CN2405859Y

CN2405859Y - Driving device for bicycle

Info

Publication number: CN2405859Y
Application number: CN99246458U
Authority: CN
Inventors: 林荣德
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-23
Filing date: 1999-11-23
Publication date: 2000-11-15
Anticipated expiration: 2009-11-23

Abstract

The utility model relates to a driving device for bicycles, which comprises a front chain wheel group penetrated by a pedal driven shaft; the front chain wheel group is pivoted at the lower part of a frame seat tube; a rear chain wheel group is assembled on an axis of a rear wheel; a chain is connected between the front and the rear chain wheel groups, wherein, the front chain wheel group which is combined on a pivot sleeve with an inner ring ratchet by a chain wheel, is matched with a driving component provided with a pivot sleeve to arrange on a pedal crank to form a one-way driving device; the driving member is provided with a pawl; the bicycle can be connected with a power device at the front chain wheel to form a power bicycle; the bicycle is forced to be simultaneously connected with a power device and a speed change device in the driving device.

Description

The bicycle driving device

The utility model relates to a kind of bicycle, refers to a kind of bicycle driving device that supplies the bicycle or the bicycle of pulling together to connect engine installation and transmission system simultaneously especially.

The driving device of tradition bicycle is the design that drives sprocket wheel behind the rear wheel axle center with a preceding sprocket wheel through chain, because of sprocket wheel before single and back sprocket wheel revolution are a fixing ratio, make bicycle adjust the speed of a motor vehicle according to road conditions, and cause the user when car, extremely to require great effort, so someone develops a kind of driving device of variable-ratio, this variable transmission mainly is with the back chain wheel set that several coaxial numbers of teeth do not wait of arranging in pairs or groups of sprocket wheel before, be connected to sprocket wheel behind the chain conversion bonded assembly of back chain wheel set via preceding sprocket wheel, reach the purpose of speed change with the ratio of number of teeth of sprocket wheel before and after changing.

The bigger convenience of tool when above-mentioned variable-ratio bicycle provides people by bike, and in recent years, there is people's development and Design to go out a kind of electrification again or fuel oil is the mini-motorcycle of the energy, so that people's one tool more traffic or the leisure apparatus of convenience to be provided, it mainly is to install an electro-motor at sprocket wheel place, nearly back, the rear of vehicle frame, rides but make people's working power driving or manpower step on to step on.But, the electro-motor of above-mentioned electric bicycle is to be installed in the rear wheel place, promoting bicycle via rear wheel advances, so design, electro-motor promptly can't cooperate chain wheel set transmission behind the variable-ratio, be so the back sprocket wheel only can use single sprocket wheel can not speed change state, and control the speed of a motor vehicle with the horsepower output of electric power or amount of fuel, for this reason, electric bicycle still can smooth-goingly travel on the level land, but in when climbing, because of sprocket wheel after can't conversion increases the load of electro-motor, the consequently service life that can reduce electro-motor.

Main purpose of the present utility model is to provide a kind of bicycle driving device, this driving device can connect engine installation and transmission system simultaneously, or in the transmission device of the bicycle that is applied to pull together, people had easily ride the driving device of effect by bike the time.

The technical solution of the utility model is to provide a kind of bicycle driving device, comprise: a pivot is arranged on the preceding chain wheel set of bicycle frame seat pipe below and pedal crank winding, one group of back chain wheel set that is arranged on bicycle rear wheel axle center side, and one connect before, chain between back chain wheel set, wherein, preceding chain wheel set is by the first preceding sprocket wheel, sprocket wheel before second, the pivot cover of ring ratchet and the driving link of a tool ratchet are formed in one tool, the interior ring ratchet of its pivot cover is unidirectional bevelled kenel, the driving link of ring-type is to be installed on the pedal crank, its outer ring edge is provided with one or more ratchets by the control of spring button, and sprocket wheel is to be installed in pivot with the suitable spacing of being separated by to put before the first preceding sprocket wheel and second, sprocket wheel is positioned at relatively away from the vehicle frame outside before first, sprocket wheel is positioned at the inboard before second, and be movably set in the driving link outside by the pivot cover, and match with ratchet with ring ratchet in it, sprocket wheel cooperates chain to connect the back sprocket wheel before first, and is unidirectional transmission (device).

