CN113212630A

CN113212630A - Lever speed-changing bicycle

Info

Publication number: CN113212630A
Application number: CN202110587916.1A
Authority: CN
Inventors: 徐辅成
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-08-06
Anticipated expiration: 2041-05-28
Also published as: CN113212630B

Abstract

A lever speed-changing bicycle relates to a bicycle, wherein a lever round point of the lever bicycle is arranged on a lever shaft; two levers (1) are arranged and are fixed at two ends of a lever shaft (4), a steel rope is sleeved on a safety buckle through a slideway wheel, the slideway wheel is fixedly connected on an inclined frame behind a saddle (7), the safety buckle is fixedly connected on the lever (1), three gear shifters are fixed on a semicircular channel steel at the tail end of the frame, and three gear boxes are connected on the lever shaft (4) in series; the clamping piece is fixed on a brace, and the brace is fixed on a slideway wheel; the gear shifting key (11) is connected with the gear shifter and the slide wheel, and the clamping piece is clamped on the gear; the lath is fixedly connected on the fixed disc; the lath is reserved with a through hole and fixed on a screw rod (32), the screw rod is fixed on the tail end of the frame, and only one card can be clamped, but two or three cards can not be clamped simultaneously; the gear ratio of the lever bicycle gear is more than 20 times at most, and far exceeds the gear ratio of a chain, the space of the speed changer and the through shaft of the wheel is reduced, the structure is simplified, the speed changer is convenient to shift, and the lever bicycle gear is more suitable for climbing and accelerating.

Description

Lever speed-changing bicycle

Technical Field

The invention relates to a bicycle, in particular to a lever speed-changing bicycle.

Background

The bicycle is a vehicle driven by physical energy, has long-term development and revolution along with the development of the society, still cannot meet the current era of rapid development, and is gradually replaced by an electric bicycle.

The chain bicycle has four major defects:

1. the power is insufficient, the length of the crank is limited, and the power of the bicycle is influenced. The chain bicycle is insufficient in power, the length of the power from a crank ranges from 170mm to 175mm, the maximum torque generated by the bicycle is limited, and therefore the running speed of the bicycle is influenced.

2. The utilization rate of the bicycle body with the chain is 50%, the rotation of the crank enables the torque min to change from 0% to max 100%, and the long-distance running of the bicycle is influenced.

3. The chain bicycle has small gear ratio, the maximum gear ratio is about 4 times, and no space is available for doubling the gear ratio.

4. The chain is easy to drop or break, and the maintenance is inconvenient.

Disclosure of Invention

The invention aims to provide a lever speed-changing bicycle, the power of the bicycle is derived from the length of a lever, and the length of the lever bicycle is about 3 times of the length of a crank, so that the power of the bicycle is greatly improved. The tail end of the lever is of a ratchet structure and is connected with two ends of a wheel axle, the lever swings up and down and is connected by a steel rope, and the height of the up-and-down swing center of the lever and the up-and-down swing amplitude of the lever can be adjusted. The gear ratio of the lever bicycle is more than 20 times at most, which far exceeds the gear ratio of a chain, the space of the speed changer and the through shaft of the wheel is reduced, the structure is simplified, the speed changer is convenient to shift, and the lever bicycle is more suitable for climbing and accelerating.

The purpose of the invention is realized by the following technical scheme:

