CN206187272U - Bicycle automatic gearbox and transmission system - Google Patents

Abstract

The utility model especially relates to a bicycle automatic gearbox and transmission system, automatic gearbox include that it reaches superficial movable fluted disc driver to float movable fluted disc, float the movable fluted disc driver and draw together driving -disc, the arm of force, the teeth of a cogwheel, round pin axle, adjustment disk, torque spring, positioning disk, and the adjustment disk is under torque spring tensile force, through the arm of force with arm of force superior whorl tooth pressure tightly at the bar through -hole near in the driving -disc border one end, superficial movable fluted disc installs between driving -disc and positioning disk, and superficial movable fluted disc includes the fluted disc body and ring gear, and the fluted disc is external realizes chain meshing on institute's tooth of establishing and the bicycle, the gear rign meshing that comprises the teeth of a cogwheel on the arm of force in ring gear and the superficial movable fluted disc driver, transmission system is including floating movable fluted disc and floating movable fluted disc driver, monolithic flywheel, chain, rear axle, axis, crank, pedal and flower -drum, and the flywheel passes through the chain to be connected with the cooperation of superficial movable fluted disc, and superficial movable fluted disc driver passes through the mesopore and installs in epaxially. The utility model discloses simple structure, it is convenient, with low costs to make, safe and reliable, excellent performance, high transmission efficiency.

Description

Automatic speed-changing device for bicycle and transmission system

Technical field

The utility model is related to a kind of machine driving class speed changer, more particularly to a kind of automatic speed-changing device for bicycle and biography Dynamic system, is particularly suited for chain drive system.

Background technology

At present, on bicycle be generally divided into two major classes using more speed changer：One class speed changer is by changing one The wheel disc and one group of flywheel of different-diameter of group different-diameter realize speed change with the cooperation of chain.Such speed changer is present Some obvious shortcomings：Such as structure is more complicated, due to the Impact direction and rear axle and the axle of axis of chain in speed-change process Line out of plumb, kinetic equation loss is big, and caused chain and fluted disc quick abrasion, short life, efficiency are low, and chain easily occurs distorting, pauses Frustrate, come off, or even phenomenon of rupture.Another kind of is planetary gear speed variator for bicycle（I.e. so-called internal speed changer）, it is using certainly The centrifugal force that the control unit in speed changer in ride of driving a vehicle is produced in the running carrys out the combination of change gear to change Gearratio, realize speed change.Such speed changer there is also a little obvious shortcomings：Such as structure is considerably complicated, is more expensive to manufacture, weight Amount is heavier, and maintenance cost is high, there is obvious pause and transition in rhythm or melody sense etc. in speed-change process.Therefore, a kind of simple structure, manufacture are researched and developed Convenient, with low cost and safe and reliable, function admirable, the bicycle speed-varying unit of transmission efficiency is become as in industry field Technical problem urgently to be resolved hurrily for many years.

The content of the invention

The technical problems to be solved in the utility model is exactly to overcome above-mentioned the deficiencies in the prior art, and provides a kind of structure letter It is single, easily manufactured, with low cost and safe and reliable, function admirable, the automatic speed-changing device for bicycle and power train of transmission efficiency System.

In order to solve the above technical problems, the technical solution adopted in the utility model is：

A kind of automatic speed-changing device for bicycle, including floating fluted disc and floating fluted disc driver are designed, wherein floating fluted disc drives Dynamic device includes the positioning disk and adjustment disk set by drive disk and its both sides, respectively along center on drive disk, positioning disk and adjustment disk The mesopore that axis is provided with mesopore, and drive disk is sleeved on bicycle middle shaft for matching, and multiple is laid with drive disk The strip through-hole of annular arrangement, the trend of strip through-hole is parallel with the tangential direction at mesopore edge；The edge of adjustment disk is uniform The arm of force and torque spring of multiple annular arrangements are provided with, the wherein quantity of the arm of force, torque spring and strip through-hole is one-to-one corresponding, One end of the arm of force is movably hinged with adjustment disk, and the other end of the arm of force is equipped with the gear teeth, and the gear teeth on the arm of force pass through the bar on drive disk Shape through hole is between drive disk and positioning disk, and the corresponding ring-type of the gear teeth on the arm of force rearranges ring gear, one end of torque spring It is fixed on adjustment disk, the other end of torque spring is fixed on drive disk；Adjustment disk leads under the pulling force effect of torque spring Cross the arm of force gear teeth on the arm of force are pressed in the one end at close drive disk edge of strip through-hole；

