CN2272405Y

CN2272405Y - Foldable chainless bicycle

Info

Publication number: CN2272405Y
Application number: CN 96201285
Authority: CN
Inventors: 王祯; 王慧奇
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-10
Filing date: 1996-01-10
Publication date: 1998-01-14
Anticipated expiration: 2006-01-10

Abstract

The utility model provides a folding chainless bicycle, which is improved on the basis of the original bicycle driven by a chain. The utility model is characterized in that the utility model is driven by a gear arranged on a housing of a wheel shaft; when one person rides the utility model, the gear only drives a front wheel; when two persons ride the utility model, both the front wheel and a back wheel are driven; the utility model can be folded forwards and backwards by taking a tubular upright rod of a bicycle frame of the utility model as a shaft; after folded, the utility model is very convenient to carry and store, and the utility model changes the convention that all bicycles are driven by chains.

Description

Collapsible Chainless bicycle

The utility model provides a kind of folding Chainless bicycle, is improved on the basis of former chain gear bicycle.

Existing bicycle is chain gear, drives hinge wheel by the foot-operated pedal of cyclist during work and rotates, and hinge wheel drives minor sprocket by chain and the trailing wheel axle housing rotates, thereby reaches the purpose of wheel walking.But this frame is long, weight is big, and stair activity is moved difficulty, and it is big to take up room when depositing, and efficient is low, the sprocket wheel quick abrasion, and chain is stressed big, slot easily takes place, take off the chain phenomenon, and can only single driving is single ride.

The purpose of this utility model is to overcome the above-mentioned weak point of prior art, and provide a kind of by gear transmission, and the single driving front-wheel of riding, the double front and back wheel of riding all drives, and the collapsible Chainless bicycle that lifts after collapsible and deposit, thereby changed the tradition that bicycle is chain gear.

This gear system that includes, folding vehicle frame, the collapsible Chainless bicycle of wheel and accessory device, on its front-wheel axle housing or during double riding on the front and back wheel axle housing all by adorning by the footstep mechanism of routine and the gear transmission loading amount of internal tooth epicyclic transmission mechanism combination, the internal tooth planetary mechanism is contained in the wheel axle housing.When cyclist's pedal footstep mechanism directly drives the rotation of internal tooth planetary mechanism speedup pusher motor-car wheel axle housing by the axis of footstep mechanism, realize wheel.

The technical measures that the utility model is taked also include: folding vehicle frame by the vertical rod of plug-in type tubulose be divided into can before and after folding two halves, the front end of forebody camber beam connects with handlebar, front fork, front-wheel according to a conventional method; The rear end of camber beam connects with the tubulose vertical rod by the revolvable plug-in type tubular configured joint that welds realizes what front and back folded or stretched.Stretch the back and insert to pull with rotary list and insert two inserting and fix in pulling, pull when inserting that to rise with hand-screw just can be to fold before and after the axle with the tubular configured joint.The upper end of tubulose vertical rod is fixing vehicle seat routinely, and shaft directly welds with back vent, and the other end of back vent connects with trailing wheel routinely.Also respectively be welded with a tubular configured joint core at tubulose vertical rod shaft and back vent two ends, so that peg graft with the back mounting during double riding.

During double riding, except the wheel that trailing wheel is changed into the band gear system, mounting after also adding one in addition, back mounting is the upper end fixing back seat routinely of a tubulose short stanchion, and a forked type brace is welded in the lower end, by tubular configured joint emit with back vent on the tubular configured joint core peg graft, also be welded with a knee on the shaft, equally by tubular configured joint emit with the vertical rod of vehicle frame tubulose on the tubular configured joint core that welds peg graft, whole back mounting and the latter half of of vehicle frame combine as a whole, and do not influence before and after the vehicle frame folding.

Description of drawings of the present utility model is as follows:

Fig. 1: the front elevation of riding for the utility model is single.

Fig. 2: the folding scheme drawing of riding for the utility model is single.

Fig. 3: the front elevation of riding for the utility model is double.

Fig. 4: body frame structure for automotive scheme drawing.

Fig. 5-Fig. 6: be the transmission scheme drawing.

Now in conjunction with the accompanying drawings embodiment of the present utility model is described further: collapsible Chainless bicycle is mainly by gear system 1, folding vehicle frame 2, front and back wheel 3, vehicle seat 4, handlebar 5 and conventional formations such as brake gear.Gear system 1 is made up of conventional footstep mechanism 7 and internal tooth epicyclic transmission mechanism 8.Internal tooth epicyclic transmission mechanism 8 is installed in the wheel axle housing 9, routinely by dress spoke silk, its left end cap and axle housing 9 be one on the outer rim of axle housing 9, and right end cap can be rolled over dress for connecting with spiral shell button and axle housing 9, inlays a ratchet ring 17 in it.Internal tooth epicyclic transmission mechanism 8 is with sleeve form transmitted power; Internally toothed annulus 10 is fixed on the left side front fork 12 and can not rotates by the empty cover of the tubular bracelet on the axis left side axle that is enclosed within footstep mechanism 7 11 usefulness nuts, and the axis of footstep mechanism 7 directly drives planetary gear carrier 13 rotations by key or axle Xiao, at this moment planetary wheel 14 rotates at the center shaft gear 15 that drives again when internally toothed annulus 10 rotates on the axis right-hand part axle that sky is enclosed within footstep mechanism 7, be installed in the ratchet 16 on the center shaft gear 15 axle sleeve right-hand member ratchet holder, promote axle housing 9 rotations by the ratchet ring of inlaying in axle housing 9 right end caps 17, realize the purpose of wheel.The wheel revolutions direction is: because of internally toothed annulus 10 maintains static movingly, when footstep mechanism 7 drove planetary gear carriers 13 and be clickwise, planetary wheel 14 be a left-hand revolution, and center shaft gear 15 passes through ratchet 16 promotion ratchet rings 17 and axle housing 9 is pressed clickwise.When internally toothed annulus 10 maintains static movingly, the ratio of number of teeth of the number of teeth of internally toothed annulus 10 and center shaft gear 15 is 3: 1 o'clock, planetary gear carrier 13 revolutions 1 circle, and center shaft gear 15 just changes 4 circles, (speed ratio also can according to different usage condition adjustment).The number of planetary wheel 14 is generally 3.The number of teeth of each gear generally is: when the number of teeth of center shaft gear 15 was 22, the number of teeth of internally toothed annulus 10 was 66, and the number of teeth of planetary wheel 14 is 22.Because the modulus of gear is selected less than 1, so the external diameter of axle housing 9 is less than 8 centimeters.

