CN201235906Y

CN201235906Y - Speed change driver of bicycle

Info

Publication number: CN201235906Y
Application number: CNU2008200483191U
Authority: CN
Inventors: 黄廷华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-27
Filing date: 2008-05-27
Publication date: 2009-05-13
Anticipated expiration: 2018-05-27

Abstract

The utility model relates to a driving device for the speed variation of a bicycle, which comprises a case body. A main shaft seat and an auxiliary shaft seat are arranged in the case body, a main shaft is arranged on the main shaft seat through a bearing sheath, both ends of the main shaft extend out of the case body, and pedals are respectively arranged on both ends of the main shaft. Furthermore, one end of the main shaft inside the case body is provided with a driving gear, the other end of the main shaft is sleeved with a shaft sleeve, the inner end of the shaft sleeve is provided with a multi-stage power output gear, the shaft sleeve is arranged in the main shaft seat of the case body through a bearing sleeve, and the outer end of the shaft sleeve is provided with a flange which is provided with a chain wheel through a screw bolt. Besides, an auxiliary shaft is arranged in the auxiliary shaft seat of the case body through a bearing sleeve, a driven gear which is meshed with the driving gear of the main shaft is arranged on one end of the auxiliary shaft, a key slot is arranged on the other end of the auxiliary shaft, and a key sleeve is sleeved on the key slot and respectively provided with a multi-stage speed variation gear. The utility model has the advantages of reasonable structure, compact connection and labor conservation, and is suitable for being used on a bicycle and a manpower tricycle.

Description

The bicycle shift actuator

[technical field]

The utility model relates to a kind of bicycle device, relates in particular to the bicycle shift actuator that a kind of bicycle driving device and change-speed box are connected as a single entity.

[background technology]

In today of traffic prosperity, bicycle is still a kind of energy-conserving and environment-protective, light and handy practical walking-replacing tool and short-haul vehicle, even still produce and use in current developed country.Because the single speed bicycle speed of a motor vehicle is limited, when meeting the bigger road of the gradient, will get off walking go-cart walking of rider, therefore can not satisfy people change speed in different road conditions hope and requirement, so produced the bicycle of variable-ratio, general variable-ratio bicycle has two kinds: a kind of transmission system is located in the hind axle, its shortcoming is the accurate complicated rapid wear of structure and is difficult to maintenance, so be difficult to promote the use of; Another kind is exactly existing common sprocket wheel speed change, and load is used but its torsion is sunk beneath one's burden, and is particularly useful on the manual tricycle.

[utility model content]

In order to overcome the above-mentioned shortcoming of prior art, the utility model provides a kind of synthetic change-speed box of big or small gear cluster that is equipped with in bicycle driving device, and can be according to bicycle load and walking road conditions conversion moving velocity at any time by the speed change backguy that is arranged on the handgrip, not only saved time but also labour-saving bicycle shift actuator.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of bicycle shift actuator, comprise casing, in casing, be provided with spindle drum and countershaft seat, on described spindle drum, main shaft is housed by bearing carrier ring, extend outside the casing at these main shaft two ends, is equipped with foot-operated respectively at these main shaft two ends; End at above-mentioned casing inner main axis is equipped with driving gear, be set with axle sleeve at the main shaft other end, be provided with multistage power output gear in axle sleeve the inner, this axle sleeve is contained in the spindle drum of above-mentioned casing by bearing carrier ring, described axle sleeve outer end is provided with flange, this flange is equipped with sprocket wheel by bolt, in the countershaft seat of above-mentioned casing, countershaft is housed by bearing carrier ring, be provided with ring gear at countershaft one end, the driving gear engagement of this ring gear and above-mentioned main shaft, this has keyway at the countershaft other end, is set with the key cover on this keyway, puts at this key and is respectively equipped with step-by-step variable gear.

Case lid is equipped with on described casing top, in case lid, be provided with axis hole and filler plug, in described axis hole, be set with rotating shaft, rocking arm is equipped with in the outer end of this rotating shaft, in rotating shaft the inner connecting rod is housed, in this connecting rod, is provided with chute, link by this chute and shift fork, this shift fork is sleeved on the declutch shift shaft, and the logical bearing of this fork axle links to each other with the case lid inner face.

Described driving gear and ring gear are combination or two planetary combinations of variable-ratio of two fixed gear wheels.

The number of described power output gear equates with the variable gear number.

Between described shift fork and declutch shift shaft registration device is housed.

Described rocking arm links by steel wire backguy and the gearshift that is contained on the handle.

The beneficial effects of the utility model are: on bicycle or manual tricycle, speed change driver are installed, can selected corresponding gear to travel according to road conditions or load carrying ability, and not only laborsaving but also can improve bicycle walking speed; Thereby alleviate rider's physical demands; Because change-speed box and actuating device fuse, make complete vehicle structure firmly compact more, the utlity model has rational in infrastructure, connect compact, use labour-saving advantage, not only environmental protection but also energy-conservation is suitable for using on bicycle and the manual tricycle.

