Land vehicles: bodies and tops – Bodies – Glare screen or visor
Patent
1993-06-18
1995-10-03
Pike, Andrew C.
Land vehicles: bodies and tops
Bodies
Glare screen or visor
296 975, 296 979, 296 9712, B60J 300
Patent
active
054546168
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a sun visor for automobiles and in particular to a sun visor produced by blow molding of a plastic material.
Automobiles sun visors produced by blow molding of a plastic material, for example polyethylene, are well known. These sun visors may comprise, like the visors based, for example, on a net structure, the so-called vanity mirror, which is usually arranged in the passenger side sun visor, and which may simply be superimposed on the corresponding side of the sun visor or be attached thereto by a cavity prepared for such purpose.
Further to the vanity mirror, the sun visors generally comprise a retaining spring and a hanging bridge situated in corresponding ends of the sun visor. The purpose of the retaining spring is to receive the pivot pin of the bent support attached to the vehicle structure so that, when engaged, the sun visor may be moved about the pivot pin by a simple manual operation and occupy stable positions of use freely selected by the user. The hanging bridge may be engaged, in turn, to a support member also attached to the vehicle structure so that, once engaged, they provide the sun visor with an auxiliary point of support which helps to withstand possible mechanical overloads capable of affecting the engagement of the retaining spring and the pivot pin of the bent support and weakening their resistance to untimely movement.
As an example of a sun visor manufactured from a one-piece hollow body member blow molded from a plastics material comprising the above mentioned elements, there may be mentioned Spanish patent P 9100391. This patent describes a sun visor with the hollow body member formed at one end thereof with a through orifice defining a hanging bridge and which internally houses and retains at the opposite end a retaining spring which is accessible from the outside of the sun visor only through a pertinent opening.
In general, the sun visor hollow body members formed by blow molding of plastics materials have a limited mechanical strength, which, under normal conditions of use, easily causes deformation. To avoid this drawback, the hollow body members are generally provided with additional structural reinforcement members. In this regard, there may be mentioned those provided by said Spanish patent P 9100391 consisting basically of a filling contained inside said body member. The filing is formed by an appropriate plastics material, such as polyurethane. The filling of the one-piece hollow body member by plastics materials to increase the mechanical strength thereof and avoid deformation under normal conditions of use suffers as the main drawback from a high production cost which, obviously, makes the finished product more expensive.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an automobile sun visor which eliminates the above discussed disadvantages and in particular eliminates high financial costs of additional structural reinforcement means.
In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in an automobile sun visor of the above mentioned type in which larger facing internal sides of a one-piece hollow body member of the sun visor are formed with a plurality of reinforcing ribs which are dimensioned so that free ends of the reinforcing ribs bear against an opposite side, and the ribs are distributed depending on the dimensions and contour of the sun visor acting as a structural reinforcement and avoiding under normal conditions of use deformation of the hollow body member.
When the automobile .sun visor is designed in accordance with the present invention, it avoids the disadvantages of the prior art and provides highly advantageous results in reducing the cost of reinforcing means.
According to one characteristic embodiment of the invention, the reinforcing ribs are formed facing each other on both sides of the hollow body member and are dimensioned in such a way that
REFERENCES:
patent: 4494789 (1985-01-01), Flowerday
patent: 4773699 (1988-09-01), Cebollero
patent: 5054839 (1991-10-01), White et al.
Aymerich Jose
Prat Jesus
Industrias Techno-Matic S.A.
Pike Andrew C.
Striker Michael J.
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