Folding vehicle frame 2 is divided into by plug-in type tubulose vertical rod 18 can the folding two halves in front and back.The front end of forebody camber beam 19 reaches with handlebar 5 according to a conventional method and connects with front-wheel 3 by front fork 12; The tubular configured joint of the tubular configured joint core 20 of camber beam 19 rear ends weldering and the weldering of tubulose vertical rod 18 lower ends is fixed with U type Xiao axle 22 after emitting 21 grafting, can serve as that the axle front and back fold or stretch with the tubular configured joint core just.Stretching the back inserts and to pull 24 and insert two the inserting that is welded on the camber beam 19 and pull in 23 and can maintain static with being welded on rotary list in the tubulose vertical rod 18.Rotary list is inserted and to be pulled 24 is to be made of after hinged with slotting the pulling of Xiao's axle and list with holes the ears ring with holes that is welded in the tubulose vertical rod 18.The upper end of tubulose vertical rod 18 is fixing vehicle seat 4 routinely, and its shaft directly welds with the upper end of back vent 6, and two ends of back vent 6 connect with trailing wheel 3 routinely.In addition in two terminal and tubulose vertical rods 18 of back vent 6, respectively weld a tubular configured joint core 20, so that emit 21 grafting with the tubular configured joint of back mounting 27 welderings during double riding.Back mounting 27 is a fixedly vehicle seat 4 of a tubulose short stanchion upper end, lower end and centre are welded a forked type brace 28 and knee 29 respectively, all be welded with a tubular configured joint at the end of two rod members and emit 21, fix with U type Xiao with the tubular configured joint core 20 of two ends of tubulose vertical rod 18 and back vent 24 back of pegging graft respectively, whole back mounting and the latter half of of vehicle frame 2 are one, equally can be folding with forebody, also can wheel landing after folding hauls away.Except that by loading onto the mounting of back, also trailing wheel to be changed the trailing wheel of band gear system during double riding, for back seat people drive rear wheels.

Adopt advantage of the present utility model:

1, gear drive efficient height, volume is little, weight is light, gearratio is big, And changed the tradition of bicycle chain transmission.

2, vehicle body can shorten the 30-40 centimetre, and weight alleviates more than 1/3rd, Can carry after folding and go downstairs and deposit.

3, front and back wheel all can drive, and singlely, double all can ride.

4, seat adjustment is flexible, and comformability is strong, and posture or seat formula are ridden usefulness routinely.

5, cyclist's center of gravity can reduce about 20 centimeters, and safety is good, in a single day the bipod that brakes in travelling lands and stands, and can not turn over from car to fall.

6, can be as making 24 inches trundles as touring bicycle.

Claims

1, a kind of gear system 1 that includes, the collapsible Chainless bicycle of folding vehicle frame 2, it is characterized in that on the axle housing 9 of its front-wheel, the gear system of being made up of conventional footstep mechanism 7 and internal tooth planetary mechanism 81 all is installed on the front and back wheel axle housing 9 during perhaps double riding, internal tooth planetary mechanism 8 is mounted in the axle housing 9 with sleeve form transmitted power, internally toothed annulus 10 is fixed on the car fork 12 by axle sleeve and does not rotate, the axis of footstep mechanism 7 directly drives planetary gear carrier 13 and rotates, and realizes that center shaft gear 15 is by ratchet 17 on the sleeve, 16 promote axle housing 9 rotates with planetary gear carrier 13 equidirectional speedups.

2, according to claims 1 said collapsible Chainless bicycle, it is characterized in that folding vehicle frame 2 is by tubulose vertical rod 18, preceding camber beam 19, preceding rear vehicle fork, tubular configured joint emits, core and list, two inserting pulled formation, single ears ring of pulling with holes of inserting, two inserting pulled, tubular configured joint emits, core is welded in respectively on tubulose vertical rod 18 and the preceding camber beam 19, after tubulose vertical rod 18 that belt lacing is emitted and the preceding camber beam of belt lacing core 19 are pegged graft, inserting U type Xiao vehicle frame 2 can serve as that axle is folding with the joint core just, after vehicle frame 2 stretches, single slotting pulling with Xiao's axle and ears ring with holes connection back screwed in two slotting pulling, and vehicle frame 2 just maintains static.

3, according to claim 1,2 described collapsible Chainless bicycles, it is characterized in that when double the riding supportingly with it except that mounting teeth wheel transmission device 1 on trailing wheel axle housing 9, get final product after also having the joint of back mounting by forked type brace 28, camber beam 29 welderings to emit joint core grafting with vehicle frame 2 latter half of welderings.