CN108466673B

CN108466673B - Method for changing bicycle function

Info

Publication number: CN108466673B
Application number: CN201810245108.5A
Authority: CN
Inventors: 段瑞永; 闫吉玲; 夏亮
Original assignee: Huanggang Normal University
Current assignee: Huanggang Normal University
Priority date: 2018-03-23
Filing date: 2018-03-23
Publication date: 2020-06-23
Anticipated expiration: 2038-03-23
Also published as: CN108466673A

Abstract

A method for changing the function of bicycle features that a group of ratchet mechanisms including pedal flywheel, ratchet wheel, ratchet seat, a pawl, two pawls, lock body, lock core block, a restoring spring and two restoring springs is arranged on the basis of existing fixed gear bicycle. The ratchet seat is fixed on the pedal large flywheel and is arranged to be a hollow structure; two pawls are symmetrically arranged in the ratchet wheel seat, one end of the pawl is connected with the ratchet wheel seat and can freely swing, and the other end of the pawl is provided with more than one ratchet and two return springs which are connected with the inside of the ratchet wheel seat; the middle part of the pedal large flywheel is sleeved at the right end of the pedal middle shaft and has a certain space with the pedal middle shaft, so that the pedal middle shaft can rotate in the pedal large flywheel; the lock body is arranged on the pedal flywheel, wherein the lock cylinder shifting block is arranged between the two pawls, and only one pawl can be pushed when the lock cylinder shifting block is arranged in a horizontal position; fixedly sleeving the ratchet wheel at the right end of the pedal middle shaft and enabling the ratchet wheel not to move; the ratchet seat is arranged on the periphery of the ratchet wheel and is coaxial with the ratchet wheel.

Description

Method for changing bicycle function

Technical Field

The invention relates to the technical field of bicycles, in particular to a method for changing functions of a bicycle.

Background

At present, a bicycle with a fixed gear (also called a dead-flying bicycle) appears in the market, and a rear flywheel and a rear wheel of the bicycle are of an integrated structure, can realize a back riding function and can be used as a special performance bicycle. The existing bicycle has only one function, and only one bicycle can be purchased if the function of the bicycle is required to be changed, so the cost is higher.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a method for changing the functions of a bicycle, which has the following specific technical scheme:

a group of ratchet mechanisms are arranged on the basis of the existing fixed gear type bicycle. The ratchet mechanism comprises a pedal large flywheel, a ratchet seat, a pawl, two pawls, a lock body, a lock cylinder shifting block, a return spring and two return springs.

The ratchet seat is fixed on the pedal large flywheel and is arranged to be of a hollow structure. Two pawls are symmetrically arranged in the ratchet seat, one end of the pawl is connected with the ratchet seat and can freely swing, and the other end of the pawl is provided with more than one ratchet and two return springs which are connected with the inside of the ratchet seat.

The middle part of the pedal large flywheel is sleeved at the right end of the pedal middle shaft and has a certain space with the pedal middle shaft, so that the pedal middle shaft can rotate in the pedal large flywheel.

The lock body is arranged on a pedal flywheel, wherein the lock cylinder shifting block is arranged between the two pawls, and the lock cylinder shifting block can only push one pawl when being arranged in a horizontal position.

Fixedly sleeving the ratchet wheel at the right end of the pedal middle shaft and enabling the ratchet wheel not to move; the ratchet seat is arranged on the periphery of the ratchet wheel and is coaxial with the ratchet wheel.

Furthermore, the right end of the left end of the pedal middle shaft is arranged to be a cube mechanism, the middle of the ratchet seat is provided with a square hole matched with the cube and sleeved on the cube, and the right side of the ratchet seat is provided with a spring retainer ring for preventing the ratchet seat from moving left and right

Has the advantages that:

the invention changes the fixed gear type bicycle in the existing market into a bicycle with changeable functions by arranging a group of ratchet mechanisms. The bicycle can be ridden in a mode commonly adopted by people and can also be ridden in a reverse direction.

