CN102490849B - Bidirectional driving device for bicycle - Google Patents

Abstract

The invention discloses a bidirectional driving device for a bicycle, which belongs to the technical field of power machinery. Through a transmission system composed of a set of bevel gears, the forward and reverse rotation motion of the main shaft is converted into a single rotation direction output, and then the power wheel of the bicycle is driven to rotate, so that the rider can pedal the bicycle forward in both directions, which can realize the bicycle in the process of riding. Alternate work with different muscle groups to avoid fatigue, especially for sports or competitive cycling. The bicycle bidirectional driving device of the invention has compact structure, the same forward and reverse driving speed ratio and similar efficiency.

Description

Bidirectional driving device for bicycle

technical field

The invention relates to a bidirectional drive device for bicycles, belonging to the technical field of mechanical transmission.

Background technique

Seen human-powered bicycle all is one-way pedaling input power at present, and when reverse pedaling, then be the idle course of not doing work. Therefore, when used in competitive sports, athletes will be prone to fatigue due to continuous use of the same muscle group when cycling.

Contents of the invention

The invention separates the main shaft of the bicycle from the driving sprocket, and uses a set of bevel gears to drive the main shaft and the driving sprocket to realize controllable transmission, so that when the human foot pedals to make the main shaft rotate forward or reverse, the driving The sprocket rotates in the direction that the bicycle advances, thereby realizing the function of two-way input of the main shaft and one-way output of the drive sprocket.

The technical scheme that the present invention adopts is as follows:

The direction of rotation of the rotary parts: the forward direction refers to the direction in which the main shaft is normally driven to rotate, otherwise it is the reverse direction.

A bicycle bidirectional driving device, which is used to provide driving force to the bicycle when pedaling forward and reverse, including frame, pedal, main shaft, main shaft bearing, drive sprocket, input bevel gear, transition bevel gear, transition bevel Gear bracket, output bevel gear, one-way clutch, centering bearing, non-return device, etc. The pedals are fixed at both ends of the main shaft, the main shaft is connected with the frame through the main shaft bearing, the main shaft coincides with the axis of the input bevel gear, and the fixed connection is realized. There is a shaft section on the main shaft, and the shaft section and the transition bevel gear bracket are passed by rolling The one-way clutch connection realized by the body, the formed one-way clutch makes when the main shaft rotates in the forward direction, the main shaft and the transition bevel gear bracket are locked through the rolling body to realize synchronous rotation, and when the main shaft rotates in the reverse direction, the main shaft and the transition cone The gear brackets are separated and do not affect each other's movement. There are three to six rotary shafts evenly distributed on the outside of the transition bevel gear bracket, and transition bevel gears are connected on the shafts; one side of the transition bevel gear meshes with the input bevel gear, and the other side meshes with the output bevel gear; the output bevel gear passes through a cup The shape structure is fixed with the driving sprocket, and the centering bearing composed of steel balls is used to realize the connection between the driving sprocket and the input bevel gear; Protrude between the center hole of the frame and the spindle bearing seat of the frame. An anti-return device is installed on the outer cylindrical surface of the main shaft bearing seat on the frame, and it is prevented when the transition bevel gear bracket is about to rotate in reverse, so that when the transition bevel gear bracket is fixed, and when the transition cone When the gear bracket rotates in the forward direction, its motion is not affected.

A bidirectional driving device for a bicycle of the present invention converts the forward and reverse rotational motion of the main shaft into a single rotational direction output through a transmission system composed of a set of bevel gears, and then drives the power wheel of the bicycle to rotate, so that the rider can pedal in both directions. The pedals drive the bicycle forward, which can alternately use different muscle groups to do work during riding, avoiding fatigue, and is especially suitable for sports or competitive bicycles. The bicycle bidirectional driving device of the invention has compact structure, the same forward and reverse driving speed ratio and similar efficiency.

Description of drawings

Accompanying drawing 1 is the front view of bicycle two-way driving device of the present invention.

Accompanying drawing 2 is the corresponding side view of accompanying drawing 1

Accompanying drawing 3 is A-A sectional view in accompanying drawing 1

Accompanying drawing 4 is the view of direction B in accompanying drawing 1

Accompanying drawing 5 is the front view of the bicycle two-way drive device that realizes the anti-reverse device by the one-way clutch.

