A power-assist system for a bicycle by which the bicycle can be operated in various modes. There is a pedal-alone mode, a power-assist mode, a combined pedaling and power-assist mode, and a coasting mode. An overriding clutch is positioned between the pedal section and the sprocket, and a second ove
A power-assist system for a bicycle by which the bicycle can be operated in various modes. There is a pedal-alone mode, a power-assist mode, a combined pedaling and power-assist mode, and a coasting mode. An overriding clutch is positioned between the pedal section and the sprocket, and a second overriding clutch is positioned between a speed reducing gear section, driven by a motor, and a power-assist shaft located in the crank housing.
대표청구항▼
1. A pedal- and motor-assist power system for a bicycle which has, at least one drive wheel, and a bicycle frame with front and rear ends, said system comprising:a) a pedal section comprising:i. first and second pedal members;ii. a crank shaft connecting the pedal members;iii. a crank housing in whi
1. A pedal- and motor-assist power system for a bicycle which has, at least one drive wheel, and a bicycle frame with front and rear ends, said system comprising:a) a pedal section comprising:i. first and second pedal members;ii. a crank shaft connecting the pedal members;iii. a crank housing in which the crank shaft is located;b) a sprocket section having a chain-and-sprocket drive connection to said drive wheel;c) a motor section;d) a speed-reducing gear section connecting to said motor section and having a gear section drive output;e) a power assist drive section comprising a power assist drive member concentrically mounted around said crank shaft and having a power-assist drive connection between the gear section drive output and the sprocket section;f) said system being characterized in that the sprocket section has a first pedal overrunning drive connection with said pedal section and the power-assist drive connection has a second overrunning drive connection; whereby said bicycle is able to operate in four operating modes, namely:i. a power-assist mode where a bicycle rider is pedaling to supply power, and the power-assist section is providing power;ii. a pedal-only mode where power is being supplied solely by pedaling the bicycle;iii. the power-assist-only mode where the bicycle rider is not providing power by pedaling, but power is supplied by the power output section;iv. a coasting no-power mode where the bicycle is traveling with the pedal section stationary, and no power is being supplied by either the pedal section or the power-assist drive section, andg) said power-assist drive member having a fixed drive connection to the sprocket section and the power-assist-overrunning drive connection is between the power-assist drive member and the gear section drive output.2. A pedal- and motor-assist power system for a bicycle which has, at least one drive wheel, and a bicycle frame with front and rear ends, said system comprising:a) a pedal section comprising:i. first and second pedal members;ii. a crank shaft connecting the pedal members;iii. a crank housing in which the crank shaft is located;b) a sprocket section having a chain-and-sprocket drive connection to said drive wheel;c) a motor section;d) a speed-reducing gear section connecting to said motor section and having a gear section drive output;e) a power assist drive section comprising a power assist drive member concentrically mounted around said crank shaft and having a power-assist drive connection between the gear section drive output and the sprocket section;f) said system being characterized in that the sprocket section has a first pedal overrunning drive connection with said pedal section and the power-assist drive connection has a second overrunning drive connection; whereby said bicycle is able to operate in four operating modes, namely:i. a power-assist mode where a bicycle rider is pedaling to supply power, and the power-assist section is providing power;ii. a pedal-only mode where power is being supplied solely by pedaling the bicycle;iii. the power-assist-only mode where the bicycle rider is not providing power by pedaling, but power is supplied by the power output section;iv. a coasting no-power mode where the bicycle is traveling with the pedal section stationary, and no power is being supplied by either the pedal section or the power-assist drive section, andg) said power-assist drive member having a tubular configuration with first and second power-assist member portions on opposite sides of the bicycle, said power-assist drive member and said crank housing being positioned concentrically around a center axis of said crank shaft.3. The system as recited in claim 2, wherein the second end portion of the power-assist drive member has a fixed power connection to the drive sprocket, and the first end portion of the power-assist drive member connects with the gear section drive output through said power-assist overrunning drive connection.4. The system as recited in claim 3, wherein said power-assist drive member is rotatably mounted on bearings that have an operative load-bearing relationship with said crank housing, and said crank shaft is at least in part supported by bearings in load-bearing relationship with said power-assist drive member so that said power-assist drive member and said crank shaft are rotatable relative to one another.5. A pedal- and motor-assist power system for a bicycle which has, at least one drive wheel, and a bicycle frame with front and rear ends, said system comprising:a) a pedal section comprising:i. first and second pedal members;ii. a crank shaft connecting the pedal members;iii. a crank housing in which the crank shaft is located;b) a sprocket section having a chain-and-sprocket drive connection to said drive wheel;c) a motor section;d) a speed-reducing gear section connecting to said motor section and having a gear section drive output;e) a power assist drive section comprising a power assist drive member having a power-assist drive connection between the gear section drive output and the sprocket section;f) said system being characterized in that the sprocket section has a first pedal overrunning drive connection with said pedal section and the power-assist drive connection has a second overrunning drive connection; whereby said bicycle is able to operate in four operating modes, namely:i. a power-assist mode where a bicycle rider is pedaling to supply power, and the power-assist section is providing power;ii. a pedal-only mode where power is being supplied solely by pedaling the bicycle;iii. the