Laminated glass

Patent metadata

Field	Value
Publication number	US-12454167-B2
Application number	US-202118024671-A
Country	US
Kind code	B2
Filing date	Sep 3, 2021
Priority date	Sep 4, 2020
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

It is possible to prevent the appearance of laminated glass from deteriorating due to wrinkles formed in a functional layer of an intermediate film disposed between two curved glass plates. Laminated glass for an automobile is provided. Laminated glass according to the present invention includes an outer glass plate, an inner glass plate disposed opposite to the outer glass plate, and an intermediate film disposed between the outer glass plate and the inner glass plate. The outer glass plate and the inner glass plate are curved in a horizontal direction and a vertical direction. The intermediate film includes a functional layer, and a bonding layer for fixing the functional layer between the two glass plates. At least one notch or cut extending from the edge of the functional layer is formed in the functional layer.

First claim

The invention claimed is:

1. Laminated glass to which an information acquisition device for acquiring information regarding the outside of a vehicle using light is attachable via a bracket, the laminated glass comprising:
an outer glass plate;
an inner glass plate disposed opposite to the outer glass plate;
a functional layer disposed between the outer glass plate and the inner glass plate;
a bonding layer for fixing the functional layer between the two glass plates; and
a shield layer that is provided on at least one of the outer glass plate and the inner glass plate and suppresses transmission of visible light from the outside of the vehicle,
wherein the outer glass plate and the inner glass plate are curved in a horizontal direction and a vertical direction,
the shield layer includes:
a peripheral edge region formed on a peripheral edge portion of the laminated glass to be fixed to a vehicle body; and
an attachment region that protrudes from the peripheral edge region and to which at least a portion of the bracket is to be attached, and

when a pair of virtual lines that extend perpendicular to an edge of the laminated glass from two sides of a connection portion where the attachment region and the peripheral edge region are coupled to each other are defined, at least one selected from at least one of notch and cut is formed at an edge of the functional layer at a position corresponding to one of a region located between the pair of virtual lines in the peripheral edge region, and the attachment region.

2. The laminated glass according to claim 1 , wherein at least one notch is formed in the functional layer.

3. The laminated glass according to claim 2 , wherein a tip portion of the notch is acute.

4. The laminated glass according to claim 1 ,
wherein the outer glass plate and the inner glass plate are formed in a substantially rectangular shape with long sides and short sides, and
the notch or cut is formed near at least one of the long sides.

5. The laminated glass according to claim 1 ,
wherein a horizontal curvature radius and a vertical curvature radius of each of the outer glass plate and the inner glass plate are different, and
the notch or cut is formed at an end side extending in the direction with a smaller curvature radius.

6. The laminated glass according to claim 1 ,
wherein the attachment region is provided with an information acquisition region for accepting the light, and
the notch or cut is not formed in the information acquisition region.

7. The laminated glass according to claim 1 ,
wherein the attachment region is provided with an information acquisition region for accepting the light, and
the notch is formed to include the information acquisition region.

8. The laminated glass according to claim 1 , wherein at least one second notch with an acute tip is formed on the edge where the notch or cut is formed, at a position different from that of the notch or cut.

9. The laminated glass according to claim 1 , wherein a plurality of the notches or cuts are formed.

10. The laminated glass according to claim 1 , wherein the notch or cut is further formed at a position corresponding to the peripheral edge region of the shield layer.

11. The laminated glass according to claim 1 , wherein the functional layer has a thickness of 2.0 mm or less.

12. The laminated glass according to claim 1 , wherein the functional layer is formed using a projection film for an HUD.

13. The laminated glass according to claim 1 , wherein the intermediate film includes the functional layer, and a pair of the bonding layers between which the functional layer is sandwiched.

Assignees

• Nippon Sheet Glass Co Ltd

Inventors

• Chiba Kazuki

Classifications

• B32B2605/00

  Vehicles · CPC title

• B32B17/10761

  containing vinyl acetal · CPC title

• B32B17/10449

  Wavelength selective transmission · CPC title

• B32B17/10293

  Edge features, e.g. inserts or holes · CPC title

• B32B17/10036

  comprising two outer glass sheets · CPC title