandwich above the driver's seat to shield the driver from sunlight.

Further, the second layer of PVB light shielding film is a dark PVB film.

Furthermore, the thickness of the outermost layer of original glass sheet is 8mm, and the thickness of the middle layer and the thickness of the inner layer of original glass sheet are both 5 mm.

Further, the PVB interlayer structure is firmly bonded to the original glass sheet by a high temperature and high pressure process.

The utility model discloses a windshield sandwich structure is through pasting the PET film on the former piece glass in the inboard, the inside of the former piece glass in the outside sets up intermediate layer PU film, adopt PVB sandwich structure between two former piece glass in inboard and centre, not only satisfied current windshield shock resistance, the function that anti bird hit, still through sandwich structure's optimization cooperation design, make windshield possess high sound insulation, high thermal-insulated, high intelligent display function, for the EMUs provide an intellectuality, high travelling comfort's high-speed motor car windshield structure, the basis has been established for the intelligent development of high-speed train.

Drawings

FIG. 1 is a schematic view of the windshield interlayer

FIG. 2 is a view of the visual double image effect of the sandwich structure of the original windshield;

fig. 3 is a graph showing the visual improvement effect of the wedge-shaped films after matching.

Detailed Description

Referring to fig. 1, the embodiment of the present invention includes three pieces of original glass and a multilayer intermediate film, wherein the outmost original glass 1 with 8mm thickness, the intermediate layer and the inner glass are 5mm thickness of

original glass

3, 9, the glass is chemical toughened glass, the strength is higher, and the impact resistance is strong. The inner glass 9 is adhered with a PU film 10, a PET (polyester substrate) film 11, and the inner interlayer PU (polyurethane) film 2 of the outer glass 1, so that the windshield has better low-temperature impact resistance. The two sheets of original glass at the inner side 9 and the middle 3 adopt a PVB (polyvinyl butyral) sandwich structure, and the sandwich structure is divided into five layers:

the first layer is a wedge-shaped heat insulation PVB film 4 from left to right, and is prepared by adding nano heat insulation particles in the PVB film, so that heat insulation is guaranteed. The second layer is dark color PVB heat insulation film 5, and the good shading performance of the windshield is guaranteed through the design of the second layer. This dark color PVB layer can be sized according to the actual needs of the user, and this dark color film is typically added to the area above the driver's seat to block out sunlight for the driver. The third layer is a common heat insulation PVB film 6 which has the function of increasing the heat insulation performance of the glass, the thickness of the film is designed to be equal in thickness, the organization and the composition are the same as those of the first layer, and heat insulation particles are added in the PVB.

The fourth layer is a sound-insulating film 7, made of PET film, generally of different thickness of standard type, for example 0.1mm, 0.125mm, etc., as required, which ensures the sound-insulating properties of the windscreen.

The fifth layer is a wedge-shaped heat insulation film 8, the effect is the same as that of the first layer, a wedge-shaped structure in the thickness direction is designed, the wedge angle is extremely small, when a PVB interlayer combined with the first layer in a matched mode can ensure that light source information such as head-up display and the like irradiates on glass, through the reflection principle of light, when the light source irradiates on different layers, the light can be reflected to the same region due to different angles of the film, and the phenomenon of image ghost cannot occur. As shown in fig. 3, the wedge-shaped films are matched in angle to convert the light source signal into the same angle to be incident on human eyes, so as to ensure no ghost image, while the parallel films cause the light source signal to be dispersed, so that a visual ghost image is generated (as shown in fig. 2).

The above several layers of structures are firmly bonded with glass through high temperature and high pressure, and the novel motor train unit windshield is manufactured.

Claims

1. The utility model provides a novel EMUs windshield sandwich structure which characterized in that: the glass comprises three pieces of original glass and a multilayer intermediate film, wherein a PU film and a PET film are adhered on the inner original glass, and the inner interlayer of the outer original glass is the PU film; a PVB sandwich structure is adopted between the two pieces of original glass at the inner side and the middle part, and the sandwich structure is divided into five layers: the first layer is the thermal-insulated PVB film of wedge from a left side to the right side, and the second floor is the PVB photomask, and the third layer is the thermal-insulated PVB film of ordinary thickness such as, and the fourth layer is the PET sound-proof membrane, and the fifth layer is the thermal-insulated PVB film of wedge, and the PVB intermediate layer that makes up with the cooperation of first layer ensures that the light source signal converts same angle incidence to people's eye, guarantees not have the ghost image phenomenon.

2. The novel windshield sandwich structure of the motor train unit as claimed in claim 1, wherein: the second layer of PVB light shielding film is positioned in an area above a driver seat in the windshield sandwich structure and shields the driver from sunlight.

3. The novel windshield sandwich structure of the motor train unit as claimed in claim 1, wherein: the second PVB light shielding film is a dark PVB film.

4. The novel windshield sandwich structure of the motor train unit as claimed in claim 1, wherein: the thickness of the outermost layer of original glass sheet is 8mm, and the thickness of the middle layer and the thickness of the inner side of original glass sheet are both 5 mm.

5. The novel windshield sandwich structure of the motor train unit as claimed in claim 1, wherein: the PVB sandwich structure is firmly bonded with the original glass sheet through a high-temperature high-pressure process.