CN211642499U

CN211642499U - Special chain wheel for booster bicycle

Info

Publication number: CN211642499U
Application number: CN202020174441.4U
Authority: CN
Inventors: 李长清
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-13
Filing date: 2020-02-13
Publication date: 2020-10-09
Anticipated expiration: 2030-02-13

Abstract

The utility model discloses a special chain wheel of helping hand bicycle, including the chain wheel, the inboard of chain wheel is provided with the one-way axle of second, the inboard of the one-way axle of second is provided with first one-way axle, the inboard of first one-way axle is provided with the axis, the outside of chain wheel is provided with the helping hand wheel, one side of helping hand wheel is provided with the helping hand drive wheel, be provided with the chain between second one-way axle and the helping hand drive wheel, first meshing groove has been seted up in the outside of axis, third meshing groove has been seted up to the inboard of second one-way axle, the position department that corresponds the third meshing groove in the outside of first one-way axle is provided with first card protruding, the position department that corresponds the second meshing groove in the outside of first one-way axle is provided with third card protruding, the outside of second one-way axle is provided with the second card protruding; the boosting directly intervenes in the original vehicle speed change system, and the maximum energy efficiency utilization rate is exerted.

Description

Special chain wheel for booster bicycle

Technical Field

The utility model belongs to the technical field of the moped, concretely relates to special chain wheel of moped.

Background

The existing bicycle power assisting system mostly uses a motor for assisting power. The motor is divided into three major categories, namely a hub motor, a middle motor and a tire pressure friction motor.

The existing hub motor is simple to mount but difficult to maintain, can cause unbalanced gravity center, has higher general power and insufficient climbing torque, and has insufficient rotating speed during high-speed riding; the middle motor is mostly a direct drive middle shaft linkage pedal, is difficult to maintain and high in price, and can bring electromagnetic resistance when a user rides without assistance due to partial design; the tire pressure friction motor basically has no torque, the waste of energy efficiency is large, and the abrasion of the tire is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a special chain wheel for a power-assisted bicycle, which solves the problems that the existing hub motor proposed in the background technology is simple in installation and difficult in maintenance, can cause unbalanced center of gravity, has larger general power and insufficient climbing torque, and has insufficient rotating speed during high-speed riding; the middle motor is mostly a direct drive middle shaft linkage pedal, is difficult to maintain and high in price, and can bring electromagnetic resistance when a user rides without assistance due to partial design; the tire pressure friction motor has basically no torque, and the waste of energy efficiency is large, so that the problem of tire abrasion is also increased.

In order to achieve the above object, the utility model provides a following technical scheme: the special chain wheel for the power-assisted bicycle comprises a chain wheel, wherein a second unidirectional shaft is arranged on the inner side of the chain wheel, a first unidirectional shaft is arranged on the inner side of the second unidirectional shaft, a middle shaft is arranged on the inner side of the first unidirectional shaft, a power-assisted wheel is arranged on the outer side of the chain wheel, a power-assisted driving wheel is arranged on one side of the power-assisted wheel, a chain is arranged between the second unidirectional shaft and the power-assisted driving wheel, a first meshing groove is formed in the outer side of the middle shaft, a third meshing groove is formed in the inner side of the second unidirectional shaft, a second meshing groove is formed in the inner side of the chain wheel, a first clamping protrusion is arranged on the outer side of the first unidirectional shaft at a position corresponding to the third meshing groove, a third clamping protrusion is arranged on the outer side of the first unidirectional shaft at a position corresponding to the second meshing groove, a second clamping protrusion is arranged on the outer side of the second unidirectional shaft, and a fourth clamping protrusion is arranged on the, and a fourth meshing groove is formed in the position, corresponding to the second clamping protrusion, of the inner side of the crankset.

Preferably, the middle shaft and the first one-way shaft are fixed with the first engaging groove through a fourth clamping protrusion in a clamping manner.

Preferably, the second one-way shaft and the first one-way shaft are fixed by the first clamping protrusion and the third meshing groove in a clamping manner.

