CN212423371U

CN212423371U - Two-stage speed-changing bicycle

Info

Publication number: CN212423371U
Application number: CN201920541564.4U
Authority: CN
Inventors: 李守进
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-20
Filing date: 2019-04-20
Publication date: 2021-01-29
Anticipated expiration: 2029-04-20

Abstract

The utility model discloses a two-stage variable speed bicycle, including the bicycle support, install the axis on the bicycle support, in epaxial chain wheel group that is equipped with, in epaxial gear A still installs, gear A goes up the cooperation and is equipped with mobilizable gear B, a fixed sprocket on the gear B, install one-way bearing in the gear B, be equipped with the activity hinge on the gear B support, the one end of activity hinge support gear B support, the other one end of gear B support is connected by the speed regulator on wire rope and hand (hold) next door, install sun gear on the bicycle rear axle ratchet, sun gear one side is equipped with the planet carrier, install planetary gear in the planet carrier. Compared with the prior art, the utility model the advantage lie in: the bicycle is easy to start, can run at high speed, and has powerful functions and simple technology; the operation is reliable; the maintenance is convenient; the cost is low; energy-saving and environment-friendly, has good market prospect and brings great convenience to people riding bicycles.

Description

Two-stage speed-changing bicycle

Technical Field

The utility model relates to a bicycle field specifically indicates a two-stage variable speed bicycle.

Background

The transmission system of a bicycle is a critical part of the bicycle, and the function of the transmission system is literally. The bicycle mainly transmits the power of human body to a wheel set system of the bicycle, thereby enabling the bicycle to generate the power capable of running.

At present, bicycle transmission systems are mainly divided into two main types, one is a variable-speed transmission system, and the other is a single-speed transmission system. The type of transmission chosen for different road conditions and different riding styles is also inconsistent. There are also two-stage or multi-stage transmissions that are used to achieve higher speeds. The one-stage single speed of the bicycle in the prior art has the defects of slow running; the speed of the variable speed bicycle is also the first-stage transmission speed after all, which is not very fast; bicycles with more than two stages can run fast, but the starting is difficult. There is also a variation, which is not only complicated but also expensive to maintain, like the transmission of a motor vehicle gearbox, and is therefore rarely used today. The common bicycle in the prior art has the advantages that the speed is not fast because the speed ratio is one step no matter the bicycle is single-speed or variable-speed, and the pleasure caused by the speed cannot be fully played for bicycle enthusiasts with extraordinary physical abilities. For the current two-stage or multi-stage transmission bicycle, if the speed ratio is too large, the bicycle is difficult to start, the bicycle is difficult to ascend uphill, and the purpose of enabling the bicycle to run faster can not be achieved even if the speed ratio is too small. And a rare internal gear transmission device has high complexity and inconvenient maintenance.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a to above problem and not only make the bicycle start easily, but also the bicycle can high-speed operation. The technology is simple; the operation is reliable; the maintenance is convenient; the cost is low; the technical scheme is energy-saving and environment-friendly.

In order to solve the technical problem, the utility model provides a technical scheme does: a two-stage speed-changing bicycle comprises a bicycle support, a middle shaft is arranged on the bicycle support, the middle shaft is provided with a middle shaft chain wheel group, the middle shaft is also provided with a gear A, the gear A is provided with a gear B in a matching way, a one-way bearing is arranged in the gear B, a chain wheel is also fixed on the gear B, a movable hinge is arranged on the bracket of the gear B, one end of the gear B bracket is arranged on the movable hinge, the other end of the gear B bracket is connected with a speed regulator beside the bicycle handlebar through a steel wire rope, a ratchet wheel of the rear wheel shaft of the bicycle is provided with a sun gear, one side of the sun gear is provided with a planet carrier, a planetary gear is arranged in the planet carrier, a gear ring is arranged on the radial outer side of the planetary gear in a matching way, the gear ring axial outside is equipped with the ring gear sprocket, the planet carrier axial outside is equipped with the planet carrier sprocket.

Compared with the prior art, the utility model the advantage lie in: the bicycle is easy to start, can run at high speed, and has powerful functions and simple technology; the operation is reliable; the maintenance is convenient; the cost is low; energy-saving and environment-friendly, has good market prospect and brings great convenience to people riding bicycles.

