Abstract:
A transmission system made of gears and bearings. The system improves the efficiency of force transfer between rotational motion and rectilinear motion. To accomplish this, the gears and bearings are assembled to allow maximum torque output during force input and reproduced cyclically. Bearings of the transmission system allow a crank to rotate to a position to increase the torque applied on gears to output shaft.

Description:
FIELD OF THE INVENTION 
   The present invention relates to a transmission system, and more particularly to a force transformation technique for use in a force transformation between the rotational motion and the rectilinear motion. 
   BACKGROUND OF THE INVENTION 
   Referring to  FIG. 1A , a schematic diagram illustrates a conventional gasoline engine performing a force transformation. The gasoline engine transforms a force of the rectilinear motion into a force of the rotational motion. The force transformation can be achieved through a piston  11  within a cylinder  10 , a connector pin  12 , a connecting rod  15 , a crank shift  16  and a crank pin  13 . 
   An explosive force ignited by gasoline in a combustion chamber of the cylinder  10  drives the piston  11  within the cylinder  10  to perform the rectilinear motion as D direction. The rectilinear motion then goes through the crank shaft  16  from the connecting rod  15 . The force then transmitted to a principal axis  14 . The principle axis  14  then rotates toward R direction to accomplish the rotational motion. 
   However, the current force transformation technique is poor in the efficiency. The inventor of the present invention based on years of experience on related research and development of the transmission technique invents a transmission system for use in the force transformation. 
   SUMMARY OF THE INVENTION 
   Accordingly, the object of the present invention is to provide a transmission system. Furthermore, the present invention relates to a force transformation technique for use in a force transformation between the rotational motion and the rectilinear motion. 
   In accordance with the present invention the transmission system comprises a first bearing, a second bearing, a third bearing, a first gear, a second gear, a third gear, a fourth gear and a crank. An end of the first bearing is fixed. Another end of the first bearing is sheathed in a center of the first gear based on an axis of the first bearing corresponding to a center of the first gear. An end of the second bearing is sheathed in a section of the first gear which is at a periphery of the first bearing sheathed. A center of the second gear corresponds to an axis of the second bearing, and the center of the second gear relative to the first gear is sheathed in another end of the second bearing. The third bearing is sheathed in a center of the third gear which corresponds to an axis of the third bearing. The third gear also gears into the first gear. The third bearing is sheathed in a section which diverges from a center of the fourth gear. The fourth gear also gears into the second gear. An end of the crank is disposed on a second gear and is at a periphery of the second bearing. 
   Therefore, according to the transmission system a force is inputted by the third bearing or the crank. When the force is inputted by the third bearing, the aforesaid bearings and gears then transmit the force to the crank so as to output the force. Alternately when the force is inputted by the crank, the aforesaid bearings and gears then transmit the force to the third bearing so as to output the force. Furthermore, the crank is connected to connecting rods. The connecting rods then move in a guide way ( 31 ) or a guide bush ( 32 ). Therefore, the force transformation between the rotational motion and the rectilinear motion can be achieved. In addition, the number gear teeth for the third gear and the fourth gear at the third bearing of the transmission system can be changed to modify a rotational speed ratio. 
   Other features and advantages of the present invention and variations thereof will become apparent from the following description, drawings, and claims. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1A  is a schematic diagram illustrating a conventional gasoline engine to perform a force transformation; 
       FIG. 1B  is a schematic diagram illustrating the transmission system at its upmost position. 
       FIG. 1C  is a schematic diagram illustrating the crank at optimum position at time of ignition. 
       FIG. 2  is a sectional drawing illustrating a transmission system according to an embodiment of the present invention; 
       FIG. 3  is a schematic diagram illustrating the transmission system to perform a force transformation; 
       FIG. 4  is a sectional drawing illustrating a second transmission system according to an embodiment of the present invention; 
       FIG. 5  is a sectional drawing illustrating a third transmission system according to an embodiment of the present invention; 
       FIG. 6  is a schematic diagram illustrating the third transmission system performing a force transformation according to an embodiment of the present invention; and 
       FIG. 7  is a sectional drawing illustrating a fourth transmission system according to an embodiment of the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   To make it easier for our examiner to understand the objective of the invention, its innovative features and performance, a detailed description and technical characteristics of the present invention are described together with the drawing as follows. 
