Power assisting device and bicycle using same

Patent metadata

Field	Value
Publication number	US-9637198-B2
Application number	US-201514826219-A
Country	US
Kind code	B2
Filing date	Aug 14, 2015
Priority date	Mar 31, 2015
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

The power assisting device includes driver with a rotary axis, a main gear, a first transmission rod, a first bevel gear, a second bevel gear, a first rotating rod, a third bevel gear, and a first driving wheel. The main gear is driven by the driver to rotate about the rotary axis. The first transmission rod extends along a direction perpendicular to the rotary axis. The first bevel gear and the second bevel gear are separately sleeved on the transmission rod. The first bevel gear is engaged with the main gear. The first rotating rod extends along a direction parallel to the rotary axis. The third bevel gear is sleeved on the first rotating rod and is engaged with the second bevel gear. The first driving wheel is coupled to the first rotating rod for assisting a wheel of a vehicle to move forward.

First claim

What is claimed is:

1. A power assisting device comprising:
a driver having a rotary axis;
a main gear driven by the driver to rotate about the rotary axis of the driver;
a first transmission rod extending along a direction perpendicular to the rotary axis;
a first bevel gear coupled to the first transmission rod and engaged with the main gear;
a second bevel gear coupled to the first transmission rod and spaced apart from the first bevel gear;
a first rotating rod positioned below the first transmission rod, and extending in a direction parallel to the rotary axis;
a third bevel gear coupled to one end of the first rotating rod away from a wheel of a vehicle and engaged with the second bevel gear; and
a first driving wheel coupled to another end of the first rotating rod adjacent to the wheel of the vehicle and spaced apart from the third bevel gear, wherein the first driving wheel abuts against a side surface of the wheel of the vehicle to assist in rotation of the wheel of the vehicle; and
wherein the driver comprises a driving body and a driving shaft rotatably coupled to the driving body, the driving body is coupled to one end of the driving shaft away from the wheel of the vehicle, and the main gear is coupled to another end of the driving shaft adjacent to the wheel of the vehicle.

2. The power assisting device of claim 1 , wherein the power assisting device further comprises:
a second transmission rod extending along the direction perpendicular to the rotary axis, the second transmission rod and the first transmission rod positioned at two sides of the main gear;
a fourth bevel gear coupled to the second transmission rod, and engaged with the main gear;
a fifth bevel gear coupled to the second transmission rod and spaced apart from the fourth bevel gear;
a second rotating rod positioned below the second transmission rod, extending along the direction parallel to the rotary axis,
a sixth bevel gear engaged with the fifth bevel gear,
a direction-changing gear coupled to the second rotating rod, and
a second driving wheel coupled to the direction-changing gear for assisting the wheel of the vehicle to move forward.

3. The power assisting device of claim 2 , wherein the direction-changing gear comprises a first engaging portion, a second engaging portion and a coupling rod, the first engaging portion couples to the second rotating rod and spaced apart from the sixth bevel gear, the second engaging portion engages the first engaging portion, the coupling rod is inserted into the second engaging portion and extends along the direction parallel to the rotary axis, the second driving wheel couples to the coupling rod, wherein the second driving wheel is spaced apart from the second engaging portion to drive the wheel of the vehicle to move forward.

4. The power assisting device of claim 2 , wherein the second driving wheel is a rubber wheel.

5. The power assisting device of claim 1 , wherein the rotary axis extends along a lengthwise direction of the driving shaft, and wherein the driving body is capable of driving the main gear to rotate about the rotary axis.