a lever speed-changing bicycle comprises a lever, a steel rope, a speed changer, a lever shaft, a pedal, a bicycle frame, a bicycle seat, a hand brake, a gear shifting key, a rear fork, a front wheel, a rear wheel bearing fixing groove, a bearing, a rear wheel shaft, a disc brake sheet, a gearbox, a slideway wheel, a clamping sheet, a gear shifter, a screw rod, a lath, a fixing sheet, a central gear, an inner gear, a disc and a brace; the lever round points of the lever bicycle are arranged on the lever shaft; two levers are arranged and fixed at two ends of a lever shaft, a steel rope is sleeved on a safety buckle through a slideway wheel, the slideway wheel is fixedly connected on an inclined frame behind a saddle, the safety buckle is fixedly connected on the lever, three gear shifters are fixed on a semi-circular channel steel at the tail end of the frame, and three gear boxes are connected on the lever shaft in series; the clamping piece is fixed on a brace, and the brace is fixed on a slideway wheel; the gear shifting key is connected with the gear shifter and the connecting slideway wheel, and the clamping piece is clamped on the gear; the lath is fixedly connected on the fixed disc; the lath is reserved with a through hole and fixed on a screw rod which is fixed on the tail end of the frame, and only one card can be clamped, but two or three cards can not be clamped simultaneously; the lever shaft and the rear wheel of the rear wheel shaft are arranged on the rear wheel shaft and fixed by a screw cap, two bearings are fixed on the rear wheel shaft, and the two bearings are arranged in a rear wheel bearing fixing groove; the rear wheel disc brake sheet and the transmission are arranged on a rear wheel shaft, the lever shaft is provided with a key groove, a brace is arranged in the key groove, the lever shaft is arranged in the center of the rear wheel shaft, and the three slideway wheels are arranged on the lever shaft; three slideway wheels of the gear shifter are arranged on the lever shaft; the brace is connected with the slideway wheel; the three gear shifters are fixed on the rear wheel bearing fixing grooves, and the slide way wheels move left and right and rotate synchronously with the lever shafts; the rear wheel shaft of the speed changer is fixedly connected with one of the central gears, the internal gear is fixedly connected with the disc, and the central gear is also fixedly connected with the disc; the outer fixed disc and the inner fixed disc fix a transmission gear through a pin shaft, and the transmission gear is arranged between the central gear and the internal gear; the lath is fixedly connected on the external fixed disk, the lath is provided with a preformed hole and fixed together with a screw, and the screw is fixed on the rear wheel frame.

In the lever speed-changing bicycle, one of the clamping pieces is fixed on one of the pulling strips, and one of the pulling strips is fixed on one of the slideway wheels; the second card is fixed on the second pulling strip, and the second pulling strip is fixed on the second slideway wheel; the third clamping piece is fixed on the third pulling strip which is fixed on the third slideway wheel; the gear shifting key is connected with one of the gear shifters and is connected with the third slideway wheel, and the third clamping piece is clamped on the fourth central gear; the second gear shifter is connected with the second slideway wheel, and the second clamping piece is clamped on the third central gear; the third gear shifter is connected with one of the slideway wheels, and one of the clamping pieces is clamped on the second central gear.

According to the lever speed-changing bicycle, the two ends of the steel rope are buckled with the dead rings and then sleeved on the safety buckle through the slideway wheels.

The lever speed-changing bicycle is characterized in that the dynamic form of the gear structure is as follows: two of the central gears rotate for one circle, and one of the internal gears rotate for one circle; one of the internal gears rotates for one circle, and one of the central gears rotates for 5.8 circles; the third gear rotates one turn, and the second gear rotates one turn; the second internal gear rotates for one circle, and the second central gear rotates for 5.8 circles; when the three gearboxes are connected in series, three of the central gears rotate for one circle, and one of the central gears rotates for 33.6 circles; four rotations of the central gear and three rotations of the internal gear are simultaneously performed for one rotation; the third internal gear rotates for one circle, and the third central gear rotates for 5.8 circles; when three gearboxes are connected in series, four of the sun gears make one revolution and one of the sun gears makes 195 revolutions.

One of the lathes is fixedly connected to one of the outer fixing discs, the second lath is fixedly connected to the second outer fixing disc, and the third lath is fixedly connected to the third outer fixing disc.

One of the pull bars is connected with one of the slideway wheels, the second of the pull bars is connected with the second of the slideway wheels, and the third of the pull bars is connected with the third of the slideway wheels.

One of the internal gears is fixedly connected with one of the disks, the second central gear is fixedly connected with one of the disks, the second internal gear is fixedly connected with the second disk, the third central gear is fixedly connected with the second disk, the third internal gear is fixedly connected with the third disk, and the fourth central gear is fixedly connected with the third disk.

In the lever speed-changing bicycle, the second central gear, the third central gear and the fourth central gear are provided with key grooves, and the clamping pieces are movably arranged in the key grooves.

The invention has the advantages and effects that:

1. the lever bicycle can increase the torque, and the length of the lever can be selected to be 550-650 mm, so that the bicycle can obtain larger power. The power of the bicycle comes from the length of the lever, and the length of the lever bicycle is about 3 times of that of the crank, so that the power of the bicycle is greatly improved.

2. The tail end of a lever is of a ratchet structure and is connected with two ends of a wheel axle, the lever swings up and down and is connected by a steel rope, and the height of the up-and-down swing center of the lever and the up-and-down swing amplitude of the lever can be adjusted.