Accompanying drawing 6 is C-C sectional view in accompanying drawing 5

In the figure: 1 frame; 2 main shaft; 3 main shaft bearing; 4 centering bearing; 5 pedal; 6 drive sprocket; 7 output bevel gear; 8 input bevel gear; 9 one-way clutch; Transition bevel gear; 12 non-return devices.

Detailed ways

Example 1:

The present invention generally comprises a vehicle frame (1), a main shaft (2), a main shaft bearing (3), a centering bearing (4), a pedal (5), a drive sprocket (6), an input bevel gear (8), a single To clutch (9), transition bevel gear bracket (10), transition bevel gear (11), output bevel gear (7), non-return device (12) etc. The pedals (5) are fixed at both ends of the main shaft (2), the main shaft (2) is connected to the vehicle frame (1) through the main shaft bearing (3), and the axis of the main shaft (2) coincides with the input bevel gear (8) and is fixed connection, a shaft section is provided on the main shaft, and the shaft section is connected with the transition bevel gear bracket (10) through a one-way clutch (9) realized by rolling elements, and the formed one-way clutch makes when the main shaft (2) turns forward When the main shaft (2) is locked with the transitional bevel gear bracket (10) through the one-way clutch (9), synchronous rotation is realized, and when the main shaft (2) reversely rotates, the main shaft (2) and the transitional bevel gear bracket (10 ) separation. There are three to six rotary shafts evenly distributed outside the transition bevel gear bracket (10), and the transition bevel gear (11) is connected on the shaft; one side of the transition bevel gear (11) meshes with the input bevel gear (8), and the other side meshes with the output bevel gear (7), the output bevel gear (7) is fixed with the driving sprocket (6) through a cup-shaped structure, and is formed by steel balls between the driving sprocket (6) and the input bevel gear (8) The centering bearing (4) realizes the connection of the slewing pair; at the same time, one side of the transition bevel gear bracket (10) is provided with a cylindrical structure from the central hole of the output bevel gear (7) to the main shaft bearing seat of the frame (1). protruding, and a zigzag structure is provided on the end face of the cylindrical structure. A non-return device (12) capable of axially sliding is installed on the outer cylindrical surface of the main shaft seat on the vehicle frame (1), and a sawtooth structure is also established on its one side end face. The zigzag structure on the non-return device (12) and the zigzag structure on the transition bevel gear bracket (10) are engaged, and when the transition bevel gear bracket (10) wants to rotate in reverse, it is prevented, so that the transition The bevel gear support (10) is stationary, and when the transitional bevel gear support (10) rotates forward, it does not affect its motion by axial avoidance.

Example 2:

The invention generally includes a vehicle frame (1), a main shaft (2), a main shaft bearing (3), a centering bearing (4), a pedal (5), a drive sprocket (6), an input bevel gear ( 8), a one-way clutch (9), a transition bevel gear support (10), a transition bevel gear (11), an output bevel gear (7), a non-return device (12) and the like. The pedals (5) are fixed at both ends of the main shaft (2), the main shaft (2) is connected to the vehicle frame (1) through the main shaft bearing (3), and the axis of the main shaft (2) coincides with the input bevel gear (8) and is fixed connection, a shaft section is provided on the main shaft, and the shaft section is connected with the transition bevel gear bracket (10) through a one-way clutch (9) realized by rolling elements, and the formed one-way clutch (9) makes the main shaft (2) When rotating in the forward direction, the main shaft (2) and the transition bevel gear bracket (10) are locked by rolling elements to realize synchronous rotation, while when the main shaft (2) rotates in the reverse direction, the main shaft (2) and the transition bevel gear bracket (10) separate. There are three to six rotary shafts evenly distributed on the outside of the transition bevel gear bracket (10), and the transition bevel gear (11) is connected to the transition bevel gear (11) through bearings on the shaft; one side of the transition bevel gear (11) meshes with the input bevel gear (8), The other side meshes with the output bevel gear (7), the output bevel gear (7) is fixed to the drive sprocket (6) through a cup-shaped structure, and steel balls pass between the drive sprocket (6) and the input bevel gear (8) The formed centering bearing (4) realizes the connection of the rotary pair; at the same time, one side of the transition bevel gear bracket (10) is provided with a cylindrical structure from the center hole of the output bevel gear (7) to the main shaft bearing of the frame (1). The seat sticks out. A non-return device (12) is installed on the outer cylindrical surface of the main shaft bearing seat on the vehicle frame (1). The non-return device (12) is a one-way clutch. During reverse rotation, the transition bevel gear bracket (10) is locked with the outer cylindrical surface of the main shaft bearing seat on the vehicle frame (1), so that the transition bevel gear bracket (10) is fixed, and when the transition bevel gear bracket ( 10) When turning forward, the transition bevel gear bracket (10) is separated from the outer cylindrical surface of the main shaft seat of the vehicle frame (1), without affecting the rotation of the transition bevel gear bracket (10).

