Brakes – Wheel – One-way brakes
Patent
1993-11-05
1995-08-15
Oberleitner, Robert J.
Brakes
Wheel
One-way brakes
192 451, F16D 6300
Patent
active
054411300
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to apparatus for preventing backlash of a vehicle transmission, particularly to a magnetic apparatus for preventing backlash of a transmission wherein a stationary driving shaft gear can smoothly mesh with another gear mounted on a passive shaft. Because of low noise, the apparatus can be used for a super-high speed rotating apparatus.
BACKGROUND OF THE INVENTION
At the present time, a backlash-preventing bearing used for a vehicle transmission such as a roller clutch, over running clutch, etc., can be rotated in only one direction, but not in the opposite direction. The bearing prevents backlash appropriately in a gear assembly wherein the driving shaft gear is fixed to mesh with the passive shaft gear.
However, when the gear on a stationary passive shaft meshes with the driving shaft gear, the probability that the driving gear will mesh with the passive gear to rotate is approximately even to the probality that it will mesh with the passive gear not to rotate.
That is, when the stationary passive gear meshes with the driving gear, the teeth of the passive gear and the teeth of the driving gear will not always mesh exactly. Sometimes each gear is met with the free ends of teeth so that the power cannot be transmitted from the driving gear to the passive gear.
The above problem occurs because there is no relative clearance for movement between the driving gear and the passive gear. Whether or not the teeth of the gears mesh depends on the conditions of the mating of the teeth.
Therefore, in the backlash-preventing apparatus of the prior art constructed as above, it is difficult for the gear teeth exactly mesh with each other when the passive gear stops. When the high speed rotation of the driving gear, and the severe friction between the backlash-preventing gears and driving gear generate serious noise, prior art apparatus cannot be used for a super high speed rotating apparatus.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a magnetic apparatus for preventing backlash of a transmission, which positively prevents the backlash of the transmission and which can be adapted to various power transmission apparatus, i.e, motorcycles, automobiles, ships, etc.
Another object of the current invention is to provide a backlash preventing magnetic apparatus for a transmission having a gear assembly mounted on the driving shaft and a passive shaft which can effectively mesh under any conditions, and can be used for super high speed rotating assembly due to little noise.
With the above objects in view, the backlash preventing magnetic apparatus in accordance with the present invention comprises a plurality of projections formed on a circumferential surface of the inner or outer races of a transmission. A plurality of rotating bodies are disposed between said outer race and said inner race so that said rotating bodies can be combined with said projections. A permanent magnet is mounted on said rotating bodies and a backlash-preventing roller is disposed respectively between said rotating bodies.
Thus, when said driving shaft rotates clockwise, said rotating bodies and said backlash-preventing roller disposed between the outer race and the inner race rotates in the same direction by means of said projections. But when said driving shaft rotates counter clockwise by means of a negative load, said backlash-preventing roller is pushed into a narrow space between the outer race and the inner race. Therefore, said backlash-preventing roller functions as a key between the outer race and the inner race. Thus, said inner race cannot rotate backward so that the backlash of the transmission can be finally prevented.
Further scope of appliability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and mo
REFERENCES:
patent: 3718212 (1973-02-01), Havranek
patent: 3942616 (1976-03-01), Elmore
patent: 3994377 (1976-11-01), Elmore
patent: 4106602 (1978-08-01), Dieckermann
patent: 5156246 (1992-10-01), Iga
patent: 5275261 (1994-01-01), Vrianish
Bartz Clifford T.
Meller Michael N.
Oberleitner Robert J.
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