As an improvement, the planet carrier is provided with three planet gears, and the planet gears are installed in the planet carrier in a matching mode.

As an improvement, the sun gear is fixed on a ratchet wheel of a rear wheel shaft of the bicycle, and the gear ring and the planet carrier are respectively positioned at two sides of the sun gear.

As an improvement, the gear B is arranged below the middle shaft, one end of the gear B support is supported by a movable hinge, and the other end of the gear B support is connected with a speed changer beside a bicycle handlebar through a steel wire rope.

As an improvement, a one-way bearing is installed in the gear B, and the one-way bearing is used for locking the gear ring chain wheel in a one-way mode through a chain wheel and a chain on the gear B.

Drawings

FIG. 1 is a schematic view of a two-speed bicycle.

FIG. 2 is a schematic view of a bottom bracket structure of a two-speed bicycle.

FIG. 3 is a schematic view of a planetary gear configuration for a two-speed bicycle.

As shown in the figure: 1. bicycle support, 2, axis, 3, gear A, 4, gear B, 5, axis sprocket, 6, sprocket, 7, activity hinge, 8, gear B support, 9, sun gear, 10, planet carrier, 11, planetary gear, 12, ring gear, 13, ring gear sprocket, 14, planet carrier sprocket, 15, wire rope.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model discloses when the concrete implementation, a two-stage variable speed bicycle, including bicycle support 1, install axis 2 on the bicycle support 1, install axis chain wheel group 5 on the axis 2, axis chain wheel group 5 comprises the three sprocket that the size is inequality, still install gear A3 on the axis 2, the cooperation is equipped with gear B4 on the gear A3, a fixed sprocket 6 is gone up to gear B4, gear B4 internally mounted has one-way bearing, gear B support 8's one end is installed on activity hinge 7, gear B support 8's the other end is connected by derailleur wire rope 15, install sun gear 9 on the bicycle rear axle ratchet, sun gear 9 one side is equipped with planet carrier 10, install planetary gear 11 in the planet carrier 10, the cooperation of the radial outside of planetary gear 11 is equipped with ring gear 12, ring gear 12 axial outside is equipped with ring gear sprocket 13, the planet carrier 10 is provided with a planet carrier sprocket 14 on the axially outer side.

Three planetary gears are arranged on the planet carrier 10, and the planetary gears 11 are installed in the planet carrier in a matching mode.

The sun gear 9 is fixed to a ratchet wheel of a rear axle of the bicycle, and the ring gear 12 and the planet carrier 10 are respectively located on both sides of the sun gear 9.

The gear B4 is installed below the bottom bracket, one end of the gear B4 bracket 8 is supported by a hinge 7, and the other end is connected with a speed changer beside a bicycle handlebar through a wire rope 15.

And a one-way bearing is arranged in the gear B4 and is used for locking the gear ring chain wheel in a one-way mode through the chain wheel 6, the chain and the gear ring chain wheel 13.

A one-way bearing is arranged in the gear B4, a chain wheel 6 is fixed on the gear B4, and the chain wheel 6 is connected with the gear ring chain wheel 13 through a chain.

The planet carrier chain wheel 14 is connected with the middle shaft chain wheel set 5 through a chain.

The utility model discloses a theory of operation: the technology is characterized by two-stage transmission, the first stage is variable speed chain wheel chain transmission, the second stage is variable speed planetary gear transmission, and because the two-stage transmission can change the speed, the bicycle can be ridden more easily.

1. When the bicycle is started:

the small chain wheel of the middle shaft can be used to match with the low-speed state of the secondary transmission (so that the single gear B is separated from the middle shaft gear A);

2. when riding on an uphill slope:

like the bicycle is started, the slower slope can also be used for a larger chain and a largest chain wheel of the middle shaft;

3. when riding on a flat road:

using the largest sprocket of the first stage; if the slow speed state of the second stage is used, the speed at this time is equivalent to the fast speed of the current one-stage transmission speed-changing bicycle; if the road condition is good, the speed ratio can be increased by switching to the fast state of the second-stage planetary gear transmission (combining the gear B with the gear A of the middle shaft), so that the speed of the bicycle is increased.

4. Through the cooperation of 3 chain disks of different sizes of well axle chain disk group and planetary gear derailleur height, low-speed state, the bicycle can have 6 speeds and can select in riding, just so ride comparatively freely, and the adaptation crowd is also wider.

