FR2653402A3 - Motor bike fork with axial wheel removal - Google Patents

Abstract

Telescopic fork for a motor bike, two-wheeler or tricycle making it possible to fit and remove the wheel axially. The invention consists in placing the wheel axle so that it overhangs from the fork sleeve or sleeves. The sleeve or sleeves are on one side of the wheel. The device according to the invention is particularly intended for motor cycles having bulky brakes, and for motor bikes for endurance race competition.

Description

 The present invention relates to the suspension and steering unit carrying the front wheel of a motorcycle or 2 wheels or tricycle, allowing the lateral disassembly of the wheel, and which can replace without structural modification of the frame and without any machining thereof, the traditional fork which is there for the motorbikes which are equipped with it.

 This invention being intended to be mounted on already finished machines, just as much as on machines in production, we will not compare this innovation with the telescopic fork universally chosen by major manufacturers worldwide. So currently a fork is composed of a steering column guiding in rotation 2 "Tees", lower and upper on which are maintained 2 tubes.Rz end of these tubes, are 2 sleeves quidés on ceum-ci.k inside or outside the tubes / sleeves are the spring / shock absorber (s). At the end of these sleeves is an axle on which the front wheel is mounted, this axle crosses the two sleeves. Disassembly of the wheel therefore requires remove this axis, then pull the wheel out of the tubes. stirrups.

 The device according to the invention consists in mounting a wheel axle in cantilever on 2 tubes / sleeves, or on a single tube / sleeve equipped with a connection preventing rotation of one by contribution to the other.

 As for traditional forks these tubes or sleeves, since we can mount the tubes at the top and the sleeves at the bottom, or the opposite, will be linked to 2 Dice having a steering column, also linked to them, For the fork to a single tube / sleeve guidance system, provision will be made for the tube or sleeve member to stop rotating, depending on which one has chosen to mount on the Tees.

 The combined spring / damper can be located inside the tubes / sleeves, be confused there, in case the tube / heavy elements are part of the combined, or be outside by means of a connecting member. The combined can be alone or doubled, the spring can be separated from or combined with the shock absorber.

 The part which will support the wheel axle (Tubes or sleeves, double or mono) may or may not support the braking members.

 According to a preferred embodiment, the fork will consist of a single tube / sheaths with rotational connection, of the sheath sliding on the tube, and the tube on the 2 tees. The combined spring / damper will be mounted outside.

 Figure 1 shows the device according to the preferred embodiment. It has 2 tees (1) and (2) with a column (3) linked in rotation with one or more tees and are mounted on the leoeadre (4) of the new or old motorcycle. The tube (5) linked in translation and in rotation on the two tees. The sleeves (6) guided in translation on the tube (5) and linked in rotation on the latter. At the end of the sleeve is an axis fully connected with it.

The wheel (7) will be mounted on this axis. We understand by wheel the assembly, whether or not composed of the rim, plus the bearings, connecting members, ... etc ... And we also have a spring / damper combination ( 8) mounted between a tee and the sheath;

Claims (3)

CLAIM  1) Motorcycle fork system, 2 wheels, or tricycle having a wheel axle in false door, allowing to mount or dismount the wheel axially. This system is characterized in that, the wheel axle is mounted on a tube ( 5) That two, that this or these tubes are guided on one or two sleeves (6) in translation, sleeves which are linked on one or two tees (1) and (2). With this system of @@ guidance will be associated one or more springs and dampers combined or not, and mounted in a conventional manner.  2) System according to claim 1 characterized in that the tube or tubes can be linked to a '~ t'esj or two, and that the sleeve (s) will be guided on the tube (s).  3) System follow claim (1) and claim (2) characterized in that in the case where the guiding in translation is done by a single tube, the tube will be linked in rotation on the sleeve.