Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Including means to hold or retard hinged members against...
Reexamination Certificate
2001-02-01
2002-08-06
Mah, Chuck Y. (Department: 3626)
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Hinge
Including means to hold or retard hinged members against...
C016S374000
Reexamination Certificate
active
06427287
ABSTRACT:
FIELD OF THE INVENTION
Background Information
Door stop structurally combined with a door hinge for motor vehicle doors, the door hinge including of two hinge halves, each formed by a folded sheet metal part, and a hinge pin pivotably connecting the two hinge halves to one another, and one hinge half, having an essentially cap-shaped cross-sectional shape, engaging between the two profile legs of the other hinge half, which is of essentially U-shaped design, and wherein the hinge pin rests at one end on the outside of one profile leg of the other hinge half by means of a head part.
Door stops structurally combined with a door hinge and oriented coaxially to the hinge axis are conventionally known mainly in connection with hinges whose hinge halves are formed from solid moldings and are almost without exception designed as door stops placed on the upperside or underside of the hinge. They also include those designs of door stops which, although they are notable for a relatively small space requirement and can also be embodied in a plurality of more or less modified designs, require for that embodiment a substantial number of individual components that have to be produced and fitted separately. Such door stops are, moreover, principally suitable for use in connection with a sheet metal hinge, but fundamentally involve an excessive production expense and, at the same time, various uncertainties regarding the sustainable maintenance of predetermined holding positions of the doors. In addition, the number of components necessary for the door stop as a whole results in an increased probability of a clash between disadvantageous tolerance pairings and hence, naturally, the increased occurrence of noise sources within the door stop attributable to disadvantageous tolerance pairings.
Motor vehicle door hinges already equipped with an integrated door stop are also previously known, the hinge comprising a first and a second hinge half and a hinge pin consisting of solid material and the two hinge halves being designed as solid moldings. Here, the hinge pin is conventionally secured, such that it cannot rotate, in the gudgeon of one hinge half and, at least over part of its lengthwise section which engages in the gudgeon of the other hinge half, is equipped with a circulatory pattern of its cross section which deviates from the purely circular shape and to which a configuration of complementary design, again of at least part of the gudgeon hole of the other hinge, is assigned. This known design of the integrated door stop is admittedly notable, irrespective of its particular individual configuration, for dispensing with additional components, but requires a very high finishing and treatment expense, especially for forming and hardening, and for coating of the mutually interacting surfaces of the braking and holding device of the stop. This is particularly the case because the surfaces to be processed and treated are disposed within the hinge half, which is designed as a solid molding, and it is therefore always necessary for the entire hinge half to be subjected to the treatment. In addition, none of the known constructions of door stops that can be integrated into a motor vehicle door hinge permit application in conjunction with an inexpensive sheet metal hinge.
In view of the particular processing expense for door stops that can be integrated into a motor vehicle door hinge, a serious disadvantage, common to all known constructions, is considered to reside in the fact that no standardization of the components of the door stop is possible.
GB-2 198 784 discloses a door hinge, especially for vehicle doors, having an elastic spring element 37 and a braking and holding device, consisting of a first hinge part 2 with U-shaped cross section, which is mounted on the bodywork, and a second hinge part 17 with a cap-shaped cross section which, engaging into the first hinge part 2, is pivotably mounted therein by means of a hinge pin 13, the braking and holding device being formed by the spring element 37 rotably mounted on the second hinge part 17 and a projection 42 projecting into its pivot region. The pivot movement of the second hinge part 17 secured on the door is limited, in the position where the door is completely open, by a stop 10 for the pivoted second hinge part 17, said stop being formed out to project inwards in the lateral leg of the U-shaped first hinge part 2 surrounding the second hinge part 17, while the projection 42 is curved forward from the base 4 of the first hinge part 2.
SUMMARY OF THE INVENTION
An object of the invention is to provide a door stop that can be integrated into a sheet metal hinge including two folded sheet metal parts and a hinge pin, which door stop is further characterized in that its components are standardized to the extent that at least one stop housing which can be produced and processed independently of the hinge can be used in a standard design for all sheet metal hinges employed.
In the door stop according the present invention, a stop housing which can be produced and processed independently of the hinge or of the two hinge halves as a molding or profile material is used, the rotational bearing of the surrounding hinge half and the stop device being accommodated in a stop housing disposed as a whole within the engaging hinge half, which half is having an essentially cap-shaped cross-sectional shape and is accommodating the stop housing in a rotationally secure manner. The use according to the invention of a stop housing which can be produced and processed independently of the other parts of the hinge makes it possible in the first place for a door stop to be integrated into a sheet metal hinge and then, additionally, also allows a very substantial standardization of the door stop to be integrated into a sheet metal hinge, especially to the extent that uniformly prefabricated stop housings can be simply inserted into sheet metal hinges of any desired design. The securing of the stop housing on the hinge half can take place in any desired manner best suited to the particular application, so that from this standpoint also an optimum standardization solution is provided.
In a preferred embodiment of a sheet metal hinge equipped with an integrated door stop, provision is made such that the braking and holding device of the door stop comprises a lengthwise section of the hinge pin having a profile cross section deviating from the purely circular shape and a lengthwise section of the stop housing having an internal peripheral wall with a complementary non-circular design and is disposed as a whole centrally between two rotational bearings of the hinge in the stop housing, so that the stop housing and the hinge pin each possess a bearing section having a cylindrical cross-sectional shape on both sides of the braking and holding device of the door stop.
A particularly advantageous embodiment for the purposes of the most extensive standardization of door stops that can be integrated into a sheet metal hinge further provides that the hinge pin, starting from its head part, has a multistep variation of its diameter over its length, a first diameter being assigned to the near-side rotational bearing of the hinge pin in the stop housing, a first diameter variation being assigned to the formation of the braking and holding mechanism, second diameter variation being assigned to the far-side rotational bearing of the hinge pin in the stop housing and, finally, a further diameter variation being assigned to the fixing of the hinge pin in the profile leg of the other, surrounding hinge half.
In connection with a hinge pin equipped in this way, for easier assembly, with a plurality of different diameter variations consecutively stepped in the direction the hinge pin is driven in, a standardized configuration of the stop housing then additionally arises from the fact that the two cylindrical bearing recesses of the stop housing are of the same diameter as each other and a compensatory bushing compensating for the difference between the overall width of the bearing r
Brueckner Lothar
Franke Dietmar
Kirsten Uwe
Magnus Nils
Davidson Davidson & Kappel LLC
Ed. Scharwaechter GmbH
Mah Chuck Y.
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