CN211076239U - Multi-stage speed-changing bicycle - Google Patents

Abstract

The utility model discloses a multistage variable speed bicycle, including the bicycle support, install the axis on the bicycle support, epaxial chain wheel group and the gear A of being equipped with in, gear A cooperation is equipped with gear B, last fixed sprocket of gear B, and gear B installs on gear B support, and the one end of gear B support is supported to the last activity hinge of gear B support, and the other one end of gear B support is connected by wire rope and speed regulator. The bicycle rear wheel clamping flying tower base is further included, a sun gear, a synchronous chain wheel and a rear shaft chain wheel are mounted on the clamping flying tower base, a planet carrier and a planet carrier chain wheel are arranged on one side of the sun gear, a planet gear is mounted in the planet carrier, and a gear ring chain wheel are arranged on the other side of the sun gear. Compared with the prior art, the utility model the advantage lie in better solving the bicycle start, climbing and the contradiction between riding fast. Powerful functions and simple technology; the operation is reliable; the maintenance is convenient; the cost is low; energy conservation and environmental protection. Brings great convenience to the rider.

Description

Multi-stage speed-changing bicycle

Technical Field

The utility model relates to a bicycle field specifically indicates a possess one-level simultaneously, second grade and tertiary speed change gear's 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.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide one kind to above problem and had both made the bicycle start easily, can ride at a high speed again. 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.

The bicycle comprises a bicycle support, a middle shaft is mounted on the bicycle support, a middle shaft chain wheel set is mounted on the middle shaft, a gear A is further mounted on the middle shaft, a ratchet wheel device is mounted in the gear A, a gear B is further arranged in a matched manner and is also mounted in the gear B, a chain wheel is further fixed on the gear B, the gear B is mounted on a gear B support, a movable hinge is arranged on the gear B support, one end of the gear B support is mounted on the movable hinge, the other end of the gear B support is connected with a speed regulator finger beside a bicycle handle through a steel wire rope, a sun gear is fixedly mounted on a clamping tower base of a bicycle rear wheel shaft, a planet carrier is arranged on one side of the sun gear, a planet gear is mounted in the planet carrier, and a gear ring is arranged on the radial outer side of the planet gear, the utility model discloses a bicycle rear axle, including ring gear, planet carrier sprocket, fixed mounting rear axle sprocket, the card of bicycle rear axle is in the tower base, the ring gear axial outside is equipped with the ring gear sprocket, the planet carrier axial outside is equipped with the planet carrier sprocket, a fixed mounting rear axle sprocket next door still, rear axle sprocket still fixed mounting be in on the card of bicycle rear axle flies the tower base, the planet carrier sprocket with still install a synchronous sprocket that can free rotation in the middle of the rear axle.

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 clamping tower base of a rear wheel shaft of the bicycle, and the gear ring and the planet carrier are respectively positioned on two sides of the sun gear.

As the improvement, install ratchet in the gear A, the pedal device can freely return chain adaptation people's the custom of riding when tertiary transmission state of being convenient for, improves the experience of riding.

As an improvement, the gear B is arranged below the middle shaft gear A, 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 finger beside a bicycle handlebar through a steel wire rope.

As an improvement, a ratchet device is arranged in the gear B and locks the gear ring chain wheel in a one-way mode through a chain wheel and a chain on the gear B.

As an improvement, the bicycle bottom bracket chain wheel set, the fixed chain wheel and the chain on the clamping flying tower base form a variable-speed primary transmission device of the bicycle.

As an improvement, the bicycle bottom bracket chain wheel set and the planet carrier chain wheel are linked through a chain and form a variable-speed secondary transmission device of the bicycle together with the planetary gear speed changer.

As an improvement, the middle shaft gear A and the gear B as well as the gear B chain wheel and the gear ring chain wheel form a three-stage transmission device of the bicycle together with the planetary gear transmission through chain connection.