3. The lever bicycle body utilization rate of the invention is more than 95%, the lever swings up and down to generate bicycle torque min which changes from 95% to max 100%, the body utilization rate is greatly improved, and the lever bicycle body utilization rate can provide traffic convenience for more bicycle enthusiasts in long-distance driving.

4. The lever bicycle of the invention can pedal nine cycles, the pedal needs 1/9 of the speed change ratio at one time, the speed change ratio is more than 195 times at most, if the pedal rotates 21 cycles, the speed change ratio can be increased, and far exceeds the chain speed change ratio.

5. The gear ratio of the lever bicycle gear is more than 20 times at most, and far exceeds the gear ratio of a chain, the space of the speed changer and the through shaft of the wheel is reduced, the structure is simplified, the speed changer is convenient to shift, and the lever bicycle gear is more suitable for climbing and accelerating.

Drawings

FIG. 1 is a schematic structural view of a lever bicycle in accordance with the present invention;

FIG. 2 is a schematic view of the construction of the lever shaft and the rear wheel shaft of the present invention;

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

FIG. 4 is a schematic structural view of the compound transmission of the present invention;

FIG. 5 is a schematic structural view of a fixing plate according to the present invention;

FIG. 6 is a schematic cross-sectional view of FIG. 5;

FIG. 7 is a schematic view of the disk and sun gear of the present invention;

FIG. 8 is a schematic view of a gear and a card according to the present invention;

FIG. 9 is a graph comparing the lever torque and the crank torque of the present invention.

The components in the figure: lever 1, cable 2, group transmission 3, lever shaft 4, pedal 5, frame 6, seat 7, hand brake 8, shift key 9, rear fork 10, front fork 11, front wheel 12, rear wheel 13, rear wheel bearing fixing groove 14, front wheel disc brake 15, left bearing 16, right bearing 17, rear wheel shaft 18, rear wheel disc brake 19, one of the gearboxes 20, two of the gearboxes 21, three of the gearboxes 22, one of the slideway wheels 23, two of the slideway wheels 24, three of the slideway wheels 25, one of the clamping pieces 26, two of the clamping pieces 27, three of the clamping pieces 28, one of the shifter 29, two of the shifter 30, three of the shifter 31, screw 32, one of the slat 33, two of the slat 34, slat 35, one of the outer fixing discs 36, one of the inner fixing discs 37, one of the sun gears 38, one of the inner gears 39, one of the disc 40, one of the outer fixing discs 41, two of the inner fixing discs 42, two of the sun gears 43, two of the rear wheel disc 19, and the shift lever, Two inner gears 44, two discs 45, three outer fixed discs 46, three inner fixed discs 47, three sun gears 48, three inner gears 49, three discs 50, four sun gears 51, one brace 52, two braces 53, three braces 54, a fixed disc center hole 55, a gear hole 56, another gear hole 57, a disc member 58, an inner gear member 59, a sun gear member 60, a card member 61, and a gear member 62.

Detailed Description

The present invention will be described in detail with reference to the embodiments shown in the drawings.

As shown in figure 1, the lever bicycle of the invention has two levers, one on the left and one on the right, which are fixed on two ends of a lever shaft 4, the lever shaft 4 is rotated by swinging a steel rope 2 up and down, the steel rope is sleeved on a safety buckle through a slideway wheel, the slideway wheel is welded on an inclined frame behind a saddle 7, the safety buckle is welded on the lever 1, and two buckle rings on two ends of the steel rope 2 are sleeved on the safety buckle through the slideway wheel. The first shifter 29, the second shifter 30 and the third shifter 31 are fixed on the semicircular channel steel at the tail end of the frame, the first clamping piece 26 is fixed on the first brace 52, and the first brace 52 is fixed on the first slideway wheel 23. The second card 27 is fixed to the second bar 53 and the second bar 53 is fixed to the second wheel 24. The third card 28 is fixed to the third brace 54, and the third brace 54 is fixed to the third ramp wheel 25. Under the control of the shift key 11, one of the shifters 29 is moved to be pulled, and the third slide wheel 25 is moved to be pulled, so that the third card 28 is locked on the fourth gear 51 of the central gear. When the second shifter 30 is moved in tension, the second ramp wheel 24 is moved in tension, causing the second card 27 to catch on the third sun gear 48. When the third gear shifter 31 is moved in tension, one of the ramp wheels 23 is moved in tension, so that the one of the engaging pieces 26 engages with the second sun gear 43. One of the gearboxes 20, the second gearbox 21 and the third gearbox 22 are connected in series on the lever shaft 4, the second gear 43 rotates once, and the first gear 39 rotates once; one of the internal gears 39 rotates one turn, and one of the central gears 38 rotates 5.8 turns; one rotation of the third sun gear 48 and one rotation of the second ring gear 44; the second gear 44 rotates one turn, and the second gear 43 rotates 5.8 turns; the first gearbox 20 and the second gearbox 21 being connected in series, in use, one revolution of the third sun gear 48 and one revolution of the first sun gear 38 being 33.6; one rotation of four 51 of the central gear and one rotation of three 49 of the internal gear; the third internal gear 49 rotates for one circle, and the third central gear 48 rotates for 5.8 circles; the first gearbox 20, the second gearbox 21 and the third gearbox 22 are connected in series, and when the gearbox is used, the fourth gear 51 of the central gear rotates for one circle, and the first gear 38 of the central gear rotates for 195 circles; one of the strips 33 is welded on one of the outer fixing discs 36, the second strip 34 is welded on the second outer fixing disc 41, the third strip 35 is welded on the third outer fixing disc 46, the reserved through holes of the strips are fixed on the screw rods 32, the screw rods are fixed on the tail end of the frame, and only one card can be clamped, but two or three cards cannot be clamped simultaneously.

