CN2239389Y - Bicycle two-way six-staged inner speed variator - Google Patents

Abstract

The utility model relates to a two-way six-stage inner speed variator for bicycles, which comprises a shaft roller, a shaft bowl arranged on the shaft roller by utilizing a shaft bumper, a shaft body and a speed change mechanism, wherein a shift draw rod in a hollow cavity of the shaft roller is connected with a cruciform wheel of the speed change mechanism together to drive the cruciform wheel to move along a slide groove of a flower groove sleeve, so the multi-stage speed change is realized. A ratchet on the end surface of a wheel bracket of a small planetary wheel can form a reverser with a reversing ratchet pawl hinged on the bracket of a dust-proof cover to carry out the reversing. The utility model has the advantages of compact structure, easy fabrication, positive and negative bi-directional driving and convenient operation, and can effectively overcome the defects of easy abrasion, etc. in the prior art. The utility model obviously reduces the cost, improves the use performance and extends the service life.

Description

Two-way six class internal speed variators of bicycle use

The utility model relates to a kind of bicycle use internal speed-changing device, particularly a kind of two-way six class internal speed variators.

Along with improving constantly of people's living standard, bicycle is very universal.The kind of existing bicycle is more, develops into senior speed change vehicle by ordinary vehicle type, and its speed changing structure has outer change-speed box of stepped-wheel type and closed internal speed changer iso-variable velocity device.At present, outer change-speed box is used more, but because of its entire infrastructure is exposed, totally-enclosed chain cover can't be installed, thus through wind and weather, rain, snow and dust, earth, parts easy-to-rust, wearing and tearing, as the oil injecting lubricating clothing etc. of easily making dirty, inconvenience is safeguarded.Damages such as consumable accessory flywheel sheet, little guide wheel influence the bicycle cruising in addition, and severe patient can cause contingency, gives sense of insecurity.Existing internal speed changer has only secondary or three-range transmission, can only drive by forward pedaling, can not the back-pedalling speed change travel.

The purpose of this utility model provides two-way six class internal speed variators of a kind of bicycle use, its compact conformation, make easily, can positive and negative bi-directional drive, and easy to operate, the shortcoming such as easy to wear that can overcome effectively that prior art exists, significantly cost-cutting improves in-use performance and service life.

The purpose of this utility model is achieved in that this device comprises a rod and utilizes the axle bowl of axle shelves assembling on it, axle body and speed-changing mechanism, its axis rod one end is fixed with and the little core wheel of major planets wheel ingear, gear shift pull bar in the axle rod other end hollow cavity is by wearing pin and retracing spring, sliding sleeve, link together with the cross wheel of speed-changing mechanism, driving the cross wheel moves along the chute that the flower groove overlaps, the flower groove puts and is fixed with and the big core wheel of asteroid wheel ingear, asteroid wheel wheel carrier end face is processed with ratchet, and the commutation ratchet that is meshed with it utilizes bearing pin to be hinged on the cover of dust support.

Because the utility model adopts the gear shift pull bar of easy to operate brake cable control to drive the cross wheel of speed-changing mechanism, chute along flower groove cover moves, realize transforming gear, its compact conformation, gear shift are flexible, and the commutator that utilizes commutation ratchet and ratchet to constitute can make the positive and negative direction of sprocket wheel drive in addition, equal energy forward travel, realize two-way six grades of speed changes, remarkable cost-cutting improves the in-use performance of this device.Because of oil sealing envelope and totally-enclosed chain cover in can installing, can prevent parts corrosion, wearing and tearing, so can increase its in-use performance and service life.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is a kind of concrete structure scheme drawing of the utility model.

Describe concrete structure of the present utility model in detail according to Fig. 1.This device comprises a rod 1, utilize axle shelves 2,18 be assembled in axle bowl 3,10 on the rod 1, flower groove cover 17, with mounting ring 19, jam nut 21 stack-mounted cover of dusts 22, be processed with the axle body 34 and the speed-changing mechanism in spoke hole.Its axis rod 1 solid-end is fixed with major planets and takes turns the little core wheel 4 of 7 ingears; Gear shift pull bar 20 is housed in the hollow cavity of another hollow end, gear shift pull bar 20 is worn pin 30, retracing spring 26, sliding sleeve 32 by what can move in its rod wall chute, link together with the cross wheel 31 of speed-changing mechanism, gear shift pull bar 20 ends and gear shift brake cable join, the pulling brake cable utilizes gear shift pull bar 20 to drive cross wheel 31 and moves along the chute of spending groove cover 17.On flower groove cover 17, utilize spacer ring 29 and back-up ring 16 to be fixed with and the big core wheel 14 of asteroid wheel 13 ingears.Be fixed with sprocket wheel 11 with gear cover 12 peripheries in asteroid wheel 13 ingears that are assembled on wheel carrier 15 and the ring stand 27, interior week also is processed with ratchet, big core take turns 14 peripheries and this ratchet corresponding section be hinged with very heavy 28, formation single direction ratchet A.Be assembled in wheel carrier 6 and ring stand 33 on major planets wheel 7 internally toothed annuluss that are meshed 8 periphery annular grooves in be hinged with very heavyly 9, be processed with ratchet with very heavy 9 corresponding sections in the axle bowl 10, constitute single direction ratchet B.Be hinged with very heavyly 5 in the wheel carrier 6 periphery annular grooves of major planets wheel 7, week is processed with ratchet with very heavy 5 corresponding sections in the axle bowl 3, constitutes single direction ratchet C.The ratchet processing of commutator is at the end face of asteroid wheel 13 wheel carriers 15, and the commutation ratchet 25 that is meshed with it utilizes bearing pin 24 to be hinged on the cover of dust 22.The brake cable hole 23 of ratchet 25 ends connects the commutation brake cable, and spur the commutation brake cable ratchet 25 of commutator is rotated around bearing pin 24, when the pawl end inserts asteroid wheel 13 wheel carriers 15 end face ratchets, wheel carrier 15 lockings, single direction ratchet A does not have extension and closes.This moment, the backward pedaling sprocket wheel 11, and wheel is still realized from marching forward.

