CN2324011Y - External rear-view mirror for vehicle with wide vision - Google Patents

Abstract

The utility model provides a rear-view mirror for a vehicle. The mirror face of the utility model is a smooth curved surface. According to the installation position of the rear-view mirror on the vehicle, the utility model is characterized in that the curvature radius of the curved line of the transverse section of a mirror face is gradually diminished from the direction which is near to the vehicle body to the direction which is far away from the vehicle body, the curved line of the longitudinal section of the mirror face is an arc line, and the radius of the curved line of the longitudinal section of the mirror face is gradually diminished from the position which is near to the vehicle body to the position which is far away from the vehicle body. When the utility model is adopted, the image-forming principle of the rear-view mirror is sufficiently considered; so the contradiction between the visual-field enlargement and the image reduction is successfully solved; thereby, the utility model has the advantages that the wide visual field for side view can be obtained, the image-reducing degree can be relatively decreased when a driver does rear view within a long distance.

Description

A kind of big visual field vehicle rear-view mirrors

The utility model relates to a kind of vehicle rear-view mirrors.

According to the knowledge of the applicant, the vehicle rear-view mirrors of practical application at present is generally with plane and the sphere reflecting surface (abbreviation minute surface) as eyeglass: the flat rearview mirror image is accurate, and it is out of question to observe this car rear, but the side-looking visual field is narrow; The visual field in each orientation of sphere back mirror is all very wide, but the corresponding degree of dwindling of image that caused is serious, especially the image of this car rear distant objects dwindle more obvious, influence observing effect.In addition, on partial mirror, add the design of little convex surface mirror in the practical application in addition, purpose is to broaden one's vision with the overview function of auxiliary plane mirror with the convex surface mirror, but two kinds of different eyeglasses have been used in this design, and chaufeur can not be observed the two sides eyeglass simultaneously, produce inconvenience in actual use, also there is open defect in this design.

The purpose of this utility model provides a kind of employing a slice eyeglass, and the broad side-looking visual field is arranged, the image that reduces a backsight distant place relatively dwindles the vehicle rear-view mirrors of degree.

The purpose of this utility model is to realize like this, be installed to position on the vehicle from eyeglass, the close car body in radius of curvature edge of the horizontal sectional curve of minute surface is to reducing gradually away from the car body direction, mirror and vertically sectional curve be circular arc line, from reducing gradually to the radius away from vertical sectional curve of car body position near car body, whole minute surface is a smooth surface.

Because the back mirror that has been installed on the vehicle has following general imaging features: eyeglass is by inside and outside inboard, centre, the outside three parts of being divided into, the inboard effect of eyeglass is reflection car body self image, as the object of reference of observing other mobile object, be the reflection car body object rear, far away in the middle of the eyeglass, the eyeglass outside is a reflection car body side object.As: front vehicle is overtaken other vehicles, and its image is to occur at the back mirror centre portion, and the image of overtaking process roughly is horizontal side shifting to eyeglass outside, and last image is outside the eyeglass " overflowing ".

The utility model is according to the back mirror imaging features, take above technical scheme, minute surface is reduced gradually from inboard, middle horizontal and vertical radius of curvature to the outside, the minute surface outside that radius of curvature is relatively little is that back mirror side-looking visual field height and width are protected, obtain the broad side-looking visual field, adapted to back mirror this part reflection rear, object image-forming feature far away in the middle of the minute surface that radius of curvature relatively increases, radius of curvature reduces relatively than the degree of dwindling of ambassador's image.The utility model successfully solved existing mirror field of view big and image is too small, image suitably and the not enough contradiction in the visual field.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is the scheme drawing of minute surface;

Fig. 2 is any 3 horizontal sectional curve scheme drawings from top to bottom of right mirror;

Among Fig. 3 from left to right be right mirror near car body to any 3 vertical cross hatch scheme drawings away from car body.

The radius of curvature of the horizontal sectional curve of minute surface is to reducing gradually away from the car body direction from close car body as can be seen from Figure 2; Vertical sectional curve of minute surface is a circular arc line as can be seen from Figure 3, and the radius away from the circular arc line of car body direction is more little.

Claims (1)

1, a kind of vehicle rear-view mirrors, minute surface is a smooth surface, from back mirror in the orientation that car body is settled, it is characterized in that minute surface horizontal sectional curve radius of curvature along near car body to reducing gradually away from the car body direction; Vertically sectional curve is a circular arc line, from reducing gradually to the radius away from vertical sectional curve of car body position near car body.

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