Patent Application
20060113137
1. Field of the Invention
This invention relates to a two-wheel drive (2WD) motorcycle of belly roll type and particularly to a two-wheel drive (2WD) motorcycle of belly roll type simultaneously driving its front and rear wheels to roll and keeping its belly from being seized on a higher inclined slope which it passes through.
2. Description of the Prior Art
A conventional motorcycle runs by rear wheel drive and runs on a general road without problems causing; however, a special cross-country racing motorbike races in an open country or a special cross-country gymkhana instead of the general road, and thus when the motorcycle of rear wheel drive races in the fields, quite many problems occurs—for example, when running on sands or a stony path, due to a main power from the rear wheel, the motorcycle cannot get out of the sands or the stony path by itself if its idle running results from a skid of the rear wheel, and further the rider will easily fall over and hurt; further, when the motorcycle runs up the higher inclined slope, its belly is easily seized at an included angle between the slope and a plane to damage the motorcycle and endanger the rider due to the front wheel having passed the slope but the rear wheel still running on the slope.
Thus, it can be seen that the conventional product has none the less many defects, so it is not a good design so as to urgently improve.
In consideration of the various defects derived from the conventional 2WD motorcycle of belly roll type, this inventor further improves it and finally successfully develops the 2WD motorcycle of belly roll type according to this invention after having made extraordinarily painstaking efforts to study the motorbike diligently with a quiet mind for many years.
This invention is to provide a 2WD motorcycle of belly roll type simultaneously driving its front and rear wheels to roll.
This invention is next to provide a 2WD motorcycle of belly roll type keeping its belly from being seized on a higher inclined slope that it passes through.
For that purpose mentioned above, the 2WD motorcycle of belly roll type comprises:
a motorcycle on which a clutch control handle is provided to join a drive gear of an engine installed on the motorcycle for control to a clutch;
a hydraulic pump on which a high-pressure fuel feed hose is provided to connect with a hydraulic motor, the fuel feed hose being provided with a back pressure valve and a directional control valve;
a hydraulic motor provided at a side of the front wheel of motorcycle and connected to a wheel axle of the front wheel, the hydraulic motor being provided with a low-pressure fuel feed hose connected to a fuel tank;
a fuel tank on which a hydraulic hose is provided to connect with the hydraulic pump;
a roller device formed with a block and several rollers, a bottom of the block being upward concaved with a container portion, a top of the bottom being provided with several locking portions, and a side of the block being formed with several piercing holes piercing through two walls of the block; central axis at two sides of each roller being protruded with a roller axis; each roller being allowed in the container portion of the block and piercing through the piercing holes at two sides of the walls of the block according to the roller axis.
The drawings disclose an illustrative embodiment of the present invention which serves to exemplify the various advantages and objects hereof, and are as follows:
Referring now to
a motorcycle 1 on which a clutch control handle 14 is provided to join a drive gear 12 of an engine 11 installed on the motorcycle 1 for control to a clutch 13;
a hydraulic pump 2 on which a high-pressure fuel feed hose 21 is provided to connect with a hydraulic motor 3, a back pressure valve and a directional control valve 22 being provided at a side of the high-pressure fuel feed hose 21 adjacent to the hydraulic pump 2;
a hydraulic motor 3 provided at a side of a front wheel 15 of the motorcycle 1 and connected to a wheel axle of the front wheel 15; a top of the hydraulic motor 3 being provided with a directional control valve 31 and further a fuel outlet of the hydraulic motor being provided with a low-pressure fuel feed hose 31 to connect with a fuel tank 4; a fuel filter being provided at a joint between a low-pressure fuel feed hose 32 and the fuel tank 4;
a fuel tank 4 on which a hydraulic hose 41 is provided to connect with the hydraulic pump 2, a back pressure valve 5 being provided at a side of the hydraulic hose 41 adjacent to the fuel tank 4;
a roller device 7 formed with a block 71 and several rollers 75, a bottom of the block 71 being upward concaved with a container portion 72, a top of the block 71 being provided with several locking portions 73, a side of the block 71 being formed with several piercing holes 74 piercing through two walls of the block 71; central axis at two sides of each roller 75 being protruded with a roller axis 76; each roller 75 being allowed in the container portion 72 of the block 71 and piercing through the piercing holes 74 at two sides of the walls of the block 71 according to the roller axis 76, an exterior of each roller 75 being covered with a layer of colloid; further, the axis 76 of each roller 75 also being possibly formed with pivot hole 77, a pivot 9 being made to pierce through the piercing hole 74 of the block 71 and through the pivot hole 77 of the roller, thereby each roller 75 pivoting on the block 71.
Referring now to
Referring now to
In comparison with the case cited above as proof and with other conventional skills, the 2WD motorcycle of belly roll type according to this invention further has the following advantages:
Many changes and modifications in the above described embodiment of the invention can, of course, be carried out without departing from the scope thereof. Accordingly, to promote the progress in science and the useful arts, the invention is disclosed and is intended to be limited only by the scope of the appended claims.
