1. The utility model provides a can eliminate front windshield of A post field of vision blind area, front windshield (1) the left and right sides meets with two A posts (2) respectively, its characterized in that, front windshield (1) is the smooth integrated structure in surface, front windshield (1) includes two left and right subsections (12), wherein, the inboard thickness of at least one subsection in two subsections (12) reduces gradually to the minimum thickness unanimity with another subsection from the side to the middle part, and the internal surface of this subsection (12) is the concave surface.

2. The front windshield capable of eliminating A-column view blind areas is characterized in that a constant part (11) is further arranged between the two subsections (12), and the thickness of the constant part (11) is uniform and consistent and is consistent with the minimum thickness of the two subsections (12).

Background

The automobile A column is a connecting column for connecting the roof and the front cabin on the left front side and the right front side, and provides support and certain rigidity for the automobile body. However, the column a of the automobile also blocks a part of the view in front of the automobile, and especially before turning or entering a curve, part of the sight of the driver is blocked, so that a vision blind area is caused, and traffic accidents are easily caused.

For the above problems, existing studies have given some solutions: patent CN103358996B adopts a method that an external camera of the vehicle is matched with a flexible liquid crystal display screen to provide complete road information for a driver, and patents CN107097723A, CN203543594U and the like adopt refraction blocks to eliminate visual blind areas; however, the method has some problems, namely the cost is high, or white spots, sudden visual changes and the like are caused by the separation and discontinuity of the refraction block and the windshield, so that the sight of a driver is disturbed and the road condition is accurately judged.

Disclosure of Invention

In view of the above, the invention provides a front windshield capable of eliminating a column a view blind area, which not only can eliminate the view blind area caused by the column a, but also can ensure the continuity of the view, and has low cost.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

the utility model provides a can eliminate front windshield of A post field of vision blind area, the front windshield left and right sides meets with two A posts respectively, front windshield is smooth integrated structure in surface, front windshield includes two left and right branches, wherein, the inboard thickness of at least one branch in two branches reduces gradually to unanimous with the minimum thickness of another branch from the side to the middle part, and the internal surface of this branch is the concave surface.

Further, in the above-described aspect, a constant portion is further provided between the two divisions, and a thickness of the constant portion is uniform and is uniform to a minimum thickness of the two divisions.

The invention has the beneficial effects that: the inner surface of the subsection is arc-shaped and is naturally transitionally connected with the surface of the constant part, so that the visual field distortion formed at the junction of the additional device and the windshield in the prior art is effectively avoided; by adopting the integrated structure, the visual field deviation caused by the adhesion layer between the additional device and the windshield can be avoided.

Drawings

FIG. 1 is a schematic sectional view showing a windshield according to example 1;

FIG. 2 is a light path diagram of a windshield in example 1;

FIG. 3 is a light path diagram of a windshield in comparative example 1;

FIG. 4 is a schematic cross-sectional structure of a windshield in comparative example 2;

FIG. 5 is a light path diagram of a windshield in comparative example 2;

FIG. 6 is a schematic sectional structure of a windshield in comparative example 3;

fig. 7 is a light path diagram of a windshield in comparative example 3.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.

Example 1

As shown in figure 1, the left end and the right end of a front windshield 1 capable of eliminating a visual blind area of an A column are respectively connected with two A columns 2; the front windshield 1 is an integrated structure with smooth inner and outer surfaces, the front windshield 1 comprises a left subsection 12 and a right subsection 12, wherein the thickness of the inner side of at least one subsection 12 of the two subsections 12 is gradually reduced from the side edge to the middle part to be consistent with the minimum thickness of the other subsection, and the inner surface of the subsection 12 is a concave surface; it should be noted that the left and right sections 12 are not symmetrical, and their width and thickness may be varied according to actual needs. In the embodiment, a constant part 11 is further arranged between the left subsection 12 and the right subsection 12, the thickness of the constant part 11 is uniform and consistent, and the thickness of the inner sides of the left subsection 12 and the right subsection 12 is gradually reduced from the side surface to the middle part until the thickness of the inner sides of the left subsection 12 and the right subsection is consistent with the thickness of the constant part 11; the width L of the constant portion may be 0 or greater than 0, and the specific width thereof may be set according to actual needs.

Comparative example 1

A front windshield, which is different from embodiment 1 in that: the thickness of the front windshield 1 is uniform and consistent, and no additional structure is arranged at the two ends.

Comparative example 2

A front windshield, as shown in fig. 4, different from embodiment 1: the thickness of the front windshield 1 is uniform, the additional structures 3 are arranged on the two ends of the inner surface, and the surface 31 of the additional structure 3 is a plane structure.

Comparative example 3

A front windshield, as shown in fig. 6, different from embodiment 1: the thickness of the front windshield 1 is uniform, the additional structures 3 are arranged at two ends of the inner surface, and the surface 31 of the additional structure 3 is of an outwardly convex cambered surface structure.

The optical path diagram analysis of the front windshield in example 1 and comparative examples 1 to 3 is performed by using COMSOL, and it can be seen from the figure that the structure in example 1 can effectively eliminate the view blind area of the a-pillar by refraction, and the partial concave surface can more effectively remove the occlusion of the a-pillar than the plane and the convex surface.

Note that, when the optical path diagrams of the respective structures were analyzed using the software described above, the influence of the adhesive layer between the additional structure 3 and the windshield in the comparative example on the line of sight was not considered, but the influence was predictable during use. In addition, it is undeniable that the width and thickness of the section 12 inevitably affect the driver's realization, but the a-pillars and windshields of different models are different in size, and the requirements for the width and thickness of the section are different, so the present invention is not discussed in depth.

It is to be understood that no matter how much of this specification appears, such as in the prior art or common general knowledge. The present embodiments are illustrative only and not intended to limit the scope of the present invention, and modifications and equivalents thereof by those skilled in the art are considered to fall within the scope of the present invention as set forth in the claims.