As shown in fig. 2, the lever axis and the rear wheel axis illustrate:

the rear wheel 13 is arranged on a rear wheel shaft 18 and fixed by a screw cap, two bearings are fixed on the rear wheel shaft, and the two bearings are arranged in a rear wheel bearing fixing groove; the rear wheel disc brake piece 19 is installed at the rear wheel axle and the gearbox is installed on the lever shaft, the lever shaft 4 is provided with a key groove, a brace is arranged in the key groove, the lever shaft 4 is installed at the center of the rear wheel axle, one of the slideway wheels 23, the second slideway wheel 24 and the third slideway wheel 25 are installed on the lever shaft 4, and the lever 1 is installed at two ends of the lever shaft 4.

As shown in fig. 3, the shifter illustrates:

the first slide way wheel 23, the second slide way wheel 24 and the third slide way wheel 25 are arranged on the lever shaft 4, the first brace 52 is connected with the first slide way wheel 23, the second brace 53 is connected with the second slide way wheel 24, the third brace 54 is connected with the third slide way wheel 25, the first shifter 29, the second shifter 30 and the third shifter 31 are fixed on a rear wheel bearing fixing groove, and the slide way wheels move left and right and rotate synchronously with the lever shaft.

As shown in fig. 4, the transmission diagram illustrates:

the rear wheel shaft 18 is welded with one of the central gears 38, one of the internal gears 39 is welded with one of the circular discs 40, the second central gear 43 is welded with one of the circular discs 40, the second internal gear 44 is welded with the second circular disc 45, the third central gear 48 is welded with the second circular disc 45, the third internal gear 49 is welded with the third circular disc 50, the fourth central gear 51 is welded with the third circular disc 50, the outer fixed disc and the inner fixed disc are used for fixing a transmission gear through a pin shaft, the transmission gear is arranged between the central gear and the internal gear, and when the second central gear 43 rotates for one circle, the first central gear 38 rotates for 5.8 circles; when the third 48 of the sun gears makes one rotation, the first 38 of the sun gears makes 33 rotations; one of the sun gears 38 makes one rotation at four times 51, and one rotation at 195 times; the second 43 central gear, the third 48 central gear and the fourth 51 central gear are provided with key slots, the card moves in and out of the key slots, the first 33 lath is welded on the first 36 external fixed disc, the second 34 lath is welded on the second 41 external fixed disc, the third 35 lath is welded on the third 46 external fixed disc, the lath is provided with a reserved hole and fixed together with a screw 32, and the screw is fixed on a rear wheel frame.

FIG. 5 is a schematic structural view of a fixing plate according to the present invention; fig. 6 is a schematic cross-sectional view of fig. 5.

A fixed disk center hole 55, a gear hole 56, another gear hole 57 and a disk member 58; except the central hole 55 of the fixed disc, the other 6 transmission holes are connected together by a pin shaft, and the tail end of the pin shaft is fixed by a clamp spring or a nut.

The structure of the internal fixed disk is the same as that of the external fixed disk, but 6 transmission holes are welded together by using a pin shaft, and the transmission gear rotates on the pin shaft.

