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KR-20260066797-A - Windshield and method of manufacturing the same, vehicle

KR20260066797AKR 20260066797 AKR20260066797 AKR 20260066797AKR-20260066797-A

Abstract

The present disclosure discloses a windshield mounted on a vehicle including an instrument panel, a method for manufacturing the same, and a vehicle, wherein the windshield comprises an outer glass plate, an intermediate layer, and an inner glass plate, and the windshield has a first weakening area, and the first weakening area is tested using an adult head-type impactor, and the adult head-type impactor is struck against the first weakening area so as to cause the first weakening area to break, and after the first weakening area is broken, the adult head-type impactor strikes the instrument panel, and between 0 and 5 ms after the adult head-type impactor strikes the first weakening area, there is a first head injury criterion HIC1, where 100 ≤ HIC1 ≤ 650, and between 5 and 15 ms after the adult head-type impactor strikes the first weakening area, there is a second head injury criterion HIC2, where HIC2 < 1000. The present disclosure can achieve both collision protection for pedestrians and safety protection for occupants inside the vehicle, and its overall safety performance is superior.

Inventors

  • 천 안
  • 리 웨이쥔
  • 궈 융
  • 장 찬중

Assignees

  • 푸야오 글라스 인더스트리 그룹 컴퍼니 리미티드

Dates

Publication Date
20260512
Application Date
20241024
Priority Date
20231024

Claims (20)

  1. As a front windshield mounted on a vehicle including an instrument panel, The above-described front glass comprises an outer glass plate, an intermediate layer, and an inner glass plate, wherein the outer glass plate has opposing first and second surfaces, the inner glass plate has opposing third and fourth surfaces, and the intermediate layer is connected between the second surface and the third surface. The above-mentioned front windshield has a first weakening zone, and the first weakening zone is tested using an adult head-type impactor, and the adult head-type impactor is struck against the first weakening zone to cause the first weakening zone to be damaged, and after the first weakening zone is damaged, the adult head-type impactor strikes the instrument panel. The above adult head-type impactor has a first head injury criterion HIC1 between 0 and 5ms after impacting the first weakened area, where 100 ≤ HIC1 ≤ 650, and A front glass characterized by having a second head injury criterion HIC2 between 5 and 15 ms after the above adult head-type impactor impacts the above-mentioned first weakened area, wherein HIC2 < 1000.
  2. In paragraph 1, A front glass characterized by having a first maximum composite acceleration a5 between 0 and 5 ms after the adult head-type impactor impacts the first weakened area, and a second maximum composite acceleration a15 between 5 and 15 ms after the adult head-type impactor impacts the first weakened area, wherein a5 is greater than a15.
  3. In paragraph 2, A front glass characterized by a5 being 180g or less and a15 being 100g or less.
  4. In paragraph 2, A front glass characterized by the fact that the time during which the combined acceleration a between 0 and 15 ms after the above adult head-type impactor strikes the above first weakened area continuously exceeds 50 g is 3 ms or less.
  5. In paragraph 1, A front glass characterized by HIC2≤650 and HIC2 being smaller than HIC1.
  6. In paragraph 1, A front glass characterized by 200≤HIC1≤500 and HIC2≤500.
  7. In paragraph 1, The above-described front glass further has a second weakened area, and the second weakened area is tested using an adult head-type impactor, and the third head injury criterion HIC3 is present between 0 and 15 ms after the adult head-type impactor impacts the second weakened area, wherein HIC3 < 1000.
  8. In Paragraph 7, Front glass characterized by 100≤HIC3≤900.
  9. In Paragraph 7, A front glass characterized in that HIC3 is greater than HIC1 and 200≤HIC3≤800.
  10. In Paragraph 7, The front glass comprises a transparent area and a shielding area enclosed on the outer side of the transparent area, wherein the visible light transmittance of the transparent area is 70% or more, the visible light transmittance of the shielding area is 10% or less, and the first weakening area and the second weakening area are both located in the transparent area.
  11. In Paragraph 10, The above shielding area includes an upper shielding area, a left shielding area, a lower shielding area, and a right shielding area, and The distance between the lower boundary of the first weakening area and the lower shielding area is x, the distance between the left boundary of the first weakening area and the left shielding area is m, the distance between the right boundary of the first weakening area and the right shielding area is n, the distance between the upper boundary and the lower boundary of the first weakening area is h, x is 15 mm or less, m is 50 mm or less, n is 50 mm or less, and h is 100 mm to 300 mm, and A front glass characterized in that the distance between the upper boundary of the second weakening area and the upper shielding area is y, the distance between the left boundary of the second weakening area and the left shielding area is equal to m, the distance between the right boundary of the second weakening area and the right shielding area is equal to n, and y is 100 mm or less.
  12. In Paragraph 11, A front glass characterized by having a transitional weakening area provided between the lower boundary of the second weakening area and the upper boundary of the first weakening area, wherein the area of the transitional weakening area is smaller than the area of the first weakening area, and the transitional weakening area is tested using an adult head-type impactor, and a fourth head injury criterion HIC4 is present between 0 and 15 ms after the adult head-type impactor impacts the transitional weakening area, wherein HIC4 is greater than HIC1 and smaller than HIC3.
  13. In Paragraph 10, A front glass characterized in that the ratio of the area of the first weakening region to the area of the transparent region is 1/3 or less, the ratio of the area of the second weakening region to the area of the transparent region is 2/3 or less, and the area of the first weakening region is smaller than the area of the second weakening region.
  14. In paragraph 1, A front glass characterized by the fact that the time for the above adult head-type impactor to impact and break the above first weakened area is 3ms or less.
  15. In any one of paragraphs 1 through 14, A front glass characterized in that the bending strength of the third surface is greater than the bending strength of the second surface, and/or the bending strength of the fourth surface is greater than the bending strength of the second surface.
  16. In any one of paragraphs 1 through 14, A front glass characterized in that the thickness in the first weakening region of the intermediate layer is 0.38mm to 0.6mm.
  17. In any one of paragraphs 1 through 14, A front glass characterized by the moisture content of the intermediate layer being 0.3% to 0.4% or 0.6% to 0.7%.
  18. In any one of paragraphs 1 through 14, The concentration of tin oxide on the second surface is greater than the concentration of tin oxide on the first surface, and the concentration of tin oxide on the third surface is greater than the concentration of tin oxide on the fourth surface. Alternatively, a front glass characterized in that the concentration of tin oxide on the second surface is smaller than the concentration of tin oxide on the first surface, and the concentration of tin oxide on the third surface is smaller than the concentration of tin oxide on the fourth surface.
  19. In any one of paragraphs 1 through 14, A front glass characterized in that the ratio of the thickness of the outer glass plate to the thickness of the inner glass plate is 0.75 or more and less than 1.
  20. In any one of paragraphs 1 through 14, A front glass characterized by having at least one of the second surface, the third surface, and the fourth surface further provided with a weakening coating covering at least the first weakening area.

