Spring devices – Vehicle – Mechanical spring and nonresilient retarder
Reexamination Certificate
2001-02-21
2002-06-04
Rodriguez, Pam (Department: 3613)
Spring devices
Vehicle
Mechanical spring and nonresilient retarder
C188S321110, C280S124147, C280S124155
Reexamination Certificate
active
06398202
ABSTRACT:
BACKGROUND AND SUMMARY OF THE INVENTION
The invention relates to a mounting for a shock-absorber strut or a pneumatic spring of a wheel suspension, mountings are disposed opposite to one another in bearing elements and the shock absorber strut is supported in the bearing element.
German Patent Documents DE 39 02 407 C1 discloses a mounting for a shock absorber of a wheel suspension at the vehicle body of a motor vehicle, which comprises bearing bolts, which are held at a fastening plate. At the same time, a wheel guiding element, which can be pivoted on the bearing bolts, is also held with the upper free end of the shock absorber. Furthermore, German Patent Document DE 196 25 106 A1 discloses a vibration damper or a suspension strut, the vibration damper of the suspension strut being fastened by means of an elastic bearing, on the one hand, at the vehicle body and, on the other, at the wheel guiding part. The upper free end of a piston rod of the vibration damper or the suspension strut is connected with a bearing element, which has radially outward protruding elastic mountings for fixing to a part of a vehicle body.
An object of the invention is to provide a mounting for an inclined shock absorber or a pneumatic spring, which ensures optimum suspension characteristics during the compression pneumatic expansion movements of the wheel and, moreover, can be combined with the body of the vehicle in a simple manner.
Pursuant to the invention, this objective is accomplished by bearing element, constructed as a bearing bushing disposed for an inclined shock-absorber strut and supported cardanically and/or pivotally over two bearing bolts lying on a common swiveling axis and wherein the bearing bushing is disposedly detached from a chassis sub-frame pivotably supporting a wheel suspension. Further advantages distinguishing features are contained in the dependent claims.
The main advantages, achieved with the invention, are that a shock absorber strut or a pneumatic spring, set at an angle to the transverse direction of the vehicle during compression and expansion movements of the wheel, can be swiveled freely or moved cardanically. For this purpose, the shock absorber is held with its free upper end in a bearing bushing, a supporting element being interposed. This bearing bushing comprises two bearing bolts, which are disposed opposite to one another on a swiveling axis and supported cardanically and/or so that they can swivel in a support fastened to the vehicle.
The constructional unit of the bearing bushing, supporting element and shock absorber forms a pre-assembled entity and can be connected in a simple manner with a cross member, fastened to the body of the vehicle. The spiral spring of the shock-absorber strut is held in the supporting element with at least one last winding fixed in an annular groove.
The supporting element is fastened in the bearing bushing between planar, corresponding connecting surfaces of the supporting element and the bearing bushing, the fastening being accomplished by bolts, rivets, gluing or a similar connection.
The bearing bushing is a pot-shaped depression, which is centrally disposed and into which a supporting bearing of the shock absorber protrudes or in which it is disposed.
According to a first embodiment, the bearing bolts of the bearing bushing are held in each case in elastic elements, which can be fixed by means of a bearing bushing to a cross member of the vehicle. For this purpose, the cross member may have semi-circular recesses, the counter-piece being a semi-circular bent clamp.
The bearing bushing is connected over bearing bolts, which are embraced in each case by a clamp, with a cross member of the vehicle body. This cross member is disposed above and detached from a chassis sub-frame accommodating the wheel suspension.
According to a further embodiment, the bearing bushing has accommodating boreholes for bearing sleeves, which are disposed opposite to one another and form a common swiveling axis, which is surrounded by an elastic sleeve element and fastened by means of a screw to the cross member. This embodiment has the significant advantage of a simple assembly and disassembly, since the horizontally supported screw bolts can be reached advantageously with one tool.
Instead of a shock-absorber strut, a pneumatic spring can also be held in the bearing bushing. In the absence of a supporting element, the pneumatic spring can be supported at and fastened directly to a cylindrical sleeve at the planar connecting surface of the bearing bushing. This connecting surface is constructed as a continuous annular surface.
Examples of the inventions are described in greater detail in the following and shown in the drawings in which
REFERENCES:
patent: 2823927 (1958-02-01), Goby
patent: 2888269 (1959-05-01), Hogsten
patent: 2935334 (1960-05-01), Felts
patent: 4318551 (1982-03-01), Shay et al.
patent: 4332397 (1982-06-01), Steger
patent: 4750755 (1988-06-01), Hayashi et al.
patent: 4778198 (1988-10-01), Gold
patent: 4957307 (1990-09-01), Gandiglio
patent: 4974872 (1990-12-01), Riese
patent: 5382044 (1995-01-01), Smith et al.
patent: 5536035 (1996-07-01), Bautz et al.
patent: 5560638 (1996-10-01), Lee
patent: 32 33 878 (1984-03-01), None
patent: 39 02 407 (1990-05-01), None
patent: 44 36 599 (1996-04-01), None
patent: 196 25 106 (1998-01-01), None
Crowell & Moring LLP
Dr. Ing. h.c.F. Porsche AG
Rodriguez Pam
Sy Mariano
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