FIG. 7 is a schematic view of the disk and sun gear of the present invention; the internal gear member 59 and the sun gear member 60 illustrate: the internal gear member 59 is welded to the disc member 58, the sun gear member 60 is welded to the disc member 58, and the internal gear member 59 rotates one revolution of the sun gear member 60.

FIG. 8 is a schematic view of a gear and a card according to the present invention; gear member 62 and card member 61 fig. 8 illustrates: the card member 61 is connected to the pull bar by a thin steel cable perforation, and the lever shaft 9 and the gear rotate together when the card enters the gear member 62.

FIG. 9 is a graph comparing the lever torque and the crank torque of the present invention. The crank rotates to enable the torque to change at 0-100%, the lever torque changes at 95-100%, and the physical energy utilization rate is improved.

The lever round points of the lever bicycle are designed on the lever shaft, the space is reduced structurally, the length of the lever is 3 times longer than that of a crank of the chain bicycle, the power is increased by 3 times, the rotation of the crank of the chain bicycle enables the torque to change within 0-100%, the physical performance utilization rate is 50%, the torque change of the lever bicycle is 95-100%, and the physical performance utilization rate is greatly improved. The single speed ratio of the gear box of the invention is 5.8 times, three gear boxes are combined in series, the speed ratio reaches 195 times, because the speed ratio is large, the lever bicycle needs to be shifted at low speed, medium speed and high speed, the climbing and the acceleration are more easy, the superiority of the lever bicycle can be better exerted, the lever pedals for 9 times, the lever shaft rotates for one circle, the lever is pedaled once, the wheel rotates for 21 circles maximally, and the speed per hour of the lever bicycle can reach 50-80 kilometers; the bicycle has the advantages of larger speed ratio, faster speed per hour, longer continuous running time, and combination of lever and gear change and gear shift, and the speed ratio obviously exceeds that of the bicycle with crank rotation.

The two levers 1 of the lever bicycle are connected with two ends of the lever shaft 4, the received torque is relatively balanced a little, the design range of the bicycle frame 6 can be larger, and the structure is properly changed. The combined speed changer 3 and the gear shifter are arranged on two sides of the lever shaft 4, so that the deviation of the central point of the left side and the right side is less, if the lever of the lever bicycle is designed at one end of the lever shaft, the design range of the bicycle frame 6 can be exceeded, the deviation of the central point of the left side and the right side is more, namely, the lever shaft 4 is designed in the center of the rear wheel shaft 18, and the using effect of the lever bicycle designed in the way is still the same.

Claims

1. A lever speed-changing bicycle comprises a lever, a steel rope, a speed changer, a lever shaft, a pedal, a bicycle frame, a bicycle seat, a hand brake, a gear shifting key, a rear fork, a front wheel, a rear wheel bearing fixing groove, a bearing, a rear wheel shaft, a disc brake sheet, a gearbox, a slideway wheel, a clamping sheet, a gear shifter, a screw rod, a lath, a fixing sheet, a central gear, an inner gear, a disc and a brace; it is characterized in that the lever round points of the lever bicycle are arranged on the lever shaft; two levers (1) are arranged and are fixed at two ends of a lever shaft (4), a steel rope is sleeved on a safety buckle through a slideway wheel, the slideway wheel is fixedly connected on an inclined frame behind a saddle (7), the safety buckle is fixedly connected on the lever (1), three gear shifters are fixed on a semicircular channel steel at the tail end of the frame, and three gear boxes are connected on the lever shaft (4) in series; the clamping piece is fixed on a brace, and the brace is fixed on a slideway wheel; the gear shifting key (11) is connected with the gear shifter and the slide wheel, and the clamping piece is clamped on the gear; the lath is fixedly connected on the fixed disc; the lath is reserved with a through hole and fixed on a screw rod (32), the screw rod is fixed on the tail end of the frame, and only one card can be clamped, but two or three cards can not be clamped simultaneously; the lever shaft and a rear wheel (13) of the rear wheel shaft are arranged on the rear wheel shaft (18) and fixed by a screw cap, two bearings are fixed on the rear wheel shaft, and the two bearings are arranged in a rear wheel bearing fixing groove; the rear wheel disc brake sheet (19) and the transmission are arranged on a rear wheel shaft, the lever shaft (4) is provided with a key groove, a brace is arranged in the key groove, the lever shaft (4) is arranged in the center of the rear wheel shaft, and the three slideway wheels are arranged on the lever shaft (4); three slideway wheels of the gear shifter are arranged on the lever shaft (4); the brace is connected with the slideway wheel; the three gear shifters are fixed on the rear wheel bearing fixing grooves, and the slide way wheels move left and right and rotate synchronously with the lever shafts; the rear axle (18) of the speed changer is fixedly connected with one (38) of the central gears, the internal gear is fixedly connected with the disc, and the central gear is also fixedly connected with the disc; the outer fixed disc and the inner fixed disc fix a transmission gear through a pin shaft, and the transmission gear is arranged between the central gear and the internal gear; the lath is fixedly connected on the external fixed disk, the lath is provided with a preformed hole and fixed together with a screw rod (32), and the screw rod is fixed on the rear wheel frame.

