Motor vehicles – Bodies – Movable cab or operator's station
Patent
1993-11-02
1995-03-21
Tyson, Karin L.
Motor vehicles
Bodies
Movable cab or operator's station
296190, B62D 33067
Patent
active
053987748
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an end stop arrangement for defining an upper end position and a lower end position of a vehicle cabin, which cabin is spring supported on a vehicle frame and tippable from a normal operating position to a displaced position.
BACKGROUND OF THE INVENTION
From SE-B-8503890-9 it is known to provide an end stop for a tippable vehicle cabin, which is spring mounted via link arms on the vehicle frame. The end stop consists of a rod with damping elements located on either side of an abutment flange on the frame. The known end stop is one example of a device which results in a limiting of the cabin's sprung movements, and in addition allows tipping of the cabin.
SUMMARY OF THE INVENTION
The object of the present invention is to obtain an end stop, which can be dimensioned for an optimal movement limiting without requiring provision for the tipping movements.
The above object is achieved in accordance with the present invention by an end stop arrangement for defining an upper end position and a lower end position of a vehicle cabin, which cabin is spring supported on a vehicle frame and tippable from a normal operating position to a displaced position, whereby the cabin is articulately connected to the frame by means of a link arm having a first end and a second end, said first end being pivotally supported in the frame and said second end being pivotally supported in a fixture on the cabin, wherein a stop arm extends from said fixture to an area below the link arm, said stop arm presenting damping elements for movement-damped abutment in said lower end position against a fixed lower abutment surface arranged on the frame, and in said upper end position against an upper abutment surface arranged on an underside of the link arm.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be described in more detail with reference to an embodiment and to the accompanying drawings, in which
FIGS. 1-3 show schematically a suspension of a vehicle cabin with an end stop according to the present invention in different operating positions, whilst
FIG. 4 shows the cabin in tipped position,
FIGS. 5-7 show, on an enlarged scale, a longitudinal section through the cabin suspension with the end stop according to the invention in different operating positions, whilst
FIG. 8 shows the suspension with a tipped cabin.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The cabin suspension will first be described in its entirety with reference mainly to FIGS. 1, 2 and 3, in which a vehicle cabin 1 is schematically shown which is supported by a vehicle frame 3 via a link arm suspension 2. For the sake of clarity, only the cabin's front suspension is shown, whilst its rear suspension has been totally omitted. This can be of a per se conventional type with springs and shock absorbers in both the rear corners, whilst the front suspension 2 can likewise be arranged in each corner, i.e. the front corners of the cabin. In each corner the front suspension presents a link arm 4, whose one end 5 is pivotally supported on the frame 3 and whose rear end is pivotally supported in a fixture 7 on the cabin 1 in the form of a bracket for example. The cabin is supported by springs and shock absorbers be means of a combined spring- and shock absorbing unit 8, which is arranged in each of the front corners and is fixed between the cabin and the frame. The suspension further presents an end stop 9 which is arranged to limit the cabin's sprung movement between an upper and a lower end position. The end stop includes a lower abutment surface 10 on the frame which is formed from a plate projecting from said frame, also called the bump-stop plane. The end stop's other parts are described in more detail below with reference to FIGS. 5-8.
Of the different possible positions for the cabin and its suspension, FIG. 1 shows an intermediate position, in which neither of the end positions has been reached, FIG. 2 shows a lower end position for the cabin and its suspension relative to the frame, which is also ca
REFERENCES:
patent: 4735272 (1988-04-01), Sjostrom et al.
Ljungholm Bengt
Nilsson Nils
AB Volvo
English Peter C.
Tyson Karin L.
LandOfFree
End stop arrangement for a vehicle cabin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with End stop arrangement for a vehicle cabin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and End stop arrangement for a vehicle cabin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1143565