Abstract:
The present invention relates to a speed variable system, and in the first input rotating direction, it is capable of controlling the output shaft to output in normal and reverse rotating directions, and the input shaft is in different speed ratios to the output shaft with respect to the normal and reverse rotation directions.

Description:
BACKGROUND OF THE INVENTION 
     (a) Field of the Invention 
     The present invention relates to a three-end shaft type differential gear set with controllable rotating direction and brake, wherein the input side of the three-end shaft type differential gear set performing driving in the same input rotating direction, and through controlling a controllable brake device (BK 101 ) and a controllable clutch device (CL 101 ), the output rotating direction at the output side can be in the same rotating direction or in the reverse rotating direction, or in a released state without mutual transmission, or the input side and the output side are both locked in a non-rotary state. 
     (b) Description of the Prior Art 
     A conventional speed variable gear system, having the same rotating direction or different rotating direction between the input side and the output side, is often installed with a normal/reverse gear set, and through changing the rotating direction of the gear set, the output in normal rotation or reverse rotation is generated; however, the structure thereof is complicated. 
     SUMMARY OF THE INVENTION 
     The present invention provides a three-end shaft type differential gear set with controllable rotating direction and brake, wherein a three-end shaft type differential gear set is combined with a controllable brake device (BK 101 ) and a controllable clutch device (CL 101 ), and when driving the rotation shaft (S 101 ) in the same rotating direction at the input side, through controlling the controllable brake device (BK 101 ) and the controllable clutch device (CL 101 ), the output side is enabled to perform normal or reverse rotation output, or is in a released state without mutual transmission, or the input side and the output side are both locked in a non-rotary state. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view showing the main structure of the three-end shaft type differential gear set with controllable rotating direction and brake being structured by a planetary gear set, according to one embodiment of the present invention. 
         FIG. 2  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 1  performing transmission in the same rotating direction, according to one embodiment of the present invention. 
         FIG. 3  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 1  performing transmission in different rotating directions, according to one embodiment of the present invention. 
         FIG. 4  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 1  being released with no mutual transmission, according to one embodiment of the present invention. 
         FIG. 5  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 1  being locked, according to one embodiment of the present invention. 
         FIG. 6  is a schematic view showing the main structure of the three-end shaft type differential gear set with controllable rotating direction and brake being structured by an epicycle gear set, according to one embodiment of the present invention. 
         FIG. 7  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 6  performing transmission in the same rotating direction, according to one embodiment of the present invention. 
         FIG. 8  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 6  performing transmission in different rotating directions, according to one embodiment of the present invention. 
         FIG. 9  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 6  being released with no mutual transmission, according to one embodiment of the present invention. 
         FIG. 10  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 6  being locked, according to one embodiment of the present invention. 
     
    
    
     DESCRIPTION OF MAIN COMPONENT SYMBOLS 
     
         
         (A 103 )         (A 103 ′): Rocker arm of planetary gear 
         (AS 103 )         (AS 103 ′): Sleeve type rotation shaft of planetary gear 
         (BK 101 ): Controllable brake device 
         (CL 101 ): Controllable clutch device 
         (DG 101 ): Planetary gear set 
         (H 100 ): Housing 
         (S 101 )         (S 102 ): Rotation shaft 
         (W 101 ): Sun wheel 
         (W 102 ): Outer annular wheel 
         (W 103 ): Planetary wheel 
         (A 203 )         (A 203 ′): Rocker arm of epicycle wheel 
         (AS 203 )         (AS 203 ′): Sleeve type rotation shaft of epicycle wheel 
         (EG 201 ): Epicycle gear set 
         (W 201 ): Input wheel 
         (W 202 ): Output wheel 
         (W 203 ): Epicycle wheel 
       