As an improvement, two speed changer dials are arranged beside a right handlebar of the bicycle, wherein one speed changer dial is switched between a primary transmission state and a secondary transmission state through a rear dial positioner. And the other transmission finger switches the two-stage transmission state and the three-stage transmission state through one end of the gear B bracket.

As an improvement, a synchronous chain wheel capable of freely rotating is added between the planet carrier chain wheel and the rear shaft chain wheel, and the synchronous chain wheel serves as a middle chain wheel, so that the chain can be freely switched between the planet carrier chain wheel and the rear shaft chain wheel, and the primary speed change state and the secondary speed change state can be smoothly switched in the riding process.

The beneficial effect that adopts above-mentioned technical scheme to produce:

the utility model discloses the characteristics of one-level and second grade and tertiary transmission bicycle have been synthesized, the bicycle has both been solved well and has been easily started and the uphill, the problem of riding again at a high speed, this bicycle can switch over into the one-level wantonly at the in-process of riding, second grade or tertiary transmission variable speed state, in order to ensure that the bicycle can ride at low-speed ratio also can ride at a high speed ratio, improve the transmission efficiency that the bicycle was ridden simultaneously as far as possible (the efficiency of one-level transmission is higher than the efficiency of second grade transmission, so this bicycle is efficient higher than the second grade transmission bicycle under one-level transmission running state, and the minimum speed ratio can be about 1:1.5 or littleer, climbing ability superstrong.

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, synchronous sprocket, 16 rear axle sprocket, 17, 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 multistage 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, gear A3 internally mounted has ratchet, gear A3 still cooperates and is equipped with gear B4, fixed sprocket 6 on the gear B4, gear B4 internally mounted also has ratchet, gear B4 is fixed on gear B support 8, gear B support 8's one end is installed on movable hinge 7, gear B support 8's the other end is connected by derailleur wire rope 17, install sun gear 9 on the card of bicycle rear axle flies the column base, sun gear 9 one side is equipped with planet carrier 10, install planetary gear 11 in the planet carrier 10, the radial outside cooperation of planetary gear 11 is equipped with ring gear 12, the 12 axial outsides of ring gear are equipped with ring gear sprocket 13, the planet carrier 10 axial outsides is equipped with planet carrier sprocket 14. 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 on a clamping tower base 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. The gear B4 is installed below the bottom bracket, and one end of the gear B4 support 8 is supported by the hinge 7, and the other end is connected with the derailleur finger beside the bicycle handlebar through the wire rope 17. A ratchet device is arranged in the gear B4 and locks 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 rear axle chain wheel 16 is arranged in parallel on a planet carrier chain wheel 14 on a clamping flying tower base of the rear axle of the bicycle, and the rear axle chain wheel 16 is fixed on the clamping flying tower base. A freely rotating synchronous sprocket 15 is added between the planet carrier sprocket 14 and the rear axle sprocket 16. The timing sprocket 15 assists in the smooth shifting of the chain between the primary and secondary transmissions.