   Referring to  FIG. 2 , a sectional drawing illustrates a transmission system according to an embodiment of the present invention. The transmission system  20  includes a first bearing  21 , a second bearing  22 , a third bearing  23 , a first gear  24 , a second gear  25 , a third gear  26 , a fourth gear  27  and a crank  28 . An end of the first bearing  21  is fixed. Another end of the first bearing  21  is sheathed in a center of the first gear  24  based on an axis of the first bearing  21  corresponding to a center of the first gear  24 . An end of the second bearing  22  is sheathed in a section of the first gear  24  which is at a periphery of the first bearing  21  sheathed. A center of the second gear  25  corresponds to an axis of the second bearing  22 , and the center of the second gear  25  relative to the first gear  24  is sheathed in another end of the second bearing  22 . The third bearing  23  is sheathed in a center of the third gear  26  which corresponds to an axis of the third bearing  23 . The third gear  26  also gears into the first gear  24 . The third bearing  23  is sheathed in a section which diverges from a center of the fourth gear  27 . The fourth gear  27  also gears into the second gear  25 . An end of the crank  28  is disposed on a second gear  25  and is at a periphery of the second bearing  22 . 
   When a force is inputted by the third bearing  23 , the aforesaid bearings and gears then transmit the force to the crank  28  so as to output the force. Alternately when a force is inputted by the crank  28 , the aforesaid bearings and gears then transmit the force to the third bearing  23  so as to output the force. 
   Referring to  FIG. 3 , a schematic diagram illustrates the transmission system performing a force transformation according to an embodiment of the present invention. When a rotational force is inputted by the third bearing  23 , the third gear  26  rotates toward R 1  direction. The first gear  24  which gears into the third gear  26  is then driven to rotate toward R 2  direction. The second gear  25  of the second bearing  22  fixed on the first gear  23  rotates toward r 2  direction as the revolution by using the first bearing  21  to be a center. The r 2  direction corresponds to the R 2  direction. Meanwhile, the rotational force in the third bearing  23  influences the fourth gear  27  to rotate toward R 3  direction. The second gear  25  which gears into the fourth gear  27  is then driven to rotate toward R 4  direction as the rotation by utilizing the second bearing  22  to be a center. Connecting rods connected to the crank  28  then output the force to perform reciprocations as the rectilinear motion. Alternately, when a force is inputted by the crank  28 , the second gear  25  rotates toward the R 4  direction as the rotation. The fourth gear  27  which gears into the second gear  25  is then driven to rotate toward the R 3  direction. The third bearing  23  then rotates in order to output the force. Meanwhile, the third gear  26  is also driven to rotate toward the R 1  direction. The first gear  24  which gears into the third gear  26  then rotates toward the R 2  direction. The second gear  25  of the second bearing  22  fixed on the first gear  24  is then driven to rotate toward the r 2  direction by using the first bearing  21  to be the center. In addition, the second gear  25  is a planetary gear. 
   Referring to  FIG. 4 , a sectional drawing illustrates a second transmission system according to an embodiment of the present invention. The transmission system  40  includes the transmission system  20  as shown in  FIG. 2 . In other words, the transmission system  40  has two sets of the transmission systems  20  Another end of the crank  28  is connected to another transmission structure set composed of the first bearing  21 , the second bearing  22 , the third bearing  23 , the first gear  24 , the second gear  25 , third gear  26  and the fourth gear  27 . The transmission system  40  then forms a parallel structure. 
   When a force is inputted by the third bearing  23 , the aforesaid gears and bearing then transmit the force to the crank  28  so as to output the force. Alternately when the force is inputted by the crank  28 , the aforesaid gears and bearings then transmit the force to the third bearing  23  so as to output the force. In addition, the number gear teeth for the third gear and the fourth gear at the third bearing of the transmission system can be changed to modify a rotational speed ratio. The rotational speed ratio for the third bearing is an integer ratio, a multiple ratio for the first bearing and the second bearing. 
   Referring to  FIG. 5 , a sectional drawing illustrates a third transmission system according to an embodiment of the present invention. The transmission system  50  includes the first bearing  21 , the second bearing  22 , the third bearing  23 , a first belt  51 , a second belt  52 , the first gear  24 , the second gear  25 , the third gear  26 , the fourth gear  27  and the crank  28 . An end of the first bearing  21  is fixed. Another end of the first bearing  21  is sheathed in a center of the first gear  24  based on an axis of the first bearing  21  corresponding to a center of the first gear  24 . An end of the second bearing  22  is sheathed in a section of the first gear  24  which is at a periphery of the first bearing  21  sheathed. A center of the second gear  25  corresponds to an axis of the second bearing  22 , and the center of the second gear  25  relative to the first gear  24  is sheathed in another end of the second bearing  22 . The third bearing  23  is sheathed in a center of the third gear  26  based on an axis of the third bearing  23  corresponding to a center of the third gear  26 . The force is then transmitted by the first belt  51 , thereby driving the first gear  24 . The third bearing  23  is sheathed in a section which diverges from a center of the fourth gear  27 . The force is then transmitted by the second belt  52 , thereby driving the second gear  25 . An end of the crank  28  is disposed on a second gear  25  and is at a periphery of the second bearing  22 . 
