CN203158186U

CN203158186U - Automatic gearbox for bicycle

Info

Publication number: CN203158186U
Application number: CN 201220653390
Authority: CN
Inventors: 王平; 王华楠
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-23
Filing date: 2012-11-23
Publication date: 2013-08-28
Anticipated expiration: 2022-11-23

Abstract

The utility model discloses an automatic gearbox for a bicycle. The automatic gearbox for the bicycle comprises a felly casing, a left end cover, a right end cover and a main shaft; the main shaft penetrates out of the left and the right end cover; a double central gear and a single central gear are arranged on the main shaft; a cross axle sleeve is mounted on the left side of the main shaft, at the part outside the left end cover; the cross axle sleeve is sleeved with a chain wheel; a level I annular gear, a level II annular gear and a level III annular gear are arranged in the felly casing respectively; an outer ratchet is arranged in each of the level II annular gear and the level III annular gear; the level I annular gear is inserted into the cross axle sleeve; the main shaft is sleeved with a front catch and a rear catch at the position of the two ends of the double central gear respectively; a disk planetary gear carrier is arranged between the front and the rear catch; a plurality of first cylinder pins are arranged on the circular planetary gear carrier; and the front parts of the plurality of cylinder pins are provided with level I planetary gear sets at the positions corresponding to the level I annular gear. Compared with the prior art, the automatic gearbox for the bicycle has the advantages of simple structure, flexible speed changing operation, low possibility of part damage, convenience for maintenance, and the like.

Description

A kind of automatic speed-changing device for bicycle

Technical field

The utility model relates to a kind of driving device, particularly relates to a kind of for the automatic transmission with hydraulic torque converter on the bicycle.

Background technology

China is a bicycle big country, because populous, so the owning amount of bicycle is big especially, and bicycle also exports many countries.Use bicycle as the vehicle of riding instead of walk, not only can energy savings, can not cause environmental pollution, and floor area is little, deposit flexible, low price particularly, be fit to ordinary people's consumption, often be of value to people's health by bike, this shows, bicycle also has very big development space as a kind of vehicle.But the existing bicycle that uses also exists some shortcomings, and the bicycle structure of traditional chain gear is simple, and is with low cost, but can not speed change, so effort relatively by bike.In order to solve the speed change problem, on the market a lot of variable speed bicycles have appearred now, basically be to come speed change by the flywheel that engages the different numbers of teeth when adopting transmission, though this bicycle has solved the speedup problem, but the structure more complicated, variable speed operation is loaded down with trivial details dumb, automatically speedup and deceleration, and parts damage easily, not easy-maintaining.

The utility model content

In order to solve defective and the deficiency that above-mentioned existing bicycle exists, the utility model provides a kind of automatic speed-changing device for bicycle.

The technical scheme that adopts is:

A kind of automatic speed-changing device for bicycle, comprise outer hub, left end cap, right end cap, main shaft, described main shaft passes left and right sides end cap, and supported by the bearing of installing on the end cap of the left and right sides, be equiped with duplex sun gear and simply connected sun gear on the described main shaft, the outside that the left side of main shaft is positioned at left end cap is equiped with the cross axle sleeve, center cross puts and is set with a sprocket wheel, be equiped with I retaining internally toothed annulus in the outer hub respectively, II retaining internally toothed annulus and III retaining internally toothed annulus, II retaining internally toothed annulus and III retaining internally toothed annulus all have outer ratchet, I retaining internally toothed annulus is plugged in described center cross and puts, catch before and after being equipped with by bearing carrier ring respectively on the main shaft at duplex sun gear two ends, be equiped with the disk planetary gear carrier between the catch of front and back, be equiped with a plurality of first straight pins on the dish planetary gear carrier of garden, the front portion of a plurality of first straight pins and I retaining internally toothed annulus corresponding section are equiped with I retaining compound planet gear, II retaining compound planet gear cooperates with the duplex sun gear, the rear portion of a plurality of first straight pins and II retaining internally toothed annulus corresponding section are equiped with II retaining compound planet gear, II retaining compound planet gear matches with II retaining internally toothed annulus, III retaining internally toothed annulus is installed on the supporting disk assembly, be equiped with a plurality of second straight pins between supporting disk assembly and the II retaining internally toothed annulus, be equiped with III retaining compound planet gear on second straight pin, III retaining compound planet gear cooperates with III retaining internally toothed annulus.On the inner arm of outer hub with I retaining internally toothed annulus corresponding section at least axle be connected with an I retaining ratchet, on the inner arm of outer hub with II retaining internally toothed annulus corresponding section at least axle be connected with an II retaining ratchet, on the inner arm of outer hub with III retaining internally toothed annulus corresponding section at least axle be connected with an III retaining ratchet, be equiped with pull back spring respectively near two II retaining ratchets and two III retaining ratchet places in the outer hub

Be equiped with centrifugal balance main part near III retaining internally toothed annulus place in the above-mentioned outer hub, be equiped with seal ring, seal cover cap and protecting cover respectively in the port of the cross axle sleeve in main shaft left side and the right end cap on main shaft right side.

Advantages such as the present invention compared with prior art has simple in structure, and variable speed operation is flexible, and parts are not fragile, and are easy to maintenance.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 1.

Fig. 4 is that the centrifugal scheme drawing of analysing is installed at centrifugal balanced component place in the outer hub.