The utility model discloses a theory of operation: the technology is characterized in that the first-stage, second-stage and third-stage transmission devices can be switched to operate at any time according to road conditions during riding and are divided into three working conditions: the first is a one-stage variable sprocket chain drive (with 3 speed ratios in this case), where the ratio is typically designed to be 1: about 1.5-3, and is suitable for starting and climbing bicycle. The transmission efficiency is highest because of the one-stage transmission; the second operating mode is a two-stage transmission (with 3 speed ratios) with a variable speed chain transmission plus a planetary gear 11 transmission, and the speed ratio under this operating mode is generally designed to be 1: 3.5-6.5, suitable for the bicycle to ride at a high speed on the better road section, because it is the second-class transmission so the transmission efficiency is lower than the first operating mode efficiency; the third operating mode is a three-stage transmission (the two-stage transmission does not exit when the three-stage transmission operates, so the three-stage transmission simultaneously intervenes in the operation of the three-stage transmission, so the three-stage rotating device can also change speed by the speed change of the two-stage transmission when the three-stage transmission operates) in which the gear A33 and the gear B44 are meshed and the chain wheel 6 is linked with the chain wheel of the planet carrier 10 through a chain and the chain wheel of the planet gear 11, and the speed change ratio in the operating mode is: 7-10 or higher, is suitable for the sprint of the knight with particularly good physical strength under particularly good road conditions, but the transmission efficiency under the working condition is the lowest. (in general terms, the two preceding operating modes just are fit for the overwhelming majority bicycle fan, so can simplify the transmission system of bicycle, cancel all devices of third level transmission, fix ring gear 12 on bicycle frame, and the bicycle is just more succinct like this, and the cost is lower, and is lighter, and it is more convenient to maintain, and is more easily popularized.) foretell characteristics make riding of this bicycle become more easy, and can exert the biggest potentiality of riding passerby.

1. When the bicycle is started:

a primary transmission of the bicycle may be used.

2. When riding on an uphill slope:

the first-stage transmission device is used in the same state as the bicycle is started, and the second-stage transmission device of the bicycle can be used in a gentle slope;

3. when riding on a flat road or descending a gentle slope:

the bicycle secondary transmission device can be used, and the speed at the moment can be higher than the fastest speed of the current primary transmission speed-changing bicycle; when the road conditions are particularly good, the three-stage transmission device of the bicycle can be used, and the speed ratio is not comparable to that of the bicycle on the market at present.

4. Through the cooperation of 3 chain disks of different sizes of 2 chain disk groups of axis and tertiary speed change gear, the bicycle can have 9 speeds and can select in riding, just so ride comparatively at will, 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 full topography basically.

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

a transmission flywheel (a cassette flywheel) is taken down from a rear wheel axle of the existing speed-changing bicycle, a cassette flying tower base is reserved, a planetary gear is installed on the cassette flying tower base, a sun gear 9 of the planetary gear is fixed on the cassette flying tower base, and a gear ring 12 and a planet carrier 10 are respectively positioned on two sides of the sun gear 9 and are both provided with chain wheels 6.

And a rear shaft chain wheel 16 is arranged beside the chain wheel of the planet carrier 10 side by side and is also fixed on the clamping tower base, and the rear shaft chain wheel 16, the chain and the chain wheel group of the middle shaft 2 form a primary speed change device of the bicycle. The chain cannot be directly switched between the planet carrier 10 chain wheel and the rear shaft chain wheel 16 in the operation process due to the fact that the planet carrier 10 chain wheel and the rear shaft chain wheel 16 have large speed difference (the difference between the rotating speed and the linear speed is large) in the operation process, the synchronous chain wheel 15 capable of freely rotating is additionally arranged between the planet carrier 10 chain wheel and the rear shaft chain wheel 16, the operation principle is that the chain is firstly switched from the planet carrier 10 gear (or the rear shaft gear) to the synchronous chain wheel 15, and then is switched to the rear shaft chain wheel 16 (or the planet carrier 10 chain wheel) through the synchronous chain wheel 15, the problem that the chain cannot be switched due to the fact that the planet carrier 10 chain wheel and the rear shaft chain wheel 16 are asynchronous is solved, and smooth switching of the primary transmission device and the secondary transmission device in the riding process is achieved.

The chain wheel of the planet carrier 10 is connected with a chain wheel group of a middle shaft 2 of the bicycle through a chain to form a two-stage speed change device of the bicycle,

a gear A3 is additionally arranged on the bicycle bottom bracket 2, a gear B4 is arranged below the gear A3, and the three-stage transmission device of the bicycle is formed by the meshing of the gear A3 and the gear B4, the chain wheel on the gear B4, the chain wheel of the gear B12 and the chain wheel of the gear ring 12 through a chain and the planetary transmission.

