US 2003/0148845 A1Published application

Self-contained continuously-variable transmission with mechanical integral torque converter having automatic drive control

OwnerTeodoro Rodrigo Borbolla Gonzalezinventor

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Abstract

An automatic transmission that has a planetary system which receives the power by the porter and transmits it initially in a direct way with low pitch rate by the sun gear, and afterwards in a regulated manner, to keep the optimum engine power, through a planetary system installed inside a growing diameter cylinder impeller, coupled to the ring gear. Such system consist of several adjacent rollers that have a pitch and splines system for making a proper contact with the cone, which receive the traction form the conic impeller, and transmit it to the central gear with a variable speed, depending to the demanded torque , measured by a sensing spring mechanism installed at the sun gear, that can be manually adjusted to maintain an overdrive or economy output torque. The sun gear is coupled to a shaft (which operates initially as a transmission shaft), with a helical slat which sets the receptor system to an axial position, corresponding to the demanded power, to make contact certain diameter of the cone, and though, synchronized the shift of sequence , by subtracting the unequal speed between the shaft coupled to the central gear, and the sun gear.

A Self Contained Infinitely Variable Transmission with an Integral Mechanical Torque Converter with an Automatic Drive Control, comprising:

a primary traction and control shaft (7);
a cylindrical impeller of increasing diameter (10);
a double coupling shaft (19);
a lock plate (6);
a front epicyclical gear system comprising
a primary gear (1) that receives the motion from the power plant;
an annular gear (2) meshing with said primary gear (1);
a planet gear carrier fixed to said annular gear (2);
a set of two or more planet gears (4) mounted on said planet carrier;
a second annular gear (3) engaging said set of two or more planet gears (4) and coupled to said cylindrical impeller of increasing diameter (10);
and,
a sliding sun gear (5) coupled to said primary traction and control shaft (7) and meshing with said set of two or more planet gears (4), wherein the sun gear (5) may slide between two positions, a first position in which the primary traction and control shaft (7) is coupled to said double coupling shaft (19) and a second position in which the sun gear (5) is not coupled to said double coupling shaft (19), but is locked to said lock plate (6);
a control system for controlling the sliding of said sun gear (5) comprising
means (8) for causing said sun gear (5) to slide between said two
positions;
and
a friction disk (22);
a torque sensor (9) consisting of
a spring hooking said sun gear (5) through said lock plate (6), when it is at
said second position;
and
a mechanism (20) for adjusting the sensitivity of said torque sensor (9);
a rear epicyclical gear system comprising
a system with several rollers (11) moved by said cylindrical impeller of increasing diameter (10);
a set of several rear gears (13) and shafts engaged to said rollers (11);
a set of several pivoting arms (32) that carries said rear gears and shafts;
a second set of several planet gears (14) engaged to said rear gears;
a positioning spider (12) holding said pivoting arms (32) and said second set of planet gears, wherein said positioning spider (12) may be deployed along said primary traction and control shaft (7);
a central gear (15) fitted to said positioning spider, engaged said second set of planet gears (14);
and
an outer shaft (16) fixed to said central gear (15);
a central splined bar (21), which jointly with said primary traction and control shaft (7) are able to deploy said positioning spider (12);
a first unidirectional clutch (17) mounted on said cylindrical impeller of increasing diameter (10);
a second unidirectional clutch (18) mounted between said outer shaft (16) and said double coupling shaft (19);
a rear gear train (23, 24, 25, 26, 27, 28, and 29) for multiplying and reverse operation which will be the output of the transmission;
and
a transmission housing containing said elements, which receives the reaction force of said central splined bar (21), said friction disk (22), said lock plate (6), said torque sensor (9), and said first unidirectional clutch (17).

34 more elements

Abstract

Claims20