Preferably, the first one-way shaft and the chain wheel are fixed in a clamping mode through a third clamping protrusion and a second meshing groove.

Preferably, the second one-way shaft and the chain wheel are fixed by the second clamping protrusion and the fourth meshing groove in a clamping mode.

Preferably, the third clamping protrusion and the first one-way shaft and the first clamping protrusion and the first one-way shaft are of an integrated structure.

Preferably, the central shaft is of a cylindrical structure.

Preferably, the power-assisted driving wheel is connected with the second one-way shaft through a chain.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, former car speed change system is directly intervene to the helping hand, the biggest efficiency utilization ratio of performance.

2. The utility model discloses in, solved the abrupt slope and ride and cross-country when riding, the overload that the moment of torsion was brought inadequately has also solved good road conditions when riding, and the invalid helping hand output that the rotational speed leads to inadequately.

3. The utility model discloses in, pedal when the helping hand intervenes and not rotate along with the helping hand, nevertheless can pedal can drive the wheel with the helping hand simultaneously, when no helping hand is ridden or is slided, the helping hand system can not bring any resistance.

4. The utility model discloses in, let helping hand system and frame relative separation, also let helping hand system overall design compacter, light, also do benefit to the waterproof design of helping hand system, helping hand power is more reasonable with the rotational speed, promotes the efficiency utilization ratio, increases continuation of the journey mileage.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of a plane of depression structure of the present invention;

FIG. 3 is a schematic side sectional view of the present invention;

in the figure: 1. a middle shaft; 2. a first unidirectional shaft; 3. a second unidirectional shaft; 4. a chain wheel; 5. a booster wheel; 6. a power-assisted driving wheel; 7. a first engaging groove; 8. a second engaging groove; 9. a third engaging groove; 10. a first snap projection; 11. a second snap projection; 12. and a third snap projection.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the special chain wheel for the power-assisted bicycle comprises a chain wheel 4, wherein a second unidirectional shaft 3 is arranged on the inner side of the chain wheel 4, a first unidirectional shaft 2 is arranged on the inner side of the second unidirectional shaft 3, a middle shaft 1 is arranged on the inner side of the first unidirectional shaft 2, a power-assisted wheel 5 is arranged on the outer side of the chain wheel 4, a power-assisted driving wheel 6 is arranged on one side of the power-assisted wheel 5, a chain is arranged between the second unidirectional shaft 3 and the power-assisted driving wheel 6, a first meshing groove 7 is formed in the outer side of the middle shaft 1, a third meshing groove 9 is formed in the inner side of the second unidirectional shaft 3, a second meshing groove 8 is formed in the inner side of the chain wheel 4, a first clamping protrusion 10 is arranged on the outer side of the first unidirectional shaft 2 corresponding to the position of the third meshing groove 9, a third clamping protrusion 12 is arranged on the outer side of the first unidirectional shaft 2 corresponding to the position of the second meshing groove 8, a second clamping protrusion 11 is arranged on the outer side of the second unidirectional shaft 3, a fourth meshing groove is formed in the position, corresponding to the second clamping protrusion 11, of the inner side of the crankset 4.

In order to facilitate the connection between the bottom bracket 1 and the first unidirectional shaft 2, in this embodiment, preferably, the bottom bracket 1 and the first unidirectional shaft 2 are fixed to the first engaging groove 7 by a fourth locking protrusion.

In order to conveniently fix the second one-way shaft 3 and the first one-way shaft 2, in this embodiment, it is preferable that the second one-way shaft 3 and the first one-way shaft 2 are fixed by engaging the first engaging protrusion 10 with the third engaging groove 9.

In order to conveniently fix the first one-way shaft 2 and the crankset 4, in the embodiment, preferably, the first one-way shaft 2 and the crankset 4 are fixed by the third clamping protrusion 12 and the second engaging groove 8 in a clamping manner.

In order to conveniently fix the second one-way shaft 3 and the chain wheel 4, in this embodiment, it is preferable that the second one-way shaft 3 and the chain wheel 4 are fixed by the second locking protrusion 11 and the fourth engaging groove.