power-assist-only mode where the bicycle rider is not providing power by pedaling, but power is supplied by the power output section; andiv. a coasting no-power mode where the bicycle is traveling with the pedal section stationary, and no power is being supplied by either the pedal section or the power-assist drive section,g) said motor being a high-speed motor that is driven by petroleum-based fuel and operates at least 1000 RPM, said motor having a sheave-and-belt drive connection with said speed-reducing gear section, whereby tension forces exerted on the sheave-and-belt drive from the motor to the speed-reducing gear section are substantially less than forces imposed in the drive connection between the speed-reducing gear section and the power-assist drive member.6. The system as recited in claim 5, wherein said motor is located proximate to an upper rear portion of said frame, and said speed-reducing gear section is located closely adjacent to said crank housing, so that a first distance of the motor to the speed-reducing gear section is substantially greater than a distance from the speed-reducing gear section to the crank housing.7. A pedal- and motor-assist power system for a bicycle which has, at least one drive wheel, and a bicycle frame with front and rear ends and first and second sides, said system comprising:a) a pedal section comprising:i. first and second pedal members;ii. a crank shaft connecting the pedal members;iii. a crank housing in which the crank shaft is located;b) a sprocket section having a chain-and-sprocket drive connection to said drive wheel;c) a motor section;d) a speed-reducing gear section connecting to said motor section and having a gear section drive output;e) a power assist drive section comprising a power assist drive member concentrically mounted around said crank shaft and having a power-assist drive connection between the gear section drive output and the sprocket section;f) said system being characterized in that the sprocket section has a first pedal overrunning drive connection with said pedal section and the power-assist drive connection has a second over-running drive connection; whereby said bicycle is able to operate in four operating modes, namely:i. a power-assist mode where a bicycle rider is pedaling to supply power, and the power-assist section is providing power;ii. a pedal-only mode where power is being supplied solely by pedaling the bicycle;iii. the power-assist-only mode where the bicycle rider is not providing power by pedaling, but power is supplied by the power output section;iv. a coasting no-power mode where the bicycle is traveling with the pedal section stationary, and no power is being supplied by either the pedal section or the power-assist drive section, andg) said sprocket section and said first pedal member being nearer to a second side of the frame, and said power-assist drive member having a second end portion that connects to said sprocket drive, and a first end portion that is nearer to a first side of the frame, said first end portion connecting through the power-assist overrunning drive connection to the gear section drive output.8. A pedal- and motor-assist power system for a bicycle which has, at least one drive wheel, and a bicycle frame with front and rear ends, said system comprising:a) a pedal section comprising:i. first and second pedal members;ii. a crank shaft connecting the pedal members;iii. a crank housing in which the crank shaft is located;b) a sprocket section having a chain-and-sprocket drive connection to said drive wheel;c) a speed-reducing gear section connecting to said motor section and having a gear section drive output;d) a power assist drive section comprising a power assist drive member concentrically mounted around said crank shaft and having a power-assist drive connection between the gear section drive output and the sprocket section;e) a high-speed motor that is driven by petroleum-based fuel and operates at least 1000 RPM, said motor having a sheave-and-belt drive connection with said speed-reducing gear section, whereby tension forces exerted on the sheave-and-belt drive from the motor to the speed-reducing gear section are substantially less than forces imposed in the drive connection between the speed-reducing gear section and the power-assist drive member.9. A pedal- and motor-assist power system for a bicycle which has, at least one drive wheel, and a bicycle frame with front and rear ends, said system comprising:a) a pedal section comprising:i. first and second pedal members;ii. a pedal drive housing which is mounted in the frame at a drive location, with said pedal members being mounted to said housing;b) a sprocket section at said drive location and having a drive connection to said drive wheel;c) a motor section mounted at a motor location of said bicycle that is spaced from said drive location;d) a speed-reducing gear section connecting to said motor section and having a gear section drive output, said speed reducing gear section being located at a speed reducing gear section location that is spaced from said drive location and motor location;e) a power assist drive section comprising a power assist drive member concentrically mounted around said crank shaft and having a power-assist drive connection between the gear section drive output and the sprocket section;f) said system being characterized in that the sprocket section has a first pedal overrunning drive connection with said pedal section and the power-assist drive connection has a second overrunning drive connection; whereby said bicycle is able to operate in four operating modes, namely:i. a power-assist mode where a bicycle rider is pedaling to supply power, and the power-assist section is providing power;ii. a pedal-only mode where power is being supplied solely by pedaling the bicycle;iii. the power-assist-only mode where the bicycle rider is not providing power by pedaling, but power is supplied by the power output section; andiv. a coasting no-power mode where the bicycle is traveling with the pedal section stationary, and no power is being supplied by either the pedal section or the power-assist drive section,g) said power-assist drive member having a fixed drive connection to the sprocket section and the power-assist-overrunning drive connection is between the power-assist drive member and the gear section drive output.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (11)
Sakai, Koichi; Otaki, Ryoichi; Machida, Hisashi; Ozawa, Atsushi, Auxiliary device for bicycle with traction roller type gear.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.