The floating fluted disc is arranged between the drive disk of floating fluted disc driver and positioning disk, and floating fluted disc is included just Property connection fluted disc body and ring gear, wherein the upper set tooth of circle is connected fluted disc with chain engagement on bicycle in vitro, ring gear and The ring gear being made up of the gear teeth on the arm of force in floating fluted disc driver engages connection.

Preferably, in above-mentioned automatic speed-changing device for bicycle, the drive disk both sides are respectively equipped with boss along central axis, Mesopore on positioning disk and adjustment disk is screwed with the boss of corresponding side is connected respectively, and the mesopore on drive disk is through being arranged on On boss.

Preferably, in above-mentioned automatic speed-changing device for bicycle, one end of the arm of force is by bearing pin and adjustment disk moveable hinge Connect.

Preferably, in above-mentioned automatic speed-changing device for bicycle, one end of the torque spring is fixed on adjustment disk and is used to Install in the hole of torque spring, the other end of torque spring is fixed on drive disk on the bearing pin for being used to install torque spring.

Preferably, in above-mentioned automatic speed-changing device for bicycle, the adjustment disk includes that wheel hub and surface are circumferentially uniformly arranged Multiple spokes, the wherein quantity of spoke and the arm of force, torque spring is corresponded, and the arm of force, torque spring are located at the side of spoke Along upper.

Preferably, in above-mentioned automatic speed-changing device for bicycle, with adjustment disk hinged end for U-shaped is pitched, U-shaped pitches two to the arm of force Side correspondence is inlaid in adjustment disk both sides.

Additionally, the utility model also provides a kind of power train containing any of the above-described described automatic speed-changing device for bicycle System, also including flywheel, chain, rear axle, axis, crank, foot-operated and flower-drum, the flywheel is monolithic flywheel, and the flywheel passes through band The mesopore of the flywheel of keyway coordinates on flower-drum with column foot, and flower-drum is arranged on vehicle frame by rear axle, and flywheel passes through chain It is connected with floating fluted disc, floating fluted disc is arranged on floating fluted disc driver, floating fluted disc driver is installed by mesopore On axis, ride and be arranged on crank, crank is arranged on the two ends of axis, axis is arranged on the five of vehicle frame and leads to.

Operation principle of the present utility model is：

The utility model is on the basis of conventional Shift Computation chain type bicycle speed changer, three fluted disc structures of fluted disc before original to be changed Change the gear being made up of the part such as floating fluted disc and floating fluted disc driver into, multiple-piece turriform on former rear axle column foot is flown Wheel construction changes into single flywheel structure.According to bicycle shifting needs under steam, by changing to riding the power for applying Size, change the annular row on adjustment disk in the floating fluted disc driver under the booster action of its drive disk and torque spring Position in the deflection angle of the arm of force with the gear teeth of row, and the strip through-hole of the gear teeth on the arm of force on drive disk, from And the diameter for changing the ring gear being made up of the gear teeth annular arrangement on the arm of force engages to change tooth with the ring gear of floating fluted disc Ring and the gearratio of ring gear, make floating fluted disc be fluctuated in the range of less than its radius, make in the auxiliary of torque spring Under, change the gearratio and the output torque of floating fluted disc of ring gear and floating fluted disc.Speed changer is without any servicing unit And operation, quick smooth changed speed operation can be realized according to load change and speed, adjust automatically moment of torsion and gearratio.

The beneficial effect of technical solutions of the utility model is：

1st, in structure, the utility model employs floating fluted disc and floating fluted disc driver, axially occupies little space, and passes The front and rear fluted disc of dynamic system uses monodentate disk, eliminates preceding variable-speed controller and rear variable-speed controller, thus overall structure is more Plus simplify.Its simple structure is additionally, since, it is not high to material performance requirement, while also reducing manufacture difficulty and manufacturing cost.