2. A lever-shift bicycle according to claim 1, characterised in that one of said tabs (26) is fixed to one of the braces (52), one of the braces (52) being fixed to one of the ramp wheels (23); the second card (27) is fixed on the second brace (53), and the second brace (53) is fixed on the second slideway wheel (24); the third card (28) is fixed on the third brace (54), and the third brace (54) is fixed on the third slideway wheel (25); the shift key (11) is connected with one (29) of the shifters, connected with the third (25) of the slideway wheels, and the third (28) of the clamping pieces is clamped on the fourth (51) of the central gear; the second gear shifter (30) is connected with the second slideway wheel (24), and the second clamping piece (27) is clamped on the third central gear (48); the third shifter (31) is connected to one of the ramp wheels (23), and one of the engagement pieces (26) is engaged with the second sun gear (43).

3. The lever-speed bicycle according to claim 1, wherein the cable (2) is fastened to the safety buckle by a slide wheel after being fastened to the dead ring.

4. A lever-shifted bicycle according to claim 1, wherein the gear structure dynamic form is: one (39) of the internal gears rotates one revolution at the same time as the other (43) of the sun gear rotates one revolution; one of the internal gears (39) rotates one turn, and one of the central gears (38) rotates 5.8 turns; one revolution of the third sun gear (48) and one revolution of the second ring gear (44) simultaneously; the second internal gear (44) rotates for one circle, and the second central gear (43) rotates for 5.8 circles; when three gearboxes are connected in series, three (48) of the central gears rotate for one circle, and one (38) of the central gears rotates for 33.6 circles; four (51) of the central gears rotate once, and three (49) of the internal gears rotate once at the same time; the third internal gear (49) rotates for one circle, and the third central gear (48) rotates for 5.8 circles; when three gearboxes are connected in series, four (51) of the sun gears rotate one revolution and one (38) of the sun gears rotates 195 revolutions.

5. A lever-variable bicycle according to claim 1, wherein one (33) of said slats is fixedly attached to one (36) of said external fixing discs, the second (34) of said slats is fixedly attached to the second (41) of said external fixing discs, and the third (35) of said slats is fixedly attached to the third (46) of said external fixing discs.

6. A lever-shifted bicycle according to claim 1, wherein one of the braces (52) is connected to one of the ramp wheels (23), the second brace (53) is connected to the second ramp wheel (24), and the third brace (54) is connected to the third ramp wheel (25).

7. A lever-variable bicycle according to claim 1, wherein one of said annulus gears (39) is fixedly connected to one of said discs (40), the second sun gear (43) is fixedly connected to one of said discs (40), the second annulus gear (44) is fixedly connected to the second disc (45), the third sun gear (48) is fixedly connected to the second disc (45), the third annulus gear (49) is fixedly connected to the third disc (50), and the fourth sun gear (51) is fixedly connected to the third disc (50).

8. A lever-shifted bicycle according to claim 1, wherein the second (43), third (48) and fourth (51) sun gears are provided with key slots in which the locking pieces are movably arranged.

9. A lever-variable bicycle according to claim 1, wherein one (33) of said slats is fixedly attached to one (36) of said external fixing discs, the second (34) of said slats is fixedly attached to the second (41) of said external fixing discs, and the third (35) of said slats is fixedly attached to the third (46) of said external fixing discs.

10. A lever-shifted bicycle according to claim 1, characterised in that the lever bicycle, in another form of combination, has the combination derailleur (3) and shifter mounted on both sides of a lever shaft (4), the lever shaft (4) being arranged centrally on the rear wheel axle (18); the rest of the structure is the same as described above.