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     A conventional speed variable gear system, having the same rotating direction or different rotating direction between the input side and the output side, is often installed with a normal/reverse gear set, and through changing the rotating direction of the gear set, the output in normal rotation or reverse rotation is generated; however, the structure thereof is complicated. 
     The present invention relates to a three-end shaft type differential gear set with controllable rotating direction and brake, wherein the input side of the three-end shaft type differential gear set performing driving in the same input rotating direction, and through controlling a controllable brake device (BK 101 ) and a controllable clutch device (CL 101 ), the output rotating direction at the output side can be in the same rotating direction or in the reverse rotating direction, or in a released state without mutual transmission, or the input side and the output side are both locked in a non-rotary state. 
     The present invention provides a three-end shaft type differential gear set with controllable rotating direction and brake, wherein a three-end shaft type differential gear set is combined with a controllable brake device (BK 101 ) and a controllable clutch device (CL 101 ), and when driving the rotation shaft (S 101 ) in the same rotating direction at the input side, through controlling the controllable brake device (BK 101 ) and the controllable clutch device (CL 101 ), the output side is enabled to perform normal or reverse rotation output, or is in a released state without mutual transmission, or the input side and the output side are both locked in a non-rotary state. 
     According to the three-end shaft type differential gear set with controllable rotating direction and brake, the three-end shaft type differential gear set has three output/input ends for inputting rotation, and the differential transmission coupling is mutually formed between the three, and the conventional structure thereof includes a planetary gear set or an epicycle gear set; 
     According to the present invention, the three-end shaft type differential gear set with controllable rotating direction and brake structured through a planetary gear set is disclosed as followings: 
       FIG. 1  is a schematic view showing the main structure of the three-end shaft type differential gear set with controllable rotating direction and brake being structured by a planetary gear set, according to one embodiment of the present invention. 
     Referring to  FIG. 1 , a sun wheel (W 101 ) of the planetary gear set (DG  101 ) is combined with a rotation shaft (S 101 ) for serving as an output/input end, and an outer annular wheel (W 102 ) is combined with a rotation shaft (S 102 ), and a rocker arm of planetary wheel (A 103 ′) linked by the planetary wheel (W 103 ) of the planetary gear set (DG 101 ) is rotated and sleeved on the rotation shaft (S 102 ) through a sleeve type rotation shaft of planetary wheel (AS 103 ′), and a rocker arm of planetary wheel (A 103 ) at the other end is rotated and sleeved on the rotation shaft (S 101 ) through a sleeve type rotation shaft of planetary wheel (AS 103 ), and the rocker arm of planetary wheel (A 103 ) or the sleeve type rotation shaft of planetary wheel (AS 103 ) is connected to an action side of a controllable brake device (BK 101 ), and the other action side of the controllable brake device (BK 101 ) is fixed in a housing (H 100 ), and the planetary gear set (DG 101 ) is also fixed in the housing (H 100 ), which mainly consists of:
         Planetary gear set (DG 101 ): constituted by a sun wheel (W 101 ) and an outer annular wheel (W 102 ) and at least a planetary wheel (W 103 ), including through gears engaging with each other or through friction wheels mutually performing friction transmissions to form the planetary gear set function, and also constituted including the rotation shaft (S 101 ), the rotation shaft (S 102 ), the rocker arm of planetary wheel (A 103 ), the rocker arm of planetary wheel (AS 103 ′), the sleeve type rotation shaft of planetary wheel (AS 103 ), and the sleeve type rotation shaft of planetary wheel (AS 103 ′) and a bearing, for being installed in a shell of the planetary gear set (DG 101 ), and the planetary gear set (DG 101 ) is fixed in the housing (H 100 );   Rocker arm of planetary wheel (A 103 ): having one end provided for allowing the planetary wheel (W 103 ) to rotate and link, and the other end being sleeved on the rotation shaft (S 101 ) through the sleeve type rotation shaft of planetary wheel (AS 103 ), and the rocker arm of planetary wheel (A 103 ) or the sleeve type rotation shaft of planetary wheel (AS 103 ) is connected to an action side of the controllable brake device (BK 101 ), and the other action side of the controllable brake device (BK 101 ) is fixed in the housing (H 100 );   Rocker arm of planetary wheel (AS 103 ′): having one end provided for allowing the planetary wheel (W 103 ) to rotate and link, and the other end being rotated and sleeved on the rotation shaft (S 102 ) through the sleeve type rotation shaft of planetary wheel (AS 103 ′);   Controllable brake device (BK 101 ): constituted by a brake device controlled by a manual force or mechanical force or hydraulic force or pneumatic force or electromagnetic force, and having action sides for the operations of a brake locking state for engagement or a releasing state for separation, wherein one of the action sides is connected to the sleeve type rotation shaft of planetary wheel (AS 103 ) or the rocker arm of planetary wheel (A 103 ), and the other action side is fixed in the housing (H 100 );   Controllable clutch device (CL 101 ): constituted by a controllable clutch device or a centrifugal clutch device driven by a manual force or mechanical force or hydraulic force or pneumatic force or electromagnetic force, and installed between the rotation shaft (S 101 ) and the rotation shaft (S 102 ) for performing operations of engagement or disengagement;   The sun wheel (W 101 ) of the planetary gear set (DG 101 ) is combined with the rotation shaft (S 101 ) for serving as an output/input end, the rocker arm of planetary wheel (A 103 ) and the sleeve type rotation shaft of planetary wheel (AS 103 ) linked by the planetary wheel (W 103 ) of the planetary gear set (DG 101 ) are rotated and sleeved on the rotation shaft (S 101 ), and the mentioned rocker arm of planetary wheel (A 103 ) and the sleeve type rotation shaft of planetary wheel (AS 103 ) is connected to an action side of the controllable brake device (BK 101 ), and the other action side of the controllable brake device (BK 101 ) is fixed in the housing (H 100 );       

