US 5,682,793 AGranted

Engaged rotor

OwnerZhenyi Liaoinventor

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Abstract

The present invention relates to a pair of meshed involute gears one of which has work teeth, their tooth-tip circle is larger than that of the said gear, the other has the grooves engaged with the said working teeth. The working teeth and the grooves have the same characters of equal periphery of meshing and rotating as the said involute gears. This composite construction of the gear named "the meshing type rotors" can be used in making internal combustion engine, fluid (liquid or gasous) pump and motor, vacuum pump, conditioner/refrigerator/compressor and hydraulic variator.

Claims6

Dependent claims

An engaged rotor mechanism comprising:

a casing;
an engaged wheel disposed within said casing and having a plurality of involute teeth and at least one engaged tooth groove disposed about an excircle circumference thereof, said at least one engaged tooth groove having a depth greater than a height of said involute teeth;
a working wheel disposed within said casing and engaging said engaged wheel, said working wheel and said engaged wheel rotating within said casing, said working wheel having a plurality of said involute teeth and at least one working tooth disposed about an excircle circumference thereof, said at least one working tooth having a height greater than said height of said involute teeth, said at least one working tooth of said working wheel meshing with said at least one engaged tooth groove of said engaged wheel during rotation of said wheels, and said involute teeth of each of said wheels meshing with said involute teeth of the other of said wheels during rotation of said wheels;
said at least one working tooth of said working wheel having a shape defined by the following function formula:
##EQU41## said working tooth having an addendum thickness, wherein a curve of said addendum thickness is defined by a circular arc corresponding to the included angle 2.PSI. and with said circular arc having a center corresponding to a center of said working wheel and a radius equal to R.sub.2, said circular arc being defined by the following formula:
##EQU42## wherein in the above equations, "R.sub.a " stands for the radius of the reference circle of the involute tooth on Wheel A;
"R.sub.b " stands for the radius of the reference circle of the involute tooth on Wheel B;
"R.sub.2 " stands for the radius of the addendum circle of the working tooth on Wheel A;
"R.sub.b1 " stands for the radius of the addendum circle of the involute tooth on Wheel B;
"a" stands for the distance between the intersection point of the line past Point "R.sub.d " perpendicular to Line O O' and the point of tangency of Circle R.sub.a with Circle R.sub.b ;
"i" stands for the gear ratio;
".PSI." stands for the semiangle of the working tooth addendum thickness;
".theta." stands for a set constant;
"n" stands for n=0,1,2, . . . k, in which "k" is a natural number;
".alpha." stands for ##EQU43## ".beta." stands for ##EQU44##

12 more elements

Dependencies are inferred from the claim text.

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Abstract

An engaged rotor mechanism comprising:

a casing;
an engaged wheel disposed within said casing and having a plurality of involute teeth and at least one engaged tooth groove disposed about an excircle circumference thereof, said at least one engaged tooth groove having a depth greater than a height of said involute teeth;
a working wheel disposed within said casing and engaging said engaged wheel, said working wheel and said engaged wheel rotating within said casing, said working wheel having a plurality of said involute teeth and at least one working tooth disposed about an excircle circumference thereof, said at least one working tooth having a height greater than said height of said involute teeth, said at least one working tooth of said working wheel meshing with said at least one engaged tooth groove of said engaged wheel during rotation of said wheels, and said involute teeth of each of said wheels meshing with said involute teeth of the other of said wheels during rotation of said wheels;
said at least one working tooth of said working wheel having a shape defined by the following function formula:
##EQU41## said working tooth having an addendum thickness, wherein a curve of said addendum thickness is defined by a circular arc corresponding to the included angle 2.PSI. and with said circular arc having a center corresponding to a center of said working wheel and a radius equal to R.sub.2, said circular arc being defined by the following formula:
##EQU42## wherein in the above equations, "R.sub.a " stands for the radius of the reference circle of the involute tooth on Wheel A;
"R.sub.b " stands for the radius of the reference circle of the involute tooth on Wheel B;
"R.sub.2 " stands for the radius of the addendum circle of the working tooth on Wheel A;
"R.sub.b1 " stands for the radius of the addendum circle of the involute tooth on Wheel B;
"a" stands for the distance between the intersection point of the line past Point "R.sub.d " perpendicular to Line O O' and the point of tangency of Circle R.sub.a with Circle R.sub.b ;
"i" stands for the gear ratio;
".PSI." stands for the semiangle of the working tooth addendum thickness;
".theta." stands for a set constant;
"n" stands for n=0,1,2, . . . k, in which "k" is a natural number;
".alpha." stands for ##EQU43## ".beta." stands for ##EQU44##

12 more elements