TRANSMISSION STRUCTURE FOR BICYCLE

• US 20200130776A1
• Filed: 11/26/2018
• Published: 04/30/2020
• Est. Priority Date: 10/25/2018
• Status: Active Grant

• Current Assignee: Shenzhen Nanbo Automation Equipment Company Limited
• Original Assignee: Shenzhen Nanbo Automation Equipment Company Limited
• Inventors: LUO, Liyuan
• Granted Patent: US 10,882,586 B2
• Time in Patent Office: Days
• CPC Class Codes: B62M 1/28 characterised by the use of flexible drive members, e.g. chains
• CPC Class Codes: B62M 1/30 characterised by the use of intermediate gears
• CPC Class Codes: B62M 2009/002 Non-circular chain rings or sprockets
• CPC Class Codes: B62M 21/00 Transmissions characterised by use of resilient elements therein
• CPC Class Codes: B62M 9/02 of unchangeable ratio

Abstract

A transmission structure for a bicycle includes two opposite transmission units. Each of the transmission units includes a linear reciprocating pedaling mechanism, a transmission module which is in transmission connection with the linear reciprocating pedaling mechanism, and a resetting module connected with the transmission module. The transmission modules of the two transmission units are connected with a power output mechanism through a unidirectional transmission mechanism. The transmission module includes a first driven wheel and a first transmission gear configured to be coaxial with the first driven wheel. The resetting module includes a connecting piece and an elastic piece. The connecting piece is connected with the first transmission gear. The elastic piece is connected with the connecting piece.

Claims

1. A transmission structure for a bicycle, comprising two opposite transmission units, wherein each of the transmission units comprises a linear reciprocating pedaling mechanism and a transmission module which is in transmission connection with the linear reciprocating pedaling mechanism;

and the transmission modules of the two transmission units are connected with a power output mechanism through a unidirectional transmission mechanism, each of the transmission units further comprises a resetting module connected with the transmission module;

the transmission module comprises a first driven wheel and a first transmission gear configured to be coaxial with the first driven wheel;

the resetting module comprises a connecting piece and an elastic piece;

the connecting piece is connected with the first transmission gear, and the elastic piece is connected with the connecting piece.

2. The transmission structure according to claim 1, wherein the transmission module further comprises a second driven wheel and a transmission connection device;

and the first driven wheel is connected with the second driven wheel through the transmission connection device.

3. The transmission structure according to claim 2, wherein the transmission connection device is provided with an auxiliary wheel rotatably connected therewith.

4. The transmission structure according to claim 1, wherein the linear reciprocating pedaling mechanism comprises a linear guide rail which is disposed linearly and pedal which is in sliding connection with the linear guide rail;

the linear guide rail is parallel to one side of the transmission connection device; and

the pedal is fixedly connected with the side of the transmission connection device.

5. The transmission structure according to claim 1, wherein the connecting piece is a gear engaging plate;

the gear engaging plate is rotatably connected through a rotating shaft fixed to a bicycle frame;

one end of the gear engaging plate is provided with a transmission tooth which is in transmission connection with the first transmission gear, and the other end of the gear engaging plate is provided with a hanging portion rotatably connected therewith.

6. The transmission structure according to claim 1, wherein the other end of the elastic piece of each of the two transmission units is connected with a fixing piece.

7. The transmission structure according to claim 6, wherein the fixing piece is an adjustable fixing piece and comprises a fixing seat, a tapered screw, a fixing head, a locking head, two adjusting threaded rods and two sliding pieces;

the fixing seat is provided with two adjusting threaded rod holes used to penetrate the two adjusting threaded rods through threads and a screw hole used to penetrate the tapered screw through threads;

the two sliding pieces are respectively sleeved on the fixing seat in a sliding way, and are positioned between the corresponding adjusting threaded rod hole and the screw hole;

the fixing head is in threaded connection with lower ends of the adjusting threaded rods and is fixedly connected with the other end of the elastic piece; and

the locking head is in threaded connection with a lower end of the tapered screw.

8. The transmission structure according to claim 7, wherein a process amplification gear set is disposed between the connecting piece and the first transmission gear.

9. The transmission structure according to claim 1, wherein the elastic piece is selected from one of a tension spring, a pressure spring, a coil spring, a spring and a torsional spring.