During use, this device is installed on the bicycle rear and with spoke tension axle body 34.Manipulation is packed in the gear shift brake lever on the handlebar, pulling gear shift brake cable makes gear shift pull bar 20 drive crosses wheel 31 and moves to right-hand end and the internally toothed annulus 8 gear shift internal gearings that colored groove overlaps 17 chutes, makes very heavy 9 of ratchet B break away from ratchet on the axle bowls 10 simultaneously, very heavy 9 neutral gears, be the I shelves this moment.Internally toothed annulus 8 drives axle body 34 by major planets wheel 7, wheel carrier 6, axle bowl 3 and single direction ratchet C therebetween again and rotates under the driving of cross wheel 31, makes the operation of cycle wheel forward.

When the gear shift brake lever moves on to the middle part that colored groove overlaps 17 chutes with cross wheel 31, make the ratchet engagement of very heavy 9 and the axle bowl 10 of ratchet B simultaneously, very heavy 9 extensions close, and be the II shelves this moment, uses shelves always.Internally toothed annulus 8 rotates under the driving of cross wheel 31, and single direction ratchet B drives axle bowl 10, axle body 34 rotates, and makes the operation of cycle wheel forward.

When the gear shift brake lever cross is taken turns 31 and move on to the left-hand end that colored groove overlaps 17 chutes, cross wheel 31 is taken turns 7 axle heads overlap joint with major planets, and be the III shelves this moment.Under the driving of cross wheel 31, directly drive major planets wheel 7, wheel carrier 6,34 rotations of single direction ratchet C drive axle body, make the operation of cycle wheel forward.

Scrunch pedal when travelling, legpower on the pedal passes to sprocket wheel 11 by chain, gear cover 12 forward rotation in driving, single direction ratchet A hangs and closes, drive big core wheel 14,17 rotations of flower groove cover, utilize the flower groove to overlap cross wheel 31 in 17 chutes, can realize that above-mentioned I, II, three kinds of low gear conversion of III shelves carry out forward travel in the position of different transforming gears.

Manipulation is packed in the commutator brake lever on the handlebar, and pulling commutation brake cable utilizes ratchet 25 to be meshed with wheel carrier 15 end face ratchets, locking wheel carrier 15.This moment, the backward pedaling pedal travelled, legpower on the pedal is by chain gear sprocket wheel 11, gear cover 12 backward rotation in driving, single direction ratchet A does not have to hang and closes (idle running) asteroid wheel 13 and sway, and drives big core wheel 14, the flower groove overlaps 17 still by the former forward rotation that turns to.The cross wheel 31 that utilizes the flower groove to overlap in 17 chutes can be realized IV, V, three kinds of high speed geares of VI shelves at above-mentioned I, II, three gears of III, forward travel, and its converter speed ratio can select the modulus and the number of teeth of each star-wheel or core wheel determine according to designing requirement.

Claims (5)

1, two-way six class internal speed variators of a kind of bicycle use, comprise a rod and utilize the axle bowl of axle shelves assembling on it, axle body and speed-changing mechanism, it is characterized in that a rod one end is fixed with and the little core wheel of major planets wheel ingear, gear shift pull bar in the axle rod other end hollow cavity is by wearing pin and retracing spring, sliding sleeve, link together with the cross wheel of speed-changing mechanism, driving the cross wheel moves along the chute that the flower groove overlaps, the flower groove puts and is fixed with and the big core wheel of asteroid wheel ingear, asteroid wheel wheel carrier end face is processed with ratchet, and the commutation ratchet that is meshed with it utilizes bearing pin to be hinged on the cover of dust support.

2, internal speed changer according to claim 1 is characterized in that gear shift tie rod end and the gear shift brake cable in the rod cavity joins.

3, internal speed changer according to claim 1, it is characterized in that in the change-speed box with the asteroid wheel ingear in the gear cover periphery be fixed with sprocket wheel, interior week also is processed with ratchet, big core wheel is hinged with very heavy with interior gear cover ratchet corresponding section.

4, internal speed changer according to claim 1, it is characterized in that in the speed-changing mechanism with major planets wheel ingear in be hinged with in the gear cover peripheral ring groove very heavyly, week and very heavy corresponding section are processed with ratchet in the axle bowl.

5, internal speed changer according to claim 1 is characterized in that in the speed-changing mechanism being hinged with in the major planets wheel wheel carrier periphery annular groove very heavy, and week and very heavy corresponding section are processed with ratchet in the axle bowl.

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