Description

Windshield and method of manufacturing the same, vehicle This application claims priority to a Chinese patent application filed on October 24, 2023, with application number 202311379454.X, and all contents disclosed in said patent application are incorporated by reference as part of this application. The present disclosure relates to the technical field of car window glass, and specifically provides a windshield, a method for manufacturing the same, and a vehicle. Conventional automotive safety design has focused primarily on protecting the driver or occupants inside the vehicle. However, with the advancement of automotive safety ideology and the development of automotive safety technology, countries such as China, the United States, and Europe have all proposed the concept of collision protection for pedestrians in automobiles, and have also established related pedestrian protection standards and laws. In the event of a head-on collision between a pedestrian and a vehicle, the pedestrian is likely to strike the hood, while their head is highly likely to hit the windshield. In such cases, the primary areas of injury sustained by the pedestrian are the lower extremities (calves and thighs), followed by head injuries that occur as the head falls downward after the legs have been impacted; this can potentially inflict serious to fatal injuries on the pedestrian. In particular, if the head penetrates the windshield and strikes other objects such as the instrument panel, it causes even more severe secondary damage to the pedestrian's head, as the dashboard typically houses airbags or head-up displays and likely contains a large amount of rigid plastic and metal structures. In conventional technology, windshields can effectively protect only the driver or passengers inside the vehicle, but they are ineffective in protecting pedestrians who collide with the vehicle. Regarding defects existing in conventional technology, the present disclosure provides a windshield, a method for manufacturing the same, and a vehicle that can reduce primary damage to the pedestrian's head area when a pedestrian collides with a vehicle, as well as reduce secondary damage to the dashboard of the pedestrian's head area, and have superior overall safety performance. As a specific technical example of an embodiment of the present disclosure, a windshield mounted on a vehicle including an instrument panel, wherein the windshield comprises an outer glass plate, an intermediate layer, and an inner glass plate, the outer glass plate has opposing first and second surfaces, the inner glass plate has opposing third and fourth surfaces, the intermediate layer is connected between the second surface and the third surface, the windshield has a first weak region, the first weak region is tested using an adult head-type impactor, and the adult head-type impactor is struck against the first weak region to cause the first weak region to break, the adult head-type impactor strikes the instrument panel after the first weak region is broken, and has a first head injury criterion HIC1 in the 0 to 5 ms period after the adult head-type impactor strikes the first weak region, where 100 ≤ HIC1 ≤ 650, and A front glass having a second head injury criterion HIC2 between 5 and 15 ms after an adult head-type impactor strikes a first weakened area, wherein HIC2 < 1000. In an exemplary embodiment, an adult head-type impactor has a first maximum composite acceleration a5 between 0 and 5 ms after impacting a first weakened area, and a second maximum composite acceleration a15 between 5 and 15 ms after impacting the first weakened area, wherein a5 is greater than a15. In an exemplary embodiment, a5 is 180g or less, and a15 is 100g or less. In an exemplary embodiment, the time during which the combined acceleration a between 0 and 15 ms after an adult head-type impactor strikes a first weakened area continuously exceeds 50 g is 3 ms or less. In an exemplary embodiment, HIC2 ≤ 650, and HIC2 is smaller than HIC1. In an exemplary embodiment, 200≤HIC1≤500 and HIC2≤500. In an exemplary embodiment, the front glass further has a second weakened area, and the second weakened area is tested using an adult head-type impactor, and a third head injury criterion HIC3 (wherein HIC3 < 1000) is present between 0 and 15 ms after the adult head-type impactor strikes the second weakened area. In an exemplary embodiment, 100≤HIC3≤900. In an exemplary embodiment, HIC3 is greater than HIC1, and 200≤HIC3≤800. In an exemplary embodiment, the front glass includes a transparent area and a shielding area enclosed on the outside of the transparent area, the visible light transmittance of the transparent area is 70% or more, the visible light transmittance of the shielding area is 10% or less, and the first weakening area and the second weakening area are both located in the transparent area. In an exemplary embodiment, the shielding area includes an upper shielding area, a left shielding area, a