DE4205806A1 - Motor cycle combination with sprung rear wheel - has side car attached to lateral extension of the rear forks. - Google Patents

Abstract

A combination motor cycle and side car has a main frame (4) in which the engine (8) is mounted. The rear wheel (5) is supported in a fork (1a) which forms part of secondary frame (1). The secondary frame (1) is pivoted to the main frame by bearings (2,3) and supported by a compensating rod (2a) and a guide rod (7). The outer ends of the fork (1a) are supported by springs (10). The main frame (4) extends laterally to support the side car and the secondary frame (1) has a lateral extension to which the side car wheel (6) is attached. USE/ADVANTAGE - Motor cycle combination with spring suspension for side car. The spring suspension provides a more comfortable ride.

Description

The subject of the invention is a rear wheel and side wheel suspension for motorcycles with sidecars that tilt the movement of the vehicle around the longitudinal axis of the vehicle Driving over bumps reduced.

In known motorcycles with sidecars, this is sides rad at a distance of 200 to 500mm, the so-called Forward, attached in front of the rear wheel. This is necessary um, with recnts attached sidecar in left turns, with the sidecar attached on the left in right-hand bends Tilting the team over the front part of the sidecar to prevent. It also belongs to the state of the art, that the frame for motorcycle and sidecar from one Piece can exist.

The rear wheel of the motorcycle is pulled by a long swing arm or from a telescopic straight-line suspension guided. The side wheel is pulled by a ge pushed long or short swingarm, from a wishbone Swing arm or guided by a semi-trailing arm long swing arm.

This design has several disadvantages.

When driving over a bump, the springs spring one after the other Front wheel of the motorcycle, the side wheel of the sidecar and the rear wheel of the motorcycle. Due to the low The forward of the side wheel in front of the rear wheel gets the Ge spanned two lanes in a row  from different sides, the first from the side wheel the side of the sidecar, the second from the rear wheel on the Motorcycle side. This will cause a tilting movement around the Longitudinal axis of the vehicle, which causes the team can sway. Especially in long drawn out Curves affect the tracking of the team is pregnant. When using a drawn long swing arm to guide the rear wheel and also a towed one Long swingarm for guiding the side wheel can do this effect reduced by using a cross stabilizer will. However, this anti-roll bar reduces that sensitive response of the suspension of the side wheel and Rear wheel and can cause on a pothole series that the two interconnected spring systems no longer have time to rebound and go on block.

The task is to mount the rear wheel and sides to design a bike of a motorcycle with sidecar the tilting movement around the vehicle's longitudinal axis reduced when driving over bumps and so the Improved roadholding without the response behavior of the Fe change.

The object is achieved in that a long rocker arm ( 1 a), which guides a rear wheel ( 5 ), with a wishbone ( 1 b), which guides a side wheel ( 6 ), is firmly connected to a combination rocker arm ( 1 ). A side wheel ( 6 ) facing away from the swing arm bearing ( 2 ), which is designed so that it allows movements in several directions, for. B. as a ball joint, is attached to a by means of a compensating arm bearing ( 2 b) movably mounted on a frame ( 4 ) compensating arm ( 2 a) and connects the Langschwin ge ( 1 a) articulated with the frame ( 4 ). A side wheel ( 6 ) facing sidecar-side swing bearing ( 3 ), which is also designed so that it allows movements in several directions, for. B. as a ball joint, ver binds the combination rocker ( 1 ) in the area in which the long rocker ( 1 a) and the wishbone ( 1 b) are connected to each other with the frame ( 4 ). The side wheel ( 6 ) is guided with a guide rod ( 7 ), which connects the wishbone ( 1 b) to the frame ( 4 ) in the longitudinal direction. The wheel elevation curve of the side wheel ( 6 ) can be influenced by deflection by appropriate inclination and dimension of the guide rod ( 7 ). Suspension struts ( 10 ) support the long swing arm ( 1 a) and the wishbone ( 1 b) against the frame ( 4 ).

If the team drives over a bump, first the side wheel ( 6 ) and with it the wishbone ( 1 b) is raised. Since the sidecar-side swing arm bearing ( 3 ) is designed in such a way that it enables movements in several directions, part of the movement is transferred to the long swing arm ( 1 a), the compensating arm ( 2 a) with the swing arm bearing ( 2 ) makes a compensatory movement. Then the rear wheel ( 5 ) and with it the long rocker arm ( 1 a) is raised, so the side wheel swing arm bearing ( 3 ) enables the transmission of part of the movement to the wishbone ( 1 b). Here, too, makes the balance arm (2 a) with the outer-side swing bearing (2) a compensation movement.

The proposed combination swing arm has the following advantages: The tilting movements about the longitudinal axis of the vehicle when driving over a bump are mitigated because the suspension movements of the side wheel ( 6 ) and rear wheel ( 5 ) pass smoothly into one another. This reduces the risk of the vehicle rolling, without the response behavior of the spring struts ( 10 ) being impaired.

The invention is explained with reference to some drawings. Show it:

Fig. 1 top view of the complete combination swing arm ( 1 ) with side wheel ( 6 ) and rear wheel ( 5 ).

Fig. 2 side view of the long swing arm ( 1 a) with the rear wheel ( 5 ) and the outside swing bearing ( 2 ).

List of reference symbols in the figures

1 combination rocker
1 a long swing arm
1 b wishbone
2 Outside swing arm bearing
2 a compensation arm
2 b Balance arm bearing
3 swing arm bearing on the side car side
4 frames
5 rear wheel
6 side wheel
7 guide rod
7 a Guide rod mounting on the frame
7 b Guide rod mounting on the wishbone
8 engine block
9 rear wheel drive
10 shock absorber
11 Adjustment device for camber and toe-in

Claims (1)

A wheel suspension for the rear wheel and side wheel of a motorcycle with sidecar is to be protected, characterized by the following features:

• - A long swing arm ( 1 a), which leads a rear wheel ( 5 ), and a wishbone ( 1 b), which guides a side wheel ( 6 ), are firmly connected to each other to form a combination swing arm ( 1 ).
• - A side wheel ( 6 ) facing away Schwin gene bearing ( 2 ), which is designed so that it allows movements in several directions, is via a with a compensating arm bearing ( 2 b) movable on a frame ( 4 ) attached compensating arm ( 2nd a) articulated to the frame ( 4 ).
• - One of the side wheel ( 6 ) facing sidecar-side swing arm bearing ( 3 ), which is designed so that it enables movements in several directions, connects the combi-arm ( 1 ) in the area in which the long rocker arm ( 1 a) and the control arm ( 1 b) are connected to each other with the frame ( 4 ).