     The outer annular wheel (W 102 ) is combined with the rotation shaft (S 102 ) and coupled with the planetary wheel (W 103 ) for transmission, and the rocker arm of planetary wheel (A 103 ′) linked by the other end of the planetary wheel (W 103 ) of the planetary gear set (DG 101 ) is provided for driving the sleeve type rotation shaft of planetary wheel (AS 103 ′), and the rocker arm of planetary wheel (AS 103 ′) is rotated and sleeved on the rotation shaft (S 102 ); 
     The sun wheel (W 101 ) is connected to the rotation shaft (S 101 ) and coupled with the planetary wheel (W 103 ) for transmission; 
     The operations of the three-end shaft type differential gear set with controllable rotating direction and brake as shown in  FIG. 1  includes one or more than one of following functions: 
       FIG. 2  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 1  performing transmission in the same rotating direction, according to one embodiment of the present invention. 
     As shown in  FIG. 2 , the operation state is as following:
         When the controllable brake device (BK 101 ) is in the releasing state and the controllable clutch device (CL 101 ) is in the engaging state, the rotation shaft (S 101 ) and the rotation shaft (S 102 ) are in the engaging state for performing the transmission in the same rotating direction;       

       FIG. 3  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 1  performing transmission in different rotating directions, according to one embodiment of the present invention. 
     As shown in  FIG. 3 , the operation state is as following:
         When the controllable brake device (BK 101 ) is in the brake locking state and the controllable clutch device (CL 101 ) is in the releasing state, the transmission relation of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) is the transmission function in the reverse rotating directions;       

       FIG. 4  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 1  being released with no mutual transmission, according to one embodiment of the present invention. 
     As shown in  FIG. 4 , the operation state is as following:
         When the controllable brake device (BK 101 ) is in the releasing state and the controllable clutch device (CL 101 ) is in the releasing state, the rotation shaft (S 101 ) and the rotation shaft (S 102 ) are released with no mutual transmission.       

       FIG. 5  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 1  being locked, according to one embodiment of the present invention. 
     As shown in  FIG. 5 , the operation state is as following:
         When the controllable brake device (BK 101 ) is in the brake locking state and the controllable clutch device (CL 101 ) is in the engaging state, the rotation shaft (S 101 ) and the rotation shaft (S 102 ) are locked.       

     According to the three-end shaft type differential gear set with controllable rotating direction and brake of the present invention, the three-end shaft type differential gear set has three output/input ends for inputting rotation, and the differential transmission coupling is mutually formed between the three, and the conventional structure thereof includes a planetary gear set or an epicycle gear set; 
     According to the present invention, the three-end shaft type differential gear set with controllable rotating direction and brake structured through an epicycle gear set is disclosed as followings: 
       FIG. 6  is a schematic view showing the main structure of the three-end shaft type differential gear set with controllable rotating direction and brake being structured by an epicycle gear set, according to one embodiment of the present invention. 
     Referring to  FIG. 6 , an input wheel (W 201 ) of the epicycle gear set (EG 201 ) is connected to the rotation shaft (S 101 ) for being served as an output/input end, and an output wheel (W 202 ) is combined with the rotation shaft (S 102 ), a rocker arm of epicycle wheel (A 203 ′) linked by an epicycle wheel (W 203 ) of the epicycle gear set (EG 201 ) is rotated and sleeved on the rotation shaft (S 102 ) through a sleeve type rotation shaft of epicycle wheel (AS 203 ′), and an rocker arm of epicycle wheel (A 203 ) at the other end is rotated and sleeved on the rotation shaft (S 101 ) through a sleeve type rotation shaft of epicycle wheel (AS 203 ), and the rocker arm of epicycle wheel (A 203 ) or the sleeve type rotation shaft of epicycle wheel (AS 203 ) is connected to an action side of the controllable brake device (BK 101 ), and the other action side of the controllable brake device (BK 101 ) is fixed in the housing (H 100 ), and the epicycle gear set (EG 201 ) is also fixed in the housing (H 100 ); which mainly consists of:
         Epicycle gear set (EG 201 ): constituted by an input wheel (W 201 ) and an output wheel (W 202 ) and at least an epicycle wheel (W 203 ), and including through bevel gears engaging with each other or through bevel friction wheels mutually performing friction transmissions to form the epicycle gear set function, and also constituted including the rotation shaft (S 101 ), the rotation shaft (S 102 ), the rocker arm of epicycle wheel (A 203 ), the rocker arm of epicycle wheel (A 203 ′), the sleeve type rotation shaft of epicycle wheel (AS 203 ), the sleeve type rotation shaft of epicycle wheel (AS 203 ′) and a bearing, for being installed in a shell of the epicycle gear set (EG 201 ), and the epicycle gear set (EG 201 ) is fixed in the housing (H 100 ); the speed ratio of the mentioned rotation shaft (S 101 ) and the rotation shaft (S 102 ) can be the same or different;   Rocker arm of epicycle wheel (A 203 ): having one end provided for allowing the epicycle wheel (W 203 ) to rotate and link, and the other end being sleeved on the rotation shaft (S 101 ) through the sleeve type rotation shaft of epicycle wheel (AS 203 ), the rocker arm of epicycle wheel (A 203 ) or the sleeve type rotation shaft of epicycle wheel (AS 203 ) is connected to an action side of the controllable brake device (BK 101 ), and the other action side of the controllable brake device (BK 101 ) is fixed in the housing (H 100 );   Rocker arm of epicycle wheel (A 203 ′): having one end provided for allowing the epicycle wheel (W 203 ) to rotate and link, and the other end being rotated and sleeved on the rotation shaft (S 102 ) through the sleeve type rotation shaft of epicycle wheel (AS 203 ′);   Controllable brake device (BK 101 ): constituted by a brake device controlled by a manual force or mechanical force or hydraulic force or pneumatic force or electromagnetic force, and having action sides for the operations of a brake locking state for engagement or a releasing state for separation, wherein one of the action sides is connected to the sleeve type rotation shaft of epicycle wheel (AS 203 ) or the rocker arm of epicycle wheel (A 203 ), and the other action side is fixed in the housing (H 100 );   Controllable clutch device (CL 101 ): constituted by a controllable clutch device or a centrifugal clutch device driven by a manual force or mechanical force or hydraulic force or pneumatic force or electromagnetic force, and installed between the rotation shaft (S 101 ) and the rotation shaft (S 102 ) for performing operations of engagement or disengagement;   The input wheel (W 201 ) of the epicycle gear set (EG 201 ) is connected to the rotation shaft (S 101 ) for serving as an output/input end, the rocker arm of epicycle wheel (A 203 ) and the sleeve type rotation shaft of epicycle wheel (AS 203 ) linked by the epicycle wheel (W 203 ) of the epicycle gear set (EG 201 ) are rotated and sleeved on the rotation shaft (S 101 ), and the mentioned rocker arm of epicycle wheel (A 203 ) or the sleeve type rotation shaft of epicycle wheel (AS 203 ) is connected to an action side of the controllable brake device (BK 101 ), and the other action side of the controllable brake device (BK 101 ) is fixed in the housing (H 100 );       