To sum up, the utility model discloses it starts and rides fast contradiction easily to have solved basically, still has the function of adaptation most topography.

The implementation method of the technical scheme comprises the following steps:

on the rear wheel axle of the existing speed-changing bicycle, the transmission flywheel is taken down, and then a planetary gear speed changer is installed, as shown in the figure: the sun gear of derailleur is fixed on the ratchet of bicycle, and ring gear and planet carrier are located the both sides of sun gear respectively, and all install the sprocket, and the sprocket on the planet carrier passes through the well hub sprocket group of chain link bicycle, and the hub on the ring gear links the hub on the gear B, and gear B meshes with epaxial gear A additional and perhaps breaks away from in order to increase or reduce the velocity ratio when the speed governing. (one-way bearings are installed inside the clutch chain plate).

A gear B is arranged below a middle shaft of the bicycle; a gear A is additionally arranged on a middle shaft of the bicycle, as shown in the figure.

When the bicycle is ridden, power is transmitted through the sun wheel, and when the bicycle moves forwards, the middle shaft chain disc drives the planetary disc chain disc to rotate clockwise, and at the moment, the gear ring needs to be fixed to drive the sun wheel to rotate clockwise so as to drive the bicycle to move forwards. The method for fixing the gear ring is that the gear ring chain plate is connected with the chain wheel on the gear B through a chain, and the one-way bearing is arranged in the chain wheel of the gear B to ensure that the gear ring cannot rotate clockwise along with the planet carrier, so that the purpose of locking the gear ring in a one-way mode is achieved, and the bicycle can normally run. When the bicycle needs to accelerate to move forwards, the gear B on the one-way clutch is meshed with the gear A on the bicycle central shaft according to the characteristics of the planetary transmission, so that the ring gear chain wheel rotates anticlockwise, (the state is called the high-speed state of the planetary transmission), and the bicycle can run at full speed due to the fact that the speed ratio of the whole transmission system is increased. The speed at this moment is faster than that of the common speed-changing bicycle on the market.

Such succinct second grade variable speed bicycle, simple structure, low price, easy maintenance is a novel transmission system bicycle that can popularize, can receive masses bicycle fan's favor certainly.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless a limitation is explicitly stated.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

1. A two-stage speed-changing bicycle comprises a bicycle support (1) and a gear B support (8), and is characterized in that: the bicycle is characterized in that a middle shaft (2) is installed on the bicycle support (1), a middle shaft chain wheel set (5) is installed on the middle shaft (2), a gear A (3) is further installed on the middle shaft (2), a gear B (4) is arranged on the gear A (3) in a matched mode, a chain wheel (6) is fixed on the gear B (4), a one-way bearing is installed inside the gear B (4), a movable hinge (7) is arranged on the gear B support (8), one end of the gear B support (8) is installed on the movable hinge (7), the gear B (4) can rotate around the movable hinge, the other end of the gear B support (8) is connected with a speed changer on the edge of a bicycle handle through a steel wire rope (15), a sun gear (9) is installed on a bicycle rear shaft, a planet carrier (10) is arranged on one side of the sun gear (9), and a planet gear (11) is installed in the planet, the radial outside cooperation of planetary gear (11) is equipped with ring gear (12), ring gear (12) axial outside is equipped with ring gear sprocket (13), planet carrier (10) axial outside is equipped with planet carrier sprocket (14).

2. A two-stage speed changing bicycle according to claim 1, wherein: three planet gears are arranged on the planet carrier (10), and the planet gears (11) are installed in the planet carrier in a matching mode.

3. A two-stage speed changing bicycle according to claim 1, wherein: the sun gear (9) is fixed on a ratchet wheel of a rear axle of the bicycle, and the gear ring (12) and the planet carrier (10) are respectively positioned on two sides of the sun gear (9).

4. A two-stage speed changing bicycle according to claim 1, wherein: the gear B (4) is internally provided with a one-way bearing, the gear B (4) is fixedly provided with a chain wheel (6), and the chain wheel (6) is connected with a gear ring chain wheel (13) through a chain.

5. A two-stage speed changing bicycle according to claim 1, wherein: the planet carrier chain wheel (14) is connected with the middle shaft chain wheel set (5) through a chain.