6. The power assisting device of claim 1 , wherein the first driving wheel is a rubber wheel.

7. A bicycle comprising:
a frame;
a wheel mounted on the frame; and
a power assisting device mounted on the frame and comprising:
a driver having a rotary axis;
a main gear driven by the driver to rotate about the rotary axis of the driver;
a first transmission rod extending along a direction perpendicular to the rotary axis;
a first bevel gear coupled to the first transmission rod and engaged with the main gear;
a second bevel gear coupled to the first transmission rod and spaced apart from the first bevel gear;
a first rotating rod positioned below the first transmission rod, extending along a direction parallel to the rotary axis;
a third bevel gear coupled to one end of the first rotating rod away from the wheel of the bicycle and engaged with the second bevel gear; and
a first driving wheel coupled to another end of the first rotating rod adjacent to the wheel of the bicycle and spaced apart from the third bevel gear, and the first driving wheel abuts against a first side surface of the wheel of the bicycle for assisting the wheel of the bicycle to move forward; and
wherein the driver comprises a driving body and a driving shaft rotatably coupled to the driving body, the driving body is coupled to one end of the driving shaft away from the wheel of the bicycle, and the main gear is coupled to another end of the driving shaft adjacent to the wheel of the bicycle.

8. The bicycle of claim 7 , wherein the power assisting device further comprising:
a second transmission rod extending along the direction perpendicular to the rotary axis, the second transmission rod and the first transmission rod positioned at two sides of the main gear;
a fourth bevel gear coupled to the second transmission rod, and engaged with the main gear;
a fifth bevel gear coupled to the second transmission rod and spaced apart from the fourth bevel gear;
a second rotating rod positioned below the second transmission rod, extending along the direction parallel to the rotary axis,
a sixth bevel gear engaged with the fifth bevel gear,
a direction-changing gear coupled to the second rotating rod, and
a second driving wheel coupled to the direction-changing gear and abutted against a second side surface of the wheel of the bicycle opposite to the first side surface for assisting the wheel of the bicycle to move forward.

9. The bicycle of claim 8 , wherein the direction-changing gear comprises a first engaging portion, a second engaging portion and a coupling rod, the first engaging portion couples to the second rotating rod and is positioned spaced apart from the sixth bevel gear, the second engaging portion engages the first engaging portion, the coupling rod is inserted into the second engaging portion and extends along the direction parallel to the rotary axis, the second driving wheel couples to the coupling rod and spaced apart from the second engaging portion to drive the wheel of the bicycle to move forward.

10. The bicycle of claim 8 , wherein the second driving wheel is a rubber wheel.

11. The bicycle of claim 7 , wherein the rotary axis extends along a lengthwise direction of the driving shaft, and wherein the driving body is capable of driving the main gear to rotate about the rotary axis.

12. The bicycle of claim 7 , wherein the first driving wheel is a rubber wheel.

13. A bicycle comprising:
a frame;
a wheel mounted on the frame; and
a power assisting device mounted on the frame and comprising:
a driver having a rotary axis;
a main gear driven by the driver to rotate about the rotary axis of the driver;
a first driving assembly, the first driving assembly comprising:
a first transmission rod extending along a direction perpendicular to the rotary axis;
a first bevel gear coupled to the first transmission rod and engaged with the main gear;
a second bevel gear coupled to the first transmission rod and spaced apart from the first bevel gear;
a first rotating rod positioned below the first transmission rod, extending along a direction parallel to the rotary axis;
a third bevel gear coupled to the first rotating rod and engaged with the second bevel gear; and
a first driving wheel coupled to the first rotating rod and spaced apart from the third bevel gear, and the first driving wheel abuts against a first side surface of the wheel of the bicycle for assisting the wheel of the bicycle to move forward; and

a second driving assembly, the second driving assembly compri

Assignees

• Hon Hai Prec Ind Co Ltd

Inventors

• Chen Yen-Chi
• Shih Chang-Yuan
• Hsu Shih-Hsin

Classifications

• B62M6/75 Primary

  power-driven by friction rollers or gears engaging the ground wheel · CPC title

• B62M11/10

  with bevel gear wheels (B62M11/14 takes precedence) · CPC title

• B62M13/00

  Transmissions characterised by use of friction rollers engaging the periphery of the ground wheel (for rider propelled cycles with additional source of power B62M6/35, B62M6/75) · CPC title

• B62M13/04

  with means for moving roller into driving contact with ground wheel · CPC title

• B62M6/35

  power-driven by friction rollers or gears engaging the ground wheel · CPC title