Claims (3)

1. a reversible drive device for bicycle, be used for realizing that forward and reverse Shi Junneng of scrunching provides propulsive effort to bicycle, comprises vehicle frame (1), main shaft (2), main shaft bearing (3), alignment bearing (4), foot-operated (5), drive sprocket (6), input finishing bevel gear cuter (8), free-wheel clutch (9), transition finishing bevel gear cuter support (10), transition finishing bevel gear cuter (11), output bevel gear (7), backstop (12), it is characterized in that riding the two ends that (5) are fixed on main shaft (2), main shaft (2) connects with vehicle frame (1) by main shaft bearing (3), main shaft (2) and the dead in line of input finishing bevel gear cuter (8), and be fixedly connected, main shaft is established a shaft part on (2), connect by the free-wheel clutch (9) of being realized by rolling body between this shaft part and transition finishing bevel gear cuter support (10), formed free-wheel clutch (9) makes when main shaft (2) forward turns round, by rolling body, that main shaft (2) and transition finishing bevel gear cuter support (10) is sealed, realize synchronous revolving, and during main shaft (2) reversed turning, main shaft (2) separates with transition finishing bevel gear cuter support (10), motion is independent of each other, the outside of transition finishing bevel gear cuter support (10) is distributed with three to six axis of revolutions equably, and connects transition finishing bevel gear cuter (11) on axis of revolution, transition finishing bevel gear cuter (11) one sides and input finishing bevel gear cuter (8) engagement, opposite side and output bevel gear (7) engagement, output bevel gear (7) is fixing by a cup-shaped structure and drive sprocket (6), and drive sprocket (6) with input the alignment bearing (4) that consists of by steel ball between finishing bevel gear cuter (8) and realize that turning pair connects, simultaneously, a side of transition finishing bevel gear cuter support (10) is provided with between the spindle bearing holder of columnar structured centre hole from output bevel gear (7) and vehicle frame (1) and stretches out, backstop (12) is installed on the external cylindrical surface of the spindle bearing holder on vehicle frame (1).

2. reversible drive device for bicycle as claimed in claim 1, it is characterized in that transition finishing bevel gear cuter support (10) columnar structured from output bevel gear (7) centre hole and the spindle bearing holder of vehicle frame (1) between stretch out, and be provided with zigzag structure on columnar structured end face; Described backstop (12) in axial sliding is installed on the external cylindrical surface of the spindle bearing holder on vehicle frame (1), and one also is provided with broached-tooth design on the side end face; Zigzag structure interlock mutually on zigzag structure on backstop (12) and transition finishing bevel gear cuter support (10), and make when transition finishing bevel gear cuter support (10) is wanted reversed turning, it is stoped, transition finishing bevel gear cuter support (10) is maintained static, and when transition finishing bevel gear cuter support (10) forward turns round, do not affect its motion by axially dodging.

3. reversible drive device for bicycle as claimed in claim 1, it is characterized in that transition finishing bevel gear cuter support (10) columnar structured from output bevel gear (7) centre hole and the spindle bearing holder of vehicle frame (1) between stretch out, on the external cylindrical surface of the spindle bearing holder of vehicle frame (1), backstop (12) is installed, this backstop (12) is a free-wheel clutch, its mounting means makes when transition finishing bevel gear cuter support (10) is wanted reversed turning, transition finishing bevel gear cuter support (10) is sealed with the spindle drum external cylindrical surface of vehicle frame (1), transition finishing bevel gear cuter support (10) is maintained static, and when transition finishing bevel gear cuter support (10) forward turns round, transition finishing bevel gear cuter support (10) is separated with the spindle drum external cylindrical surface of vehicle frame (1) and do not affect the revolution of transition finishing bevel gear cuter support (10).

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