[description of drawings]

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

Among the figure: 1-casing, 2-case lid, 3-spindle drum, 4-countershaft seat, 5-main shaft, the 6-countershaft, the 7-driving gear, 8-is foot-operated, 9-output gear, 10-axle sleeve, the 11-flange, 12-sprocket wheel, 13-ring gear, 14-keyway, 15-key cover, 16-variable gear, 17-axis hole, 18-rotating shaft, the 19-rocking arm, 20-connecting rod, 21-chute, 22-shift fork, the 23-declutch shift shaft, 24-bearing, 25-filler plug, 26-registration device.

[specific embodiment]

Below in conjunction with drawings and Examples the utility model is further specified:

Referring to Fig. 1, a kind of bicycle shift actuator comprises casing 1, is provided with spindle drum 3 and countershaft seat 4 in casing 1, by bearing carrier ring main shaft 5 is housed on spindle drum 3, and extend outside the casing 1 at these main shaft 5 two ends, is equipped with foot-operated 8 respectively at main shaft 5 two ends; On main shaft 5 one ends in casing 1 driving gear 7 is housed, the other end is set with axle sleeve 10, on this axle sleeve 10, be provided with multistage power output gear 9, this axle sleeve 10 is contained in the spindle drum 3 of casing 1 by bearing carrier ring, be provided with flange 11 in axle sleeve 10 outer ends, this flange 11 is equipped with sprocket wheel 12 by bolt, in the countershaft seat 4 of above-mentioned casing 1, countershaft 6 is housed by bearing carrier ring, be provided with ring gear 13 at countershaft 6 one ends, this ring gear 13 and above-mentioned driving gear 7 engagements, and this ring gear 13 is combination or two planetary combinations of two fixed gear wheels with driving gear 7; Be provided with keyway 14 at countershaft 6 other ends, be set with key cover 15 on this keyway 14, be respectively equipped with step-by-step variable gear 16 on this key cover 15, variable gear 16 progression equate with the progression of power output gear 9.On casing 1 top case lid 2 is housed, in case lid 2, be provided with axis hole 17 and filler plug 25, in this axis hole 17, be set with rotating shaft 18, in the outer end of rotating shaft 18 rocking arm 19 is housed, this rocking arm 19 links by steel wire backguy and the gearshift that is contained on the handle, in rotating shaft 18 the inners connecting rod 20 is housed, connecting rod 20 is provided with chute 21, link with shift fork 22 by this chute 21, this shift fork 22 is sleeved on the

declutch shift shaft

23,23 of shift fork 22 and declutch shift shafts are equipped with registration device 26, and this fork axle 23 is sleeved in the bearing 24 of case lid 2 inner faces.On bicycle or manual tricycle, speed change driver is installed, has been changed that the single speed bicycle speed of a motor vehicle was limited in the past, meet the gradient when big, will the get off problem of walking go-cart walking of cyclist; And can also satisfy hope and the requirement of people in different road conditions change speed, and can select corresponding gear to travel according to road conditions or load carrying ability, not only laborsaving but also can improve bicycle walking speed; Thereby alleviate rider's physical demands.Because change-speed box and actuating device fuse, make complete vehicle structure firmly compact more, overcome the defective of complex structure rapid wear and difficult maintenance.The utlity model has rational in infrastructure, connect compact, use laborsaving not only environmental protection but also energy-conservation, be suitable for using on bicycle and the manual tricycle.

Claims

1, a kind of bicycle shift actuator comprises casing, it is characterized in that: be provided with spindle drum and countershaft seat in casing, by bearing carrier ring main shaft be housed on described spindle drum, extend outside the casing at these main shaft two ends, is equipped with foot-operated respectively at these main shaft two ends; End at above-mentioned casing inner main axis is equipped with driving gear, be set with axle sleeve at the main shaft other end, be provided with multistage power output gear in axle sleeve the inner, this axle sleeve is contained in the spindle drum of above-mentioned casing by bearing carrier ring, described axle sleeve outer end is provided with flange, this flange is equipped with sprocket wheel by bolt, in the countershaft seat of above-mentioned casing, countershaft is housed by bearing carrier ring, be provided with ring gear at countershaft one end, the driving gear engagement of this ring gear and above-mentioned main shaft, this has keyway at the countershaft other end, is set with the key cover on this keyway, puts at this key and is respectively equipped with step-by-step variable gear.

2, bicycle shift actuator as claimed in claim 1, it is characterized in that: case lid is equipped with on described casing top, in case lid, be provided with axis hole and filler plug, be set with rotating shaft in described axis hole, rocking arm is equipped with in the outer end of this rotating shaft, in rotating shaft the inner connecting rod is housed, in this connecting rod, be provided with chute, link by this chute and shift fork, this shift fork is sleeved on the declutch shift shaft, and the logical bearing of this fork axle links to each other with the case lid inner face.

3, bicycle shift actuator as claimed in claim 1 is characterized in that: described driving gear and ring gear are combination or two planetary combinations of variable-ratio of two fixed gear wheels.

4, bicycle shift actuator as claimed in claim 1 is characterized in that: the number of described power output gear equates with the variable gear number.

5, bicycle shift actuator as claimed in claim 2 is characterized in that: between described shift fork and declutch shift shaft registration device is housed.

6, bicycle shift actuator as claimed in claim 2 is characterized in that: described rocking arm links by steel wire backguy and the gearshift that is contained on the handle.