The specific embodiment

A kind of automatic speed-changing device for bicycle, comprise outer hub 1, left end cap 2, right end cap 3, main shaft 4, main shaft 4 passes left and right sides end cap 2,3, and by left and right sides end cap 2, the bearing of installing is supported on 3, be equiped with duplex sun gear 5 and simply connected sun gear 6 on the main shaft 4, the outside that the left side of main shaft 4 is positioned at left end cap 2 is equiped with cross axle sleeve 7, be set with a sprocket wheel 8 on the cross axle sleeve 7, be equiped with I retaining internally toothed annulus 9 in the outer hub 1 respectively, II retaining internally toothed annulus 10 and III retaining internally toothed annulus 11, II retaining internally toothed annulus 10 and III retaining internally toothed annulus 11 all have outer ratchet, I retaining internally toothed annulus 9 is plugged on the cross axle sleeve 7, by bearing carrier ring left and right sides catch 12 is housed respectively on the main shaft of duplex sun gear 5 both sides, 13, left and right sides catch 12, be equiped with disk planetary gear carrier 14 between 13, be equiped with four first straight pins 15 on the dish planetary gear carrier 14 of garden, the front portion of four first straight pins 15 and I retaining internally toothed annulus 9 corresponding sections are equiped with I retaining compound planet gear 16, I retaining compound planet gear is made up of four star gears, I retaining compound planet gear 16 cooperates with duplex sun gear 5, the rear portion of four first straight pins 15 and II retaining internally toothed annulus 10 corresponding sections are equiped with II retaining compound planet gear 17, II retaining compound planet gear 17 is made up of four star gears, II retaining planetary wheel 17 matches with II retaining internally toothed annulus 10, III retaining internally toothed annulus 11 is installed on the supporting disk assembly 18, be equiped with four second straight pins 19 between supporting disk assembly 18 and the II retaining internally toothed annulus 10, be equiped with III retaining compound planet gear 20 on four second straight pins 19, III retaining compound planet gear 20 is made up of four star gears, and III retaining compound planet gear 2 cooperates with III retaining internally toothed annulus 11.Be connected with two I retaining ratchets 21 with I retaining internally toothed annulus 9 corresponding section axles on the inner arm of outer hub 1, and two I retaining ratchets 21 are mutually 180 degree, be connected with two II retaining ratchets 22 with II retaining internally toothed annulus 10 corresponding section axles on the inner arm of outer hub 1, and two II retaining ratchets 22 are mutually 180 degree, be connected with two III retaining ratchets 23 with III retaining internally toothed annulus 11 corresponding section axles on the inner arm of outer hub, and two III retaining ratchets 23 are mutually 180 degree, be equiped with centrifugal balance main part 24 near III retaining internally toothed annulus 11 places in the outer hub 1, be equiped with seal ring 28 respectively in the port of the right end cap 3 on the cross axle sleeve 7 in main shaft 4 left sides and main shaft 4 right sides, seal cover cap 25 and protecting cover 26.Be equiped with pull back spring 27 respectively near two II retaining ratchets 22 and two III retaining ratchet 23 places in the outer hub 1.

Claims

1. automatic speed-changing device for bicycle, comprise outer hub, left end cap, right end cap, main shaft, described main shaft passes left and right sides end cap, and supported by the bearing of installing on the end cap of the left and right sides, be equiped with duplex sun gear and simply connected sun gear on the described main shaft, the outside that the left side of main shaft is positioned at left end cap is equiped with the cross axle sleeve, center cross puts and is set with a sprocket wheel, be equiped with I retaining internally toothed annulus in the outer hub respectively, II retaining internally toothed annulus and III retaining internally toothed annulus, II retaining internally toothed annulus and III retaining internally toothed annulus all have outer ratchet, I retaining internally toothed annulus is plugged in described center cross and puts, catch before and after being equipped with by bearing carrier ring respectively on the main shaft at duplex sun gear two ends, be equiped with the disk planetary gear carrier between the catch of front and back, be equiped with a plurality of first straight pins on the dish planetary gear carrier of garden, the front portion of a plurality of first straight pins and I retaining internally toothed annulus corresponding section are equiped with I retaining compound planet gear, II retaining compound planet gear cooperates with the duplex sun gear, the rear portion of a plurality of first straight pins and II retaining internally toothed annulus corresponding section are equiped with II retaining compound planet gear, II retaining compound planet gear matches with II retaining internally toothed annulus, III retaining internally toothed annulus is installed on the supporting disk assembly, be equiped with a plurality of second straight pins between supporting disk assembly and the II retaining internally toothed annulus, be equiped with III retaining compound planet gear on second straight pin, III retaining compound planet gear cooperates with III retaining internally toothed annulus, on the inner arm of outer hub with I retaining internally toothed annulus corresponding section at least axle be connected with an I retaining ratchet, on the inner arm of outer hub with II retaining internally toothed annulus corresponding section at least axle be connected with an II retaining ratchet, on the inner arm of outer hub with III retaining internally toothed annulus corresponding section at least axle be connected with an III retaining ratchet, is equiped with pull back spring respectively near two II retaining ratchets and two III retaining ratchet places in the outer hub.

2. a kind of automatic speed-changing device for bicycle according to claim 1, it is characterized in that being equiped with centrifugal balance main part near III retaining internally toothed annulus place in the described outer hub, be equiped with seal ring, seal cover cap and protecting cover respectively in the port of the cross axle sleeve in main shaft left side and the right end cap on main shaft right side.