     The output wheel (W 202 ) is connected to the rotation shaft (S 102 ) and coupled with the epicycle wheel (W 203 ) for transmission, and the rocker arm of epicycle wheel (A 203 ′) linked at the other end of the epicycle wheel (W 203 ) of the epicycle gear set (EG 201 ) is provided for driving the sleeve type rotation shaft of epicycle wheel (AS 203 ′), and the rocker arm of epicycle wheel (A 203 ′) is rotated and sleeved on the rotation shaft (S 102 ); 
     The input wheel (W 201 ) is connected to the rotation shaft (S 101 ) and coupled with the epicycle wheel (W 203 ) for transmission; 
     The operations of the three-end shaft type differential gear set with controllable rotating direction and brake as shown in  FIG. 6  include one or more than one of following functions: 
       FIG. 7  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 6  performing transmission in the same rotating direction, according to one embodiment of the present invention. 
     As shown in  FIG. 7 , the operation state is as following:
         When the controllable brake device (BK 101 ) is in the releasing state and the controllable clutch device (CL 101 ) is in the engaging state, the rotation shaft (S 101 ) and the rotation shaft (S 102 ) are in the engaging state for performing the transmission in the same rotating direction;       

       FIG. 8  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 6  performing transmission in different rotating directions, according to one embodiment of the present invention. 
     As shown in  FIG. 8 , the operation state is as following:
         When the controllable brake device (BK 101 ) is in the brake locking state and the controllable clutch device (CL 101 ) is in the releasing state, the transmission relation of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) is the transmission function in the reverse rotating directions;       

       FIG. 9  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 6  being released with no mutual transmission, according to one embodiment of the present invention. 
     As shown in  FIG. 9 , the operation state is as following:
         When the controllable brake device (BK 101 ) is in the releasing state and the controllable clutch device (CL 101 ) is in the releasing state, the rotation shaft (S 101 ) and the rotation shaft (S 102 ) are released with no mutual transmission.       

       FIG. 10  is a schematic view showing the operation state of the rotation shaft (S 101 ) and the rotation shaft (S 102 ) shown in  FIG. 6  being locked, according to one embodiment of the present invention. 
     As shown in  FIG. 10 , the operation state is as following:
         When the controllable brake device (BK 101 ) is in the brake locking state and the controllable clutch device (CL 101 ) is in the engaging state, the rotation shaft (S 101 ) and the rotation shaft (S 102 ) are in the locked state.