Vehicle hinge driving apparatus

1. A vehicle hinge driving apparatus comprising:

an actuator;

a housing connected to the actuator;

an output shaft rotatably mounted in the housing; and

a transmission mechanism comprising a plurality of gear sets configured to transmit a torque from the actuator to the output shaft, wherein the plurality of gear sets comprises a proximal gear set close to the actuator, a first distal gear set operatively connected to the proximal gear set, and a second distal gear set operatively connected to the first distal gear set;

wherein the second distal gear set is detachably mounted and configured to respond to a required output torque;

wherein the output shaft is connected to the first distal gear set or the second distal gear set;

wherein the housing comprises:

a first mounting end to which the actuator is mounted;

a second mounting end to which the output shaft is mounted;

a first side surface;

a second side surface opposite the first side surface;

a first output-side support recess and a second output-side support recess provided in the second mounting end; and

a cover that is detachably mounted to the second mounting end, the cover comprising a through hole through which the output shaft extends; and

wherein a central vertical axis of the through hole is offset from a central vertical axis of the cover,

wherein the first output-side support recess is adjacent to the first side surface, and the second output-side support recess is adjacent to the second side surface, and

wherein the output shaft is rotatably supported in the first output-side support recess or the second output-side support recess.

2. The vehicle hinge driving apparatus according to claim 1 , wherein:

the proximal gear set comprises a worm drive including a worm and a worm wheel; and

each distal gear set comprises a spur gear set.

3. The vehicle hinge driving apparatus according to claim 1 , wherein the housing comprises an upper housing and a lower housing, the upper housing being detachably mounted to the lower housing by a plurality of fasteners.

4. The vehicle hinge driving apparatus according to claim 3 , wherein:

the transmission mechanism comprises a plurality of transmission shafts by which adjacent gear sets are connected; and

at least one transmission shaft of the plurality of transmission shafts is rotatably supported between the upper housing and the lower housing.

5. The vehicle hinge driving apparatus according to claim 4 , wherein:

the upper housing comprises an upper support recess;

the lower housing comprises a lower support recess; and

the at least one transmission shaft of the plurality of transmission shafts is received between the upper support recess and the lower support recess.

6. A vehicle hinge driving apparatus comprising:

an actuator;

a housing connected to the actuator;

an output shaft rotatably mounted in the housing; and

a transmission mechanism comprising a plurality of gear sets configured to transmit a torque from the actuator to the output shaft, wherein the plurality of gear sets comprises a proximal gear set close to the actuator, a first distal gear set operatively connected to the proximal gear set, and a second distal gear set operatively connected to the first distal gear set;

a hinge rod coupled to the output shaft, the hinge rod extending in a direction perpendicular to a central axis of the output shaft;

wherein the second distal gear set is detachably mounted and configured to respond to a required output torque;

wherein the output shaft is connected to the first distal gear set or the second distal gear set;

wherein the housing comprises:

a first mounting end to which the actuator is mounted;

a second mounting end to which the output shaft is mounted;

a first side surface;

a second side surface opposite the first side surface;

a first output-side support recess and a second output-side support recess provided in the second mounting end; and

a cover that is detachably mounted to the second mounting end, the cover comprising a through hole through which the output shaft extends; and

wherein a central vertical axis of the through hole is offset from a central vertical axis of the cover,

wherein the first output-side support recess is adjacent to the first side surface, and the second output-side support recess is adjacent to the second side surface, and

wherein the output shaft is rotatably supported in the first output-side support recess or the second output-side support recess.

7. The vehicle hinge driving apparatus according to claim 6 , wherein:

the hinge rod comprises a through hole through which the output shaft extends;

the output shaft comprises a plurality of first projections and a plurality of first recesses alternately arranged in a circumferential direction of the output shaft;

the hinge rod comprises a plurality of second recesses and a plurality of second projections alternately arranged on an inner circumferential surface of the through hole in a circumferential direction of the through hole;

the first projections of the output shaft are fitted into the second recesses of the hinge rod, respectively; and

the second projections of the hinge rod are fitted into the first recesses of the output shaft, respectively.

8. The vehicle hinge driving apparatus according to claim 7 , wherein the output shaft comprises an annular recess extending in the circumferential direction of the output shaft; and

the annular recess is provided in the first projections of the output shaft in the circumferential direction of the output shaft.

9. The vehicle hinge driving apparatus according to claim 6 , wherein:

the proximal gear set comprises a worm drive including a worm and a worm wheel; and

each distal gear set comprises a spur gear set.

10. The vehicle hinge driving apparatus according to claim 6 , wherein:

the housing comprises an upper housing and a lower housing, the upper housing being detachably mounted to the lower housing by a plurality of fasteners;

the transmission mechanism comprises a plurality of transmission shafts by which adjacent gear sets are connected; and

at least one transmission shaft of the plurality of transmission shafts is rotatably supported between the upper housing and the lower housing.

11. The vehicle hinge driving apparatus according to claim 10 , wherein:

the upper housing comprises an upper support recess;

the lower housing comprises a lower support recess; and

the at least one transmission shaft of the plurality of transmission shafts is received between the upper support recess and the lower support recess.

12. A vehicle comprising:

a vehicle body;

a door component coupled to the vehicle body by a vehicle hinge; and

a vehicle hinge driver configured to drive the vehicle hinge, the vehicle hinge driver comprising:

an actuator;

a housing connected to the actuator;

an output shaft rotatably mounted in the housing; and

a transmission mechanism comprising a plurality of gear sets configured to transmit a torque from the actuator to the output shaft, wherein the plurality of gear sets comprises a proximal gear set close to the actuator, a first distal gear set operatively connected to the proximal gear set, and a second distal gear set operatively connected to the first distal gear set;

wherein the second distal gear set is detachably mounted and configured to respond to a required output torque;

wherein the output shaft is connected to the first distal gear set or the second distal gear set;

wherein the housing comprises:

a first mounting end to which the actuator is mounted;

a second mounting end to which the output shaft is mounted;

a first side surface;

a second side surface opposite the first side surface;

a first output-side support recess and a second output-side support recess provided in the second mounting end; and

a cover that is detachably mounted to the second mounting end, the cover comprising a through hole through which the output shaft extends; and

wherein a central vertical axis of the through hole is offset from a central vertical axis of the cover,

wherein the first output-side support recess is adjacent to the first side surface, and the second output-side support recess is adjacent to the second side surface, and

wherein the output shaft is rotatably supported in the first output-side support recess or the second output-side support recess.

13. The vehicle according to claim 12 , wherein:

the housing comprises an upper housing and a lower housing, the upper housing being detachably mounted to the lower housing by a plurality of fasteners;

the upper housing comprises an upper support recess;

the lower housing comprises a lower support recess;

the transmission mechanism comprises a plurality of transmission shafts by which adjacent gear sets are connected; and

at least one transmission shaft of the plurality of transmission shafts is rotatably supported between the upper support recess and the lower support recess.

14. The vehicle hinge according to claim 12 , wherein:

the proximal gear set comprises a worm drive including a worm and a worm wheel; and

each distal gear set comprises a spur gear set.

15. The vehicle hinge according to claim 12 , wherein the housing comprises an upper housing and a lower housing, the upper housing being detachably mounted to the lower housing by a plurality of fasteners.

16. The vehicle hinge according to claim 15 , wherein the transmission mechanism comprises a plurality of transmission shafts by which adjacent gear sets are connected.

17. The vehicle hinge according to claim 16 , wherein:

the upper housing comprises an upper support recess;

the lower housing comprises a lower support recess; and

at least one transmission shaft of the plurality of transmission shafts is received between the upper support recess and the lower support recess.