DE6916679U - MOTOR VEHICLE REAR MIRROR TO AVOID THE SO-CALLED DEAD NECK - Google Patents

Description

Name of the inventor: Gerd-Detlef Jessen

Subject of the invention: motor vehicle rearview mirrors to avoid

the so-called "dead angle"

File number : P 19 21 076.5

Description of the invention

The "blind spot" in a driver's safety field is a big one Poses a danger to the flow of traffic, especially to the fabric lane change of vehicles to the left. The normally used planar or spherically slightly convexly curved rearview mirrors grant only rear view in a restricted sector (sector 1 in Fig. 1). Between this security sector and the sector for a direct view to the left without mirror aid (sector 2 in Fig. 1) there is the so-called "blind spot" (sector 3 in Fig. 1).

Numerous special types of rear-view mirrors have already been invented to eliminate the "blind spot". As far as was known these mirrors are characterized by two features:

1. The mirror surface is given a spherically convex curvature, i.e. the mirror surface represents a segment of a sphere (so-called "panorama mirror").

2. Several flat mirror surfaces are attached at different inclinations next to one another or one above the other.

Such rearview mirrors have the following disadvantages: λ To 1: The normal "panorama mirror" only covers small parts of the blind spot. Assuming that the curvature of the panoramic mirror were enlarged so that the "blind spot" would also be largely included, then the reduction would be so great that the traffic behind could no longer be properly observed.

Regarding 2: By attaching several flat mirror surfaces, the "blind spot" can be made largely ineffective. However, to do this, the driver must carry out several separate observations in individual mirrors. Combining and evaluating this multiple observation requires more intellectual work, than can be expected of the average driver.

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Claims (1)

The "blind spot" is largely defused by the invention. This is done by attaching the usual construction to the rear-view mirror on the left edge (from the point of view of the Driver) seamlessly adjoins a curved mirror surface, which gives an insight into sector 3a in Fig. 1. This sector corresponds approximately to the "blind spot]" (Sector 3 in Figure 1). The advantage that can be achieved with the invention is that the driver controls the "enemy" vehicle where he seeks it in the natural continuation of the rearview mirror image, namely on the left edge of the image. The traffic behind can still be clearly observed in the main part of the mirror. - For the vehicles that one In the area of the "blind spot" you just have to accept a slight distortion of the image. However, this is harmless, as these vehicles are not detailed and should be observed in special behaviors, but only need to be noticed as such. In principle, the shape of the mirror surface is irrelevant. 4 of the possible variants are shown in Fig. 2. Flat rectangular shapes with rounded corners are particularly suitable dete corners (Fig. 2a) to flat-oval shapes (Fig. 2b). Dimensions can only be given in rough areas: total width of the mirror (areas ρ + q): 10 cm to 20 cm Ratio of the widths of the area ρ to the area q: 0.3 to 1.0 1 1 curvatures in the range q: 0 — J to - ,. mm TpOO mm Curvatures in the range p ^ - ^ L ^ to The dimensions are not part of the claim. - £ β5β »· ΦΑη3 -provides The claim is based on the optical construction the rearview mirror, not including the attachment of the glass mirror in the frame or the overall mirror on the vehicle. The mirror is .. characterized in that its right-hand part comes from the View of the driver (area q in Figs. 2 and 3) has a weaker spherical convex curvature than his left part (area ρ in Figs. 2 and 3) and that both parts merge tangentially and seamlessly. The area q is used to observe the traffic behind you at a greater distance. It is usually flat (curvature = 0) 691667912.8.71 _ ₃ _ • ■ Claims The claim is based on the optical construction the rearview mirror, not the attachment of the glass mirror in the frame or the entire mirror on the vehicle. The mirror is. characterized in that its right part from the driver's point of view (area q in Figs. 2 and 3) is weaker is spherically convexly curved than its left part (area ρ in Figs. 2 and 3) and that both parts are tangential and seamless merge. The area q is used to observe the traffic behind at a greater distance. It is usually flat (curvature = 0). The purpose of the area ρ is to keep vehicles in the "dead" position for the driver The area ρ is normally flat in the y-z plane, but curved in the x-z plane (Main claim, Fig.3 u). Notwithstanding the main claim, the area q of the mirror according to the known "panorama mirrors" by a be marked spherically convex curvature (spherical section). The area ρ then retains the curvature of the in the y-z plane Area q at, but in the x-z plane it is more curved than area q. (Nelaen claim 1, Fig.3 v). Furthermore, the mirror can be characterized in that the curvature in the x-z plane from right to left (from the View of the driver) increases according to any mathematical law (e.g. cubic parabola or clothoid) (Fig. 3 w). The curvature in the x-z plane can also increase from right to left (from the driver's point of view) (secondary claim 2), however, it can also remain constant (ancillary claim 3). Combinations of the main claim and the secondary claims as well as from the secondary claims with one another are also possible (Additional claim 4 ·).