CN2397004Y

CN2397004Y - Rear-view mirror mounted on vehicle exterior

Info

Publication number: CN2397004Y
Application number: CN 99242843
Authority: CN
Inventors: 陈燕成
Original assignee: Individual
Current assignee: Li Yongpan
Priority date: 1999-09-11
Filing date: 1999-09-11
Publication date: 2000-09-20
Anticipated expiration: 2009-09-11

Abstract

The utility model relates to an external rear-view mirror for vehicles. The mirror face of the utility model is a convex mirror formed by a main visual field region spherical surface and an enlarging visual field region free curved surface, wherein, the free curved surface is smoothly connected with the spherical surface and has a curvature radius similar to that of the spherical surface. The mirror face of the utility model has the advantages of effectively enlarging visual fields, decreasing blind areas and simultaneously satisfying the requirement of a national standard, and the main visual field region part of the mirror face is a spherical mirror.

Description

The vehicle rear-view mirrors

The utility model relates to a kind of vehicle optical viewing arrangement, particularly a kind of vehicle mirrors.

Back mirror is the important device of running safety, and existing back mirror mainly contains several types such as plane mirror, spherical mirror or all kinds of mono-curved mirrors, the major defect of its existence be or field range little, the blind area is bigger; Or the distortion of imaging scenery, machine Yi Zaocheng driver erroneous judgement.In addition, the curved mirror of some particular curvature can not satisfy the requirement of country or industry standard.The utility model is design-calculated in order to overcome above two kinds of shortcomings simultaneously.

The purpose of this utility model provides a kind of vehicle rear-view mirrors, by the combination with the curved mirror of spherical mirror and particular curvature, forms the minute surface of back mirror.

Of the present utility modelly provide a kind of vehicle rear-view mirrors, its minute surface is by the convex mirror of forming as the free form surface in the sphere of main area of visual field and the zone of broadening one's vision, and free form surface partly is being connected and has a radius of curvature close with land portions with the intersection of land portions is smooth.

The variation that is positioned at horizontal (both from the outside direction of the car body) radius of curvature of free form surface in the sphere outside reduces from inside to outside gradually, from top to bottom can be constant, also can reduce gradually; The variation that is positioned at the free form surface vertical direction radius of curvature of sphere downside reduces from top to bottom gradually, from inside to outside can be constant, also can reduce gradually.

Minute surface of the present utility model can be broadened one's vision effectively, reduces the blind area, can satisfy the requirement of GB simultaneously, and both the main area of visual field part of minute surface should be a spherical mirror.

Below in conjunction with description of drawings embodiment of the present utility model.

The utility model has four width of cloth accompanying drawings.

Fig. 1 is the scheme drawing of horizontal left side vehicle rear-view mirrors minute surface;

Fig. 2 is the scheme drawing of horizontal right side vehicle rear-view mirrors minute surface;

Fig. 3 is the scheme drawing of the perpendicular left side vehicle rear-view mirrors minute surface of putting;

Fig. 4 is the scheme drawing of the perpendicular right side vehicle rear-view mirrors minute surface of putting.

1 is sphere among the figure, and 2 is free form surface.Below be example with horizontal left side vehicle rear-view mirrors shown in Figure 1, embodiment of the present utility model is described, other three kinds of situations and Fig. 1 are in like manner.

Minute surface comprises two parts among Fig. 1, and the part that wherein is positioned at the minute surface upside is a sphere, and remainder is a free form surface.The radius of curvature of sphere 1 should be enough big, with " performance of automobile rearview mirror and installation requirement " standard GB 15084-94 of satisfying issue in State Bureau of Technical Supervision on May 31st, 1994 requirement to curvature mirror radius and minute surface size.Free form surface 2 is the different curved surface of each several part radius of curvature, and the variation that is positioned at horizontal (both from the outside direction of the car body) radius of curvature of free form surface in the sphere outside reduces from inside to outside gradually, from top to bottom can be constant, also can reduce gradually; The variation that is positioned at the free form surface vertical direction radius of curvature of sphere downside reduces from top to bottom gradually, from inside to outside can be constant, also can reduce gradually.

Claims

1. vehicle rear-view mirrors, it is characterized in that: its minute surface comprises the free form surface as the sphere of main area of visual field and the zone of broadening one's vision, free form surface part is being connected and has a radius of curvature close with land portions with the intersection of land portions is smooth, the free form surface that is positioned at the sphere outside is horizontal, that is: the variation from the radius of curvature of the outside direction of car body reduces from inside to outside gradually, from top to bottom can be constant, also can reduce gradually; The variation that is positioned at the free form surface vertical direction radius of curvature of sphere downside reduces from top to bottom gradually, from inside to outside can be constant, also can reduce gradually.