Drawings

FIG. 1 is an overall assembly view of the ratchet structure of the present invention

FIG. 2 is an axial sectional view of the ratchet mechanism of the present invention in its entirety assembled

FIG. 3 is a view showing an internal structure of a ratchet mechanism according to the present invention

FIG. 4 is another axially cross-sectional view of the ratchet mechanism of the present invention in an assembled state

FIG. 5 is a connection diagram of a large pedal flywheel and a rear flywheel according to the present invention

In the figure: 1 pedal big flywheel, 2 ratchet wheels, 3 ratchet wheel seats, 4 pawls, 5 pawls, 6 lock bodies, 7 lock core shifting blocks, 8 pedal middle shafts, 9 rear flywheel, 10 return springs, 11 return springs and 12 spring retainer rings

Detailed Description

The technical solution of the present invention is further described in detail by the following embodiments, and with reference to the accompanying drawings, it should be noted that "left" and "right" appearing in the claims, the specification, and the like of the present invention refer to the same orientation as the human body during the process of riding a bicycle; and "horizontal" and "vertical" refer to the orientation of the bicycle relative to the ground when the bicycle is standing normally.

As shown in figures 1 and 2, the method for changing the functions of the bicycle is to arrange a group of ratchet mechanisms on the basis of the existing fixed gear type bicycle. The ratchet mechanism comprises a pedal large flywheel 1, a ratchet 2, a ratchet seat 3, a pawl 4, a pawl 5, a lock body 6 and a lock cylinder shifting block 7;

the ratchet wheel seat 3 is fixed on the pedal flywheel 1 and is of a hollow structure, the first pawl 4 and the second pawl 5 are symmetrically arranged inside the ratchet wheel seat 3, one end of the ratchet wheel seat is connected with the ratchet wheel seat 3 and can swing freely, and one end of the ratchet wheel seat is provided with more than one ratchet and is provided with a reset spring 10 and two reset springs 11 which are connected with the inside of the ratchet wheel seat 3.

The middle part of the pedal large flywheel 1 is sleeved at the right end of the pedal middle shaft 8 and has a certain space with the pedal middle shaft so that the pedal middle shaft 8 can rotate in the pedal large flywheel.

Fixedly sleeving the ratchet wheel 2 at the right end of the pedal middle shaft 8 and enabling the ratchet wheel not to move; the ratchet wheel seat 3 is arranged at the periphery of the ratchet wheel 2 and is coaxial with the ratchet wheel 2.

The lock body 6 is arranged on the pedal flywheel 1, wherein the lock cylinder shifting block 7 is positioned between the first pawl 4 and the second pawl 5, when a key is inserted into the lock body 6 and is screwed, the lock cylinder shifting block 7 can push the first pawl 4 or the second pawl 5, so that the first pawl 4 or the second pawl 5 is separated from the ratchet 2, and simultaneously, the return spring 10 or the return spring 11 correspondingly connected with the first pawl 4 or the second pawl 5 is compressed.

The right side of the ratchet mechanism is provided with a pedal connecting rod and a right pedal (not marked in the figure).

As shown in fig. 5, the pedal flywheel 1 is linked with the rear flywheel 9 of the bicycle by a chain.

When the bicycle is ridden normally: the key is turned to an open position, the lock cylinder shifting block 7 is in a horizontal position at the moment, the lock cylinder shifting block 7 pushes the two pawls 5 to separate from the ratchet wheel 2, meanwhile, the two return springs 11 are compressed, the ratchet wheel 2 is clamped by the pawl 4 under the pushing of the return spring 10, the right end of the pedal middle shaft 8 is connected with the pedal large flywheel 1 through the pawl 4 and the ratchet wheel 2, the pedal middle shaft 8 can act on the pawl 4 through the ratchet wheel 2 to drive the pedal large flywheel 1 to rotate when a pedal is pedaled, and the bicycle can be ridden in the forward direction at the moment; when the pedal stops stepping, the pedal middle shaft 8 and the ratchet wheel 2 stop rotating at the same time, at the moment, the pedal large flywheel 1 and the pawl 4 rotate clockwise relative to the ratchet wheel 2 under the driving of the rear flywheel 9, the pawl 4 is not limited to the ratchet wheel 2, and the bicycle can slide.