In order to tightly combine the third clamping protrusion 12 with the first unidirectional shaft 2 and the first clamping protrusion 10 with the first unidirectional shaft 2, in this embodiment, it is preferable that the third clamping protrusion 12 and the first unidirectional shaft 2 and the first clamping protrusion 10 and the first unidirectional shaft 2 are of an integral structure.

In order to facilitate the fixing of the bottom bracket 1, in the present embodiment, it is preferable that the bottom bracket 1 has a cylindrical structure.

In order to facilitate the transmission of the power-assisted driving wheel 6 and the second one-way shaft 3, in the embodiment, the power-assisted driving wheel 6 and the second one-way shaft 3 are preferably connected by a chain.

The utility model discloses a theory of operation and use flow: after the device is installed, when the chain wheel 4 independently rotates forwards, the power-assisted wheel 5 rotates along with the chain wheel, the first one-way shaft 2 and the second one-way shaft 3 can slide, and the middle shaft 1 and the power-assisted driving wheel 6 can not rotate; when the power-assisted driving wheel 6 rotates forwards, the first one-way shaft 2 is locked to the chain wheel 4 to rotate together, then the power-assisted wheel 5 is driven to rotate, the first one-way shaft 2 slides, and the middle shaft 1 cannot rotate; when the pedal drives the middle shaft 1 to rotate forwards, the first one-way shaft 2 is locked to the chain wheel 4 to rotate together, the power-assisted wheels 5 are also driven to rotate together, the second one-way shaft 3 slides, and the power-assisted driving wheels 6 cannot rotate.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Special chain wheel of moped, including chain wheel (4), its characterized in that: a second one-way shaft (3) is arranged on the inner side of the chain wheel (4), a first one-way shaft (2) is arranged on the inner side of the second one-way shaft (3), a middle shaft (1) is arranged on the inner side of the first one-way shaft (2), a power-assisted wheel (5) is arranged on the outer side of the chain wheel (4), a power-assisted driving wheel (6) is arranged on one side of the power-assisted wheel (5), a chain is arranged between the second one-way shaft (3) and the power-assisted driving wheel (6), a first meshing groove (7) is formed in the outer side of the middle shaft (1), a third meshing groove (9) is formed in the inner side of the second one-way shaft (3), a second meshing groove (8) is formed in the inner side of the chain wheel (4), a first clamping protrusion (10) is arranged at a position, corresponding to the third meshing groove (9), on the outer side of the first one-way shaft (2), a third clamping protrusion (12) is arranged at a position, corresponding to the second meshing, a second clamping protrusion (11) is arranged on the outer side of the second one-way shaft (3), a fourth clamping protrusion is arranged at the position, corresponding to the first meshing groove (7), of the inner surface of the first one-way shaft (2), and a fourth meshing groove is formed in the position, corresponding to the second clamping protrusion (11), of the inner side of the crankset (4).

2. The special chain wheel for the moped according to claim 1, wherein: the middle shaft (1) and the first one-way shaft (2) are fixedly clamped with the first meshing groove (7) through a fourth clamping protrusion.

3. The special chain wheel for the moped according to claim 1, wherein: the second one-way shaft (3) and the first one-way shaft (2) are clamped and fixed with the third meshing groove (9) through the first clamping protrusion (10).

4. The special chain wheel for the moped according to claim 1, wherein: the first one-way shaft (2) and the chain wheel (4) are clamped and fixed with the second meshing groove (8) through a third clamping protrusion (12).

5. The special chain wheel for the moped according to claim 1, wherein: the second one-way shaft (3) and the chain wheel (4) are fixedly clamped with the fourth meshing groove through a second clamping protrusion (11).

6. The special chain wheel for the moped according to claim 1, wherein: the third clamping protrusion (12) and the first one-way shaft (2) and the first clamping protrusion (10) and the first one-way shaft (2) are of an integrated structure.

7. The special chain wheel for the moped according to claim 1, wherein: the middle shaft (1) is of a cylindrical structure.

8. The special chain wheel for the moped according to claim 1, wherein: the power-assisted driving wheel (6) is connected with the second one-way shaft (3) through a chain.