2nd, in structure, the utility model employs floating fluted disc and floating fluted disc driver, is only needed in speed-change process Change the size to riding the power for applying, the mated condition between chain and flywheel and floating fluted disc is not changed, only change and float The engagement of the internal tooth of the diameter of ring gear and ring gear in fluted disc driver, the linear velocity of a change chain can continuously change Variable ratio and output torque, realize fluid drive.Thus, not only it had been not required to hand control but also time saving and energy saving, operation is easier, can Also improved by property.

3rd, additionally, in speed-change process, pedaled without slow, power will not be interrupted, be not in chain distortion, come off and pause and transition in rhythm or melody is existing As, kinetic equation loss, thus transmission efficiency, performance safety reliability, long service life are also reduced, can bring new to bicyclist Joyful experience.

4th, in structure, the utility model adjustment disk is designed as wheel hub+spoke structure, substantially reduces the weight of adjustment disk, So that speed changer overall structure weight is lighter, fluid drive process is lighter；And, the arm of force is U-shaped with adjustment disk connection end Pitch structure and using flush type design, be then favorably improved the bearing capacity of the set gear teeth on the arm of force, enhancing overall structure is in work The stability and reliability of process, and cause that construction profile is attractive in appearance.

Brief description of the drawings

Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings, wherein：

Fig. 1 is the structural representation of the utility model automatic speed-changing device for bicycle（It is clear expression, employs broken section Figure）；

Fig. 2 is the right side structural representation shown in Fig. 1（It is clear expression, employs sectional view）；

Fig. 3 is the mplifying structure schematic diagram of local I shown in Fig. 2；

Fig. 4 is the structural representation of drive disk of the present utility model；

Fig. 5 is the structural representation of adjustment disk of the present utility model；

Fig. 6 is the structural representation of positioning disk of the present utility model；

Fig. 7 is the structural representation of floating fluted disc of the present utility model；

Fig. 8 is the assembling structure schematic diagram of the utility model adjustment disk and drive disk（Preceding, drive disk is rear for adjustment disk）；

Fig. 9 is the structural representation of the utility model bicycle transmission system；

Sequence number in figure：1st, flywheel, 2, chain, 3, float type fluted disc,

301st, fluted disc body, 302, ring gear,

4th, floating fluted disc driver,

401st, drive disk, 4011, boss, 4012, mesopore, 4013, strip through-hole,

402nd, the arm of force, 403, the gear teeth, 404, bearing pin,

405th, adjustment disk, 4051, mesopore, 4052, wheel hub, 4053, spoke,

406th, torque spring,

407th, positioning disk, 4071, screw thread mesopore,

5th, rear axle, 6, axis, 7, crank, 8, foot-operated, 9, flower-drum.

Specific embodiment

Illustrate specific embodiment of the present utility model with reference to the accompanying drawings and examples, but following examples are use To describe the utility model in detail, scope of the present utility model is limited never in any form, it is involved in the examples below Instrument element unless otherwise instructed, be conventional instrument element.

Embodiment one：

Referring to Fig. 1-8, in figure, the utility model automatic speed-changing device for bicycle, including floating fluted disc 3 and floating fluted disc drive Device 4, floating fluted disc 3 is arranged on floating fluted disc driver 4.

Wherein floating fluted disc driver 4 includes drive disk 401, the arm of force 402, the gear teeth 403, bearing pin 404, adjustment disk 405, torsion Power spring 406, positioning disk 407.

Wherein positioning disk 407 and adjustment disk 405 are located at the both sides of drive disk 401 respectively, and are pacified by screw thread with drive disk 401 Load connects.Drive disk 401 is a kind of discoidal structure member with boss 4011, there is an insertion drive disk on boss 4011 The mesopore 4012 of 401 both sides, drive disk 401 is arranged on bicycle middle shaft 6 by mesopore 4012.Positioning disk 407 is a kind of band Have the discoidal structure member of screw thread mesopore 4071, with drive disk 401 coordinate be used to limit the travelling scope of floating fluted disc 3 and Its rotation direction.