   When a force is inputted by the third bearing  23 , the aforesaid gears, belts and bearings transmit the force to the crank  28  to output the force. Alternately when the force is inputted by the crank  28 , the aforesaid gears, belts and bearings transmit the force to the third bearing  23  to output the force. 
   Referring to  FIG. 6  a schematic diagram illustrates the third transmission system performing a force transformation according to an embodiment of the present invention. When a rotational force is inputted by the third bearing  23 , the third gear  26  rotates toward R 5  direction. The first belt  51  then moves toward D 1  direction, which means the first belt  51  transmits the rotational force rotated by the third gear  26 . The first gear  24  then rotates toward R 6  direction. The second gear  25  of the second bearing  22  fixed on the first ear  23  rotates toward r 6  direction as the revolution by using the first bearing  21  to be a center. The r 6  direction corresponds to the R 6  direction. Meanwhile, the rotational force in the third bearing  23  influences the fourth gear  27  to rotate toward R 7  direction. The second belt  52  then moves toward the D 1  direction, which means the second belt  52  transmits the rotational force rotated by the fourth gear  27 . The second gear  25  then rotates toward R 8  direction as the rotation by using the second bearing  22  to be the center. Connecting rods connected to the crank  28  then output the force to perform reciprocations as the rectilinear motion. When a force is inputted by the crank  28 , the second gear  25  rotates toward the R 8  direction as the rotation. The second belt  52  then moves toward the D 1  direction, which means the second belt  52  transmits the force rotated by the second gear  25 . The fourth gear  27  then rotates toward the R 7  direction. The third bearing  23  then performs a rotational motion output the force. Meanwhile, the third gear  26  is driven to rotate toward the R 5  direction. The first belt  51  then moves toward the D 1  direction, which means the first belt  51  transmits the force sent from the third gear  26 . The first gear  24  then rotates toward the R 6  direction. The second gear  25  is also driven to rotate toward the r 6  direction as the revolution by using the first bearing  21  to be the center. In addition, the second gear  25  is a planetary gear. Those gears can be replaced to increase the design flexibility. 
   Referring to  FIG. 7 , a sectional drawing illustrates a fourth transmission system according to an embodiment of the present invention. The transmission system  70  includes the transmission system  50  as shown in  FIG. 5 . In other words, the transmission system  70  has two sets of the transmission systems  50 . Another end of the crank  28  is connected to another transmission structure composed of the first bearing  21 , the second bearing  22 , the third bearing  23 , the first belt  51 , the second belt  52 , the first gear  24 , the second gear  25 , the third gear  26  and the fourth gear  27 . The transmission system  70  then forms a parallel structure. 
   When a force is inputted by the third bearing  23 , the aforesaid gears, belts and bearings transmit the force to the crank  28  to output the force. Alternately when the force is inputted by the crank  28 , the aforesaid gears, belts and bearings transmit the force to the third bearing  23  to output the force. 
   To sum up above, the transmission system illustrated in  FIGS. 2 ,  4 ,  5  and  6  is generally disposed in a shell ( 30 ). The transmission system further includes connecting rods which are connected to the crank to transmit the force. The force transformation between the rotational motion and the rectilinear motion can be achieved when the link motion is in a guide way ( 31 ) or a guide bush ( 32 ). In addition, the first bearing, the second bearing, the third bearing, the first gear, the second gear, the third gear and the fourth gear are composed of medium carbon steels or materials which could carry loads. The shell ( 30 ) is composed of low carbon steels or materials which could carry loads. The gear teeth of gears can be bevel gears, spur gears, or double helical gears. Furthermore, the belts illustrated in  FIGS. 5 and 6  can be chains or gear belts. The center distances, the eccentric distances and the torques for the aforesaid gears can be changed based on different demands. 
   Although the features and advantages of the embodiments according to the preferred invention are disclosed, it is not limited to the embodiments described above, but encompasses any and all modifications and changes within the spirit and scope of the following claims.