The two-stage and three-stage transmission states of the bicycle are switched by the disengagement or engagement of the gear B4 and the gear A3.

When the bicycle is ridden, power is transmitted through the sun gear, when the bicycle moves forwards, the chain disc of the central shaft 2 drives the chain disc of the planetary disc to rotate clockwise, and at the moment, the gear ring 12 needs to be fixed to drive the sun gear to rotate clockwise so as to drive the bicycle to move forwards. The method for fixing the gear ring 12 is that the chain disc of the gear ring 12 is linked with the chain wheel on the gear B4 through a chain, and a ratchet wheel device is arranged in the chain wheel of the gear B4, so that the gear ring 12 cannot rotate clockwise along with the planet carrier 10, the purpose of locking the gear ring 12 in a one-way mode is achieved, and the secondary transmission device of the bicycle can normally run. When higher speed is required to ride, gear B4 is engaged with gear A3 on the bottom bracket 2 of the bicycle so that the sprocket of ring gear 12 rotates counterclockwise (at this time, the gear is switched to the third gear state but the second gear state device is not withdrawn.) the bicycle can be ridden at higher speed because the speed ratio of the whole transmission system is increased. The speed at this moment can be much faster than the ordinary speed-changing bicycle on the market (the bicycle can only provide high speed ratio, how fast can ride still see the strength and skill of the rider).

Such a succinct bicycle that possesses one-level and second grade speed change gear, simple structure, the 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 (4)

1. A multi-speed bicycle comprises a bicycle support (1) and is characterized in that, the bicycle support (1) is provided with a middle shaft (2), the middle shaft (2) is provided with a middle shaft chain wheel set (5), the middle shaft (2) is also provided with a gear A (3), a ratchet wheel device is arranged in the gear A (3), the gear A (3) is also provided with a gear B (4) in a matching way, a chain wheel (6) is fixed on the gear B (4), a ratchet wheel device is arranged in the gear B (4), the gear B (4) is fixed on a gear B bracket (8), a movable hinge (7) is arranged on the gear B bracket (8), one end of the gear B bracket (8) is arranged on the movable hinge (7), the other end of the gear B bracket is connected with a speed changer finger on the side of a bicycle handlebar through a steel wire rope (17); the clamping flying tower base further comprises a bicycle rear shaft, a sun gear (9) is fixedly mounted on the clamping flying tower base, a planet carrier (10) is arranged on one side of the sun gear (9), a planet gear (11) is mounted in the planet carrier (10), a gear ring (12) is arranged on the radial outer side of the planet gear (11) in a matched mode, a gear ring chain wheel (13) is arranged on the axial outer side of the gear ring (12), a planet carrier chain wheel (14) is arranged on the axial outer side of the planet carrier (10), rear shaft chain wheels (16) are further mounted beside the planet carrier chain wheel (14) side by side, the rear shaft chain wheels (16) are fixed on the bicycle clamping flying tower base, and a synchronous chain wheel (15) capable of freely rotating is further mounted between the planet carrier chain wheel 14 and the;

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;

the sun gear (9) is fixed on a clamping tower base 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);

the rear shaft chain wheel and the middle shaft chain wheel group (5) are connected through a chain to form a variable-speed primary transmission device of the bicycle;

a ratchet device is arranged in the gear B (4), a chain wheel (6) is fixed on the gear B (4), and the chain wheel (6) is connected with a gear ring chain wheel (13) through a chain.

2. A multi-speed bicycle according to claim 1, wherein the planet carrier sprocket (14) is chain-linked to the bottom bracket axle sprocket set (5).

3. A multi-speed bicycle according to claim 1, wherein the timing sprocket (15) acts as an intermediate gear to enable the chain to be shifted between the carrier sprocket (14) and the rear axle sprocket (16) during riding.

4. A multi-speed bicycle according to claim 1, wherein the gear a (3) of the bottom bracket axle is provided with a ratchet mechanism.

Images