There are six strip through-holes of annular arrangement 4013 on its drive disk 401, strip through-hole 4013 is on drive disk 401 Spacing is uniform, and one end of the arm of force 402 is arranged on adjustment disk 405 by bearing pin 404, and the gear teeth 403 are arranged on the another of the arm of force 402 On end, the gear teeth 403 on the arm of force 402 are in drive disk 401 and positioning disk 407 through the strip through-hole 4013 on drive disk 401 Between, the ring gear of the annular arrangement of the gear teeth 403 composition on the arm of force 402 is engaged with the internal tooth of the ring gear 302 of floating fluted disc 3.

Adjustment disk 405 by its mesopore 4051 be arranged on drive disk 401 boss 4011 it is cylindrical on, torque spring 406 It is corresponding with the arm of force 402 installed in adjustment disk 405 and drive disk 401 it is cylindrical between, one end of torque spring 406 is arranged on regulation Being used on the edge of disk 405 is installed in the hole of torque spring 406, the other end be arranged on drive disk 401 it is cylindrical on be used to Install on the bearing pin 404 of torque spring 406；Adjustment disk 405 under the pulling force effect of torque spring 406, by the arm of force 402 by power The gear teeth 403 on arm 402 are pressed in the one end at the edge of close drive disk 401 of strip through-hole 4013.

Further, adjustment disk 405 includes six spokes 4053 that wheel hub 4052 and surface are circumferentially uniformly arranged, wherein spoke The quantity of bar 4053 is corresponded with the arm of force 402, torque spring 406, and the arm of force 402, torque spring 406 are located at spoke 4053 On edge.The structure can substantially reduce the weight of adjustment disk 405 so that speed changer overall structure weight is lighter.

When specifically used, in order to strengthen stability and reliability of the overall structure in the course of work, institute on the arm of force 402 is improved If the bearing capacity of the gear teeth 403, the arm of force 402 preferably pitches structure with the connection end of adjustment disk using U-shaped, and is inlaid in adjustment disk 405 Both sides.Thus, overall structure good appearance.

Floating fluted disc 3 is arranged between the drive disk 401 of floating fluted disc driver 4 and positioning disk 407, and floating fluted disc 3 Including rigidly connected fluted disc body 301 and ring gear 302, the wherein cylindrical set tooth of fluted disc body 301 is nibbled with chain on bicycle 2 Connection is closed, ring gear 302 is connected with the ring gear engagement being made up of the gear teeth 403 on the arm of force 402 in floating fluted disc driver 4.

Embodiment two：

Referring to Fig. 9, in figure, the utility model bicycle transmission system, including floating fluted disc 3, floating fluted disc driver 4, And flywheel 1, chain 2, rear axle 5, axis 6, crank 7, foot-operated 8 and flower-drum 9.

Wherein flywheel 1 is monolithic flywheel, and the flywheel 1 is coordinated installed in flower-drum by the mesopore of the flywheel with keyway with column foot On 9, flower-drum 9 is arranged on vehicle frame by rear axle 5, and flywheel 1 is connected by chain 2 with floating fluted disc 3, and floating fluted disc 3 is pacified On floating fluted disc driver 4, floating fluted disc driver 4 is arranged on axis 6 by mesopore, is ridden 8 and is arranged on crank 7 On, crank 7 is arranged on the two ends of axis 6, and axis 6 is arranged on the five of vehicle frame and leads to.

Wherein with embodiment one, the present embodiment is no longer repeated the structure of floating fluted disc 3 and floating fluted disc driver 4.

The utility model specific work process is as follows：

When foot-operated 8 are forced through crank 7 drives axis 6 to rotate, imparted power to by the driver 4 of floating fluted disc 3 Floating fluted disc 3, floating fluted disc 3 imparts power to flywheel 1 by chain 2, and flywheel 1 drives flower-drum 9 and driving moment operating makes Bicycle moves forward.