Method of transforming function: the key is turned to a dead locking position, the lock cylinder shifting block 7 is in a vertical position at the moment, the ratchet 2 is clamped by the first pawl 4 and the second pawl 5 under the pushing of the first return spring 10 and the second return spring 11, the right end of the pedal middle shaft 8 is connected with the pedal large flywheel 1 through the meshing action between the first pawl 4 and the second pawl 5 and the ratchet 2, the pedal is pedaled clockwise, the ratchet 2 rotates clockwise to act on the first pawl 4 and then acts on the pedal large flywheel 1, the pedal large flywheel 1 can be driven to rotate clockwise, at the moment, the two pawls 5 cannot act on the ratchet 2, and the bicycle runs forwards; when the pedal is pedaled anticlockwise, the ratchet wheel 2 rotates anticlockwise to act on the two pawls 5 and further acts on the pedaled large flywheel 1, the pedaled large flywheel 1 can be driven to rotate anticlockwise, the pawl 4 does not act on the ratchet wheel 2 at the moment, and the bicycle can run backwards.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of changing a function of a bicycle, comprising: arranging a group of ratchet mechanisms; the ratchet mechanism comprises a pedal large flywheel, a ratchet seat, a pawl, two pawls, a lock body, a lock cylinder shifting block, a return spring and two return springs;

the ratchet seat is fixed on the pedal large flywheel and is arranged to be a hollow structure; a pawl and two pawls are symmetrically arranged in the ratchet wheel seat, one end of the pawl is connected with the ratchet wheel seat and can freely swing, and the other end of the pawl is provided with more than one ratchet and is correspondingly provided with a return spring and two return springs which are connected with the inside of the ratchet wheel seat;

the middle part of the pedal large flywheel is sleeved at the right end of the pedal middle shaft and has a certain space with the pedal middle shaft, so that the pedal middle shaft can rotate in the pedal middle shaft;

the lock body is arranged on the pedal big flywheel, the lock cylinder shifting block is arranged between the first pawl and the second pawl, and the lock cylinder shifting block can only push one pawl or two pawls when being arranged in a horizontal position;

fixedly sleeving the ratchet wheel at the right end of the pedal middle shaft in a sleeving manner, and enabling the ratchet wheel not to move; arranging the ratchet seat at the periphery of the ratchet wheel and coaxially with the ratchet wheel;

a key is inserted into the lock body and is twisted to an opening position, the lock cylinder shifting block is at a first horizontal position, the lock cylinder shifting block pushes the two pawls to be separated from the ratchet wheel, the two return springs are compressed, the ratchet wheel is clamped by the pawl under the pushing of the return spring, the right end of the pedal middle shaft is connected with the pedal large flywheel through the pawl and the ratchet wheel, the pedal is acted on the pawl by the ratchet wheel through the pedal middle shaft to drive the pedal large flywheel to rotate, and the bicycle is ridden in the forward direction; the pedal stops pedaling, the pedal middle shaft and the ratchet wheel stop rotating at the same time, the pedal big flywheel and a pawl are driven by the rear flywheel to rotate clockwise relative to the ratchet wheel, the pawl is not limited to the ratchet wheel, and the bicycle slides;

the key is turned to a second opening position, the lock cylinder shifting block is located at a second horizontal position and is opposite to the first horizontal position, the lock cylinder shifting block pushes the pawl to be separated from the ratchet wheel, the return spring is compressed, the two pawls clamp the ratchet wheel under the pushing of the two return springs, the right end of the pedal middle shaft is connected with the pedal large flywheel through the two pawls and the ratchet wheel, the pedal acts on the two pawls through the pedal middle shaft by the ratchet wheel to drive the pedal large flywheel to rotate, and the bicycle is ridden backwards; the pedal stops pedaling, the pedal middle shaft and the ratchet wheel stop rotating at the same time, the pedal large flywheel and the two pawls rotate anticlockwise relative to the ratchet wheel under the driving of the rear flywheel of the bicycle, the two pawls do not limit the ratchet wheel, and the bicycle slides; the key is turned to a dead locking position, the lock core shifting block is in a vertical position, the ratchet wheel is clamped by the first pawl and the second pawl under the pushing of the first return spring and the second return spring, the right end of the pedal middle shaft is connected with the pedal large flywheel through the meshing action between the first pawl and the second pawl and the ratchet wheel, the pedal is pedaled clockwise, the ratchet wheel rotates clockwise to act on the first pawl and further acts on the pedal large flywheel to drive the pedal large flywheel to rotate clockwise, at the moment, the two pawls do not act on the ratchet wheel, and the bicycle runs forwards; the pedal is pedaled anticlockwise, the ratchet wheel rotates anticlockwise to act on the two pawls and further acts on the pedal large flywheel to drive the pedal large flywheel to rotate anticlockwise, at the moment, the pawl cannot act on the ratchet wheel, and the bicycle runs backwards.