Land vehicles – Wheeled – Articulated vehicle
Patent
1991-07-24
1993-09-07
Focarino, Margaret A.
Land vehicles
Wheeled
Articulated vehicle
2804915, 403317, B60D 152
Patent
active
052421864
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a coupling device according to the preamble of claim 1.
The coupling device according to the invention is preferably intended to be used for coupling a trailer or similar structure to a motor vehicle, such as a passenger car.
2. Discussion of the Background
Through Swedish patent specification 8400369-8 a coupling device of the kind stated by way of introduction is known. This known coupling device has turned out to be safe and reliable in practice. Another similar coupling device is known through EP 0160934.
The object of the present invention is to improve and simplify a coupling device of the kind stated by way of introduction.
SUMMARY OF THE INVENTION
This object has been attained in that the coupling device according to the invention has obtained the features stated in claim 1.
The invention will now be described more closely below with reference to the attached drawings, in which
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 in a side view shows the coupling portion of a first embodiment of the coupling device according to the invention,
FIG. 2 shows the coupling portion according to FIG. 1 in a view from above,
FIG. 3 shows the coupling portion according to FIGS. 1 and 2 in an end view in the direction of arrows III--III in FIG. 1,
FIG. 4 shows a sectional view through the same coupling portion in the direction of arrows IV--IV in FIG. 2,
FIG. 5 is a side view showing an attachment portion associated with the coupling portion according to FIGS. 1-4,
FIG. 6 shows the attachment portion according to FIG. 5 in the direction of arrows VI--VI in FIG. 5,
FIGS. 7a-e show sectional views taken in the direction of arrows VII--VII in FIG. 2 and illustrate succesive steps in disconnecting the coupling portion according to FIGS. 1-4 as well as the attachment portion according to FIGS. 5, 6,
FIGS. 7e-i show similar sectional view which illustrate succesive steps in connecting together the same coupling portion and attachment portion,
FIG. 8 shows a similar sectional view as in FIG. 7 but more in detail and shows the associated parts when the coupling device takes the same coupling position as in FIGS. 7a and 7i,
FIG. 9 is a side view showing the mutual position of the coupling portion and the attachment portion in connection with the transfer steps from FIG. 7d to 7e or the transfer steps from FIG. 7g to 7h, and
FIGS. 10-12 shows side views illustrating three succesive steps in connecting the coupling portion to the attachment portion in a second embodiment of the coupling device according to the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The embodiment of the coupling device according to the invention shown in FIGS. 1-9 includes an attachment portion generally designated by reference number 2. The attachment portion 2 consists of a round bar 4 around the periphery of which a groove 6 extends at a distance, more closely defined below, from the left hand end in FIG. 5. To the right of the groove 6 in FIG. 5 it is illustrated how the round bar 4 by means of welds, indicated by reference number 8, carries mounting plates 10, by means of which the attachment portion 2 is attached by means of bolts, of which one is indicated at 12, to a rear vehicle beam, indicated in section by reference number 14. Elements 8-14 only serve as examples of illustration of how the attachment portion 2 can be attached to a vehicle, and are of course adapted to the type and kind of the vehicle.
The left hand end of the bar 4 in FIG. 5 is bevelled at 16. On one of its sides the bar 4 at a distance from the groove 6, discussed in greater detail below, has a hole 18, the shape and depth of which appears from some of the views in FIG. 7. A bevel 19 connects to the mouth of the hole 18, as shown in FIGS. 5 and 7c. On the diametrically opposite side the bar 4 has a plane bevel 20 extending between the bevel 16 and the groove 6 and has the same depth as the latter.
The coupling device according to the first embodiment also includes a coupling po
REFERENCES:
patent: 4388012 (1983-06-01), Erickson
patent: 4613149 (1986-09-01), Williams, Jr.
patent: 5000474 (1991-03-01), Kristensen
Focarino Margaret A.
Mattix C.
VBG Produkter AB
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