When bicycle is in starting stage or uphill way, wheel needs larger detent torque, at this moment rides and applied on 8 Plus power also should be larger, power is by crank 7, axis 6, the driver of floating fluted disc 34 drive disk 401, the arm of force 402, gear teeth 403 grade parts, by dynamic action on the ring gear 302 of floating fluted disc 3, drive floating fluted disc 3 to operate, and floating fluted disc 3 passes through Chain 2 drives flywheel 1 to operate.Because now resistance wheel is larger, the one side of drive disk 401 is by torque spring 406 and regulation Disk 405 imparts power to the arm of force 402, and the arm of force 402 imparts power to the ring gear 302 of floating fluted disc 3 by the gear teeth, together When, drive disk 401, to the guiding and driving effect of the gear teeth on the arm of force, causes the arm of force 402 to radius by its strip through-hole 4011 Less direction（I.e. to inner side）Deflection is produced, while the arm of force 402 imparts power to ring gear 302, also by adjustment disk 405 driving torque springs 406 are stretched, and torque spring 406 is increased the torsion of the arm of force 402, by the arm of force after the deflection of the arm of force 402 The diameter of the ring gear that the gear teeth 403 are constituted diminishes on 402, and ring gear drives the power increase of ring gear 302, rides the power applied on 8 It is bigger, drive the amplitude of the deflection of the arm of force 402 bigger, also make the gear teeth on the arm of force 402 in strip through-hole 4011 on drive disk 401 Position closer to the axis of axis 6, make the diameter of the ring gear being made up of the gear teeth 403 on the arm of force 402 smaller, drive ring gear 302 power is bigger, and when the arm of force 402 is deflected to a certain extent, the tooth pitch on ring gear reaches minimum, the tooth pitch phase with ring gear 302 Deng the gear teeth 403 on ring gear are engaged with the gear teeth on ring gear 302 according to putting in order for the gear teeth, and at this moment, the gear teeth 403 are constituted Ring gear diameter it is minimum, ring gear is also maximum to the driving force of ring gear 302, and ring gear drives floating fluted disc 3 to operate, and overcomes car The resistance that wheel is produced to it, drives flywheel 1 and wheel to operate by chain 2, completes the starting-up process of bicycle.

After bicycle completes to start to walk, with the reduction of the raising resistance of speed, needed for cycle wheel operation process Moment of torsion be also gradually reduced, at this moment, the power that the arm of force 402 in the driver 4 of floating fluted disc 3 bears also is gradually reduced, by torsion bullet The twisting force of spring 406 is gradually turned round, and reduces its deflection angle, makes the straight of the ring gear being made up of the gear teeth 403 on the arm of force 402 Footpath increases, and at this moment, the tooth pitch of the gear teeth also gradually increases on ring gear, is engaged not according still further to the gear teeth with the gear teeth on ring gear 302 Put in order engagement, but interval gear teeth meshing, be spaced the gear teeth the number of teeth it is relevant with the tooth pitch between the gear teeth on ring gear, the gear teeth it Between tooth pitch it is relevant with the amplitude that the arm of force is deflected, under the booster action of drive disk 401, adjustment disk 405 and torque spring 406, Ring gear is set to be engaged with the gear teeth automatic adaptation of ring gear 302 according to the tooth pitch of the gear teeth on ring gear.The increase of ring gear diameter, Ring gear is set to drive the rotating speed of ring gear 302 to improve, meanwhile, floating fluted disc 3 is driven turning for flywheel 1 and wheel by chain 2 Speed is improved.

With gradually stepping up for bicycle speed, when the road conditions of traveling are relatively preferable, at this moment the load of floating fluted disc 3 subtracts Gently, the arm of force 402 also gradually returns back to original state in the presence of torque spring 406, at this moment, by the gear teeth 403 on the arm of force 402 The diameter of the ring gear of composition reaches maximum, and each gear teeth is engaged with the corresponding internal tooth on ring gear 302, and ring gear The interior number of teeth of the ring gear 302 being spaced between upper adjacent two gear teeth is identical, and the center of circle of floating fluted disc 3 overlaps with the axis of axis 6, Floating fluted disc 3 is operated at the same speed with axis 6, drives flywheel 1 and wheel to operate at a relatively high speed by chain 2.Now, speed changer is complete Into whole speed-change process.

Speed changer either accelerates or slows down in speed-change process, directly foot-operated by control all without any operation , come the output torque and rotating speed that automatically control and adjust speed changer, speed-change process is fast smooth, is not in chain for the size of power 2 are distorted, come off and pause and transition in rhythm or melody phenomenon, and the experience of new pleasure can be brought to bicyclist.

