A car front windshield

Abstract

The utility model relates to an automobile front windshield, including glass inner piece, glass outer piece, PVB membrane and enameled wire, glass outer piece is fixed on glass inner piece, PVB membrane is fixed between glass outer piece and glass inner piece, enameled wire is fixed between PVB membrane and glass inner piece. Relative to prior art, the utility model can reduce stress mutation, greatly reduce the scrap rate, reduce cost, improve product quality.

Description

Technical Field

[0001] This utility model relates to the field of glass manufacturing technology, and more specifically, to an automotive windshield. Background Technology

[0002] During the production process of a car's windshield, such as... Figure 1 As shown, silver paste needs to be printed onto the ink, and then heated by electricity to achieve the windshield's defrosting function. However, during the production of the printed silver paste, the area of ​​the heating wires formed is very large, extending from the bottom to the crack location. Since the windshield also needs to undergo a hot bending operation during production, the corners are heated to very high temperatures. Due to the inconsistency in the coefficients of thermal expansion of the heating wires, glass, and ink in this area, abrupt stress occurs in the heating wires, leading to cracks. Therefore, it is necessary to solve this problem. Utility Model Content

[0003] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. Therefore, one objective of this invention is to provide an automotive windshield that can reduce stress mutations, significantly reduce scrap rates, lower costs, and improve product quality.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A windshield for automobiles, comprising:

[0005] Inner glass sheet;

[0006] An outer glass sheet, which is fixedly placed on the inner glass sheet;

[0007] PVB film, wherein the PVB film is fixedly placed between the outer glass sheet and the inner glass sheet;

[0008] Enameled wire, which is fixedly placed between the PVB film and the inner glass sheet.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, it also includes:

[0011] A connector, which is fixedly positioned at the lower edge of the inner glass sheet;

[0012] The enameled wire is arranged along the lower end edge and side wall edge of the inner glass sheet to form a circuit; the enameled wire is electrically connected to the terminal block.

[0013] Furthermore, the cross-sectional diameter of the enameled wire is 0.15 mm.

[0014] Furthermore, it also includes:

[0015] An ink layer is fixedly placed at the lower end of the inner glass sheet.

[0016] The beneficial effects of this utility model are: by arranging the enameled wire between the inner glass sheet and the PVB film, the enameled wire does not come into contact with the ink layer, thus not affecting the structure of the ink layer, the inner glass sheet, and the outer glass sheet. This reduces the impact of stress generated by thermal expansion on the inner and outer glass sheets, reduces cracking of the inner and outer glass sheets due to stress mutation, greatly reduces the scrap rate, lowers costs, and improves product quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a car windshield in the prior art;

[0018] Figure 2 This is a front view of a car windshield according to the present invention;

[0019] Figure 3 This is a structural schematic diagram of an automotive windshield according to the present invention.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Inner glass sheet, 2. Outer glass sheet, 3. PVB film, 4. Enameled wire, 5. Connector, 6. Ink layer, 7. Silver paste. Detailed Implementation

[0022] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0023] like Figure 1 and Figure 2 As shown, a car windshield includes:

[0024] Inner glass sheet 1;

[0025] Glass outer sheet 2, which is fixedly placed on glass inner sheet 1;

[0026] PVB film 3, wherein the PVB film 3 is fixedly placed between the outer glass sheet 2 and the inner glass sheet 1;

[0027] Enameled wire 4 is fixedly placed between the PVB film 3 and the inner glass sheet 1.

[0028] The above embodiments also include:

[0029] The connector 5 is fixedly placed at the lower edge of the inner glass sheet 1;

[0030] The enameled wire 4 is arranged along the lower end edge and side wall edge of the inner glass sheet 1 to form a circuit; the enameled wire 4 is electrically connected to the terminal 5.

[0031] PVB film is specifically made of polyvinyl butyral, an important synthetic polymer material with excellent adhesion, flexibility, transparency and impact resistance, and is widely used in many fields.

[0032] In the above embodiment, the cross-sectional diameter of the enameled wire 4 is 0.15 mm.

[0033] The above embodiments also include:

[0034] Ink layer 6, which is fixedly placed at the lower end of the inner glass sheet 1.

[0035] In this specific application, both edges of the automotive windshield need to be hot-bent. The windshield is heated in a rapidly heating furnace, where it reaches a very high temperature, thus hot-bending the windshield. By arranging the enameled wire 4 between the inner glass sheet 1 and the PVB film 3, the enameled wire 4 does not come into contact with the ink layer, thereby not affecting the structure of the ink layer, the inner glass sheet 1, and the outer glass sheet 2. Furthermore, the 2.5mm silver paste printed on the ink is improved to an enameled wire with a diameter of 0.15mm, thereby reducing the cross-sectional area of ​​the heating wire and further reducing the impact of the stress generated by thermal expansion on the inner glass sheet 1 and the outer glass sheet 2. This reduces the likelihood of cracking of the inner glass sheet 1 and the outer glass sheet 2 due to sudden stress changes, greatly reducing the scrap rate, lowering costs, and improving product quality.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A windshield for automobiles, characterized in that, include: Inner glass sheet; An outer glass sheet, which is fixedly placed on the inner glass sheet; PVB film, wherein the PVB film is fixedly placed between the outer glass sheet and the inner glass sheet; A connector, which is fixedly positioned at the lower edge of the inner glass sheet; Enameled wire, the enameled wire being fixedly placed between the PVB film and the inner glass sheet, and The enameled wire is arranged along the lower end edge and side wall edge of the inner glass sheet to form a circuit; the enameled wire is electrically connected to the terminal block.

2. The automotive windshield according to claim 1, characterized in that, The cross-sectional diameter of the enameled wire is 0.15 mm.

3. The automotive windshield according to claim 1, characterized in that, Also includes: An ink layer is fixedly placed at the lower end of the inner glass sheet.

Images