Additionally, the utility model is readily adaptable for use in other chaindriven devices or system, to realize identical technology Purpose.

The utility model is described in detail above in conjunction with drawings and Examples, but, the skill of art Art personnel, can also be specific to each in above-described embodiment it is understood that on the premise of the utility model objective is not departed from Parameter is changed, and forms multiple specific embodiments, is common excursion of the present utility model, no longer detailed one by one herein State.

Claims (7)

1. a kind of automatic speed-changing device for bicycle, it is characterized in that：Including floating fluted disc and floating fluted disc driver, wherein the fluted disc that floats Driver includes the positioning disk and adjustment disk set by drive disk and its both sides, on drive disk, positioning disk and adjustment disk respectively in The mesopore that heart axis is provided with mesopore, and drive disk is sleeved on bicycle middle shaft for matching, is laid with drive disk many The strip through-hole of individual annular arrangement, the trend of strip through-hole is parallel with the tangential direction at mesopore edge；The edge of adjustment disk is equal It is laid with the arm of force and torque spring of multiple annular arrangements, wherein the quantity of the arm of force, torque spring and strip through-hole is one a pair Should, one end and the adjustment disk of the arm of force are movably hinged, and the other end of the arm of force is equipped with the gear teeth, and the gear teeth on the arm of force are passed through on drive disk Strip through-hole is between drive disk and positioning disk, and the corresponding ring-type of the gear teeth on the arm of force rearranges ring gear, the one of torque spring End is fixed on adjustment disk, and the other end of torque spring is fixed on drive disk；Adjustment disk under the pulling force effect of torque spring, The gear teeth on the arm of force are pressed in the one end at close drive disk edge of strip through-hole by the arm of force；

The floating fluted disc is arranged between the drive disk of floating fluted disc driver and positioning disk, and floating fluted disc includes that rigidity connects The upper set tooth of circle be connected with chain engagement on bicycle in vitro for the fluted disc body and ring gear for connecing, wherein fluted disc, ring gear and floating The ring gear being made up of the gear teeth on the arm of force in fluted disc driver engages connection.

2. automatic speed-changing device for bicycle according to claim 1, it is characterized in that：The drive disk both sides are along central axis point Be not provided with boss, the mesopore on positioning disk and adjustment disk is screwed with the boss of corresponding side is connected respectively, on drive disk in Hole is through being arranged on boss.

3. automatic speed-changing device for bicycle according to claim 1, it is characterized in that：One end of the arm of force is by bearing pin and tune Section disk activity is hinged.

4. automatic speed-changing device for bicycle according to claim 1, it is characterized in that：Tune is fixed in one end of the torque spring Save in the hole for being used to install torque spring on disk, the other end of torque spring is fixed on drive disk and is used to install torque spring On bearing pin.

5. automatic speed-changing device for bicycle according to claim 1, it is characterized in that：The adjustment disk includes wheel hub and surface week To the multiple spokes being uniformly arranged, wherein the quantity of spoke is corresponded with the arm of force, torque spring, and the arm of force, torque spring set In on the edge of spoke.

6. automatic speed-changing device for bicycle according to claim 1, it is characterized in that：The arm of force is U with adjustment disk hinged end Shape is pitched, and U-shaped fork both sides correspondence is inlaid in adjustment disk both sides.

7. a kind of transmission system of the automatic speed-changing device for bicycle containing described in any one of claim 1 to 6, also including flywheel, Chain, rear axle, axis, crank, foot-operated and flower-drum, the flywheel coordinates to be arranged on by the mesopore of the flywheel with keyway with column foot to be spent On drum, flower-drum is arranged on vehicle frame by rear axle, is ridden and is arranged on crank, and crank is arranged on the two ends of axis, and axis is installed Lead to the five of vehicle frame, it is characterized in that：The flywheel is monolithic flywheel, and flywheel is connected by chain with floating fluted disc, is floated Active toothed disk is arranged on floating fluted disc driver, and floating fluted disc driver is arranged on axis by mesopore.