Bicycle driving device as previously discussed, wherein, described bicycle frame can be installed the engine installation of the preceding chain wheel set of a drive, and this engine installation has a driving wheel, driving wheel then cooperates a transom to be connected with the second preceding sprocket wheel of preceding chain wheel set, and then can drive the back sprocket wheel by engine installation.

Bicycle driving device as previously discussed, wherein, described transom is a chain.

Bicycle driving device as previously discussed, wherein, described transom is the belt of tool dentation.

Bicycle driving device as previously discussed, wherein, the described back chain wheel set that is installed on the rear wheel axle, it is the chain wheel set design that single sprocket wheel constitutes.

Bicycle driving device as previously discussed, wherein, the described back chain wheel set that is installed on the rear wheel axle, the design of its chain wheel set that can not wait, be separated by successively and establish by several numbers of teeth, and before being set around with a tool variable-speed controller chain between a sprocket wheel of first sprocket wheel and the back chain wheel set in the sprocket wheel outside.

The utility model compared with the prior art advantage and good effect is very obvious.By above technical scheme as can be known, advantage of the present utility model is: the utility model is the preceding chain wheel set design that utilizes in the driving device, make the used engine installation of bicycle, can take advantage of a situation the ratchet of compression tool spring button and original place rotation to drive the back chain wheel set and to make bicycle advance by the interior ring ratchet that pivot puts setting, simultaneously can be because of ratchet and ratchet disengaging, pedal crank is not driven by sprocket wheel, so cyclist foot still can step on and put on pedal and be halted state, and need not foot is improved, and also can make bicycle connect engine installation and transmission system simultaneously, when making people by bike, has the effect of easily riding; In addition, when climbing, the cyclist can be connected to more suitable back sprocket wheel place promotion bicycle via transmission system conversion chain and advance, and can alleviate the load of engine installation.

Further specify specific structural features of the present utility model and purpose below in conjunction with accompanying drawing.

Fig. 1 is a plan sketch of the present utility model.

Fig. 2 is a sectional perspective scheme drawing of the present utility model.

Fig. 3 is the plan sketch of preceding chain wheel set in the utility model.

Fig. 4 is the cross-sectional schematic of overlooking that preceding chain wheel set combines with pedal crank in the utility model.

Fig. 5 be in the utility model before chain wheel set and another combination of pedal crank overlook cross-sectional schematic.

Fig. 6 is another embodiment state reference map of the utility model.

Fig. 7 is the utility model be applied to pull together plan sketch of bicycle.

At first see also Fig. 1,2, driving device of the present utility model includes:

Chain wheel set 10 before one, it is the chain wheel set that is hubbed at place, 40 pipes of bicycle frame, 41 belows and 421 windings of pedal 42 cranks, please cooperate and consult Fig. 3,4, sprocket wheel 11 before preceding chain wheel set 10 comprises first, sprocket wheel 12 before second, the driving link 14 of pivot the cover 13 and one tool ratchet 141 of ring ratchet 131 in one tool, the interior ring ratchet 131 of its maincenter cover 13 is unidirectional bevelled kenel, driving link 14 in the form of a ring is installed on pedal 42 cranks 421, its outer ring edge is provided with at least one ratchet 141 by 142 controls of spring button, and sprocket wheel 12 is fixedly arranged on the pivot cover 13 with the suitable spacing of being separated by before the first preceding sprocket wheel 11 and second, sprocket wheel 11 is positioned at relatively away from vehicle frame 40 outsides before first, sprocket wheel 12 is positioned at the inboard before second, and be movably set in driving link 14 outsides by pivot cover 13, and match with ratchet 141 with interior ring ratchet 131, and be the structure of unidirectional transmission, in the above-mentioned layout, 14 of pedal 42 cranks 421 and driving links can directly be spirally connected as shown in Figure 4, or establish affixed by axostylus axostyle 422 spiral shells that are mounted on 421 on two pedals, 42 cranks as shown in Figure 5;

And chain wheel set 20 after, it is the chain wheel set that is installed on the rear wheel axle, it can be single sprocket wheel or several numbers of teeth of serving as reasons do not wait, the chain wheel set design of being separated by successively and establishing, this back chain wheel set 20 can be the structure of unidirectional transmission, and with a chain 22 windings preceding chain wheel set be positioned at the outside first before sprocket wheel 11 and afterwards between a sprocket wheel of chain wheel set 20, above-mentioned chain 22 is installed variable-speed controller for cooperating this back chain wheel set of being made up of several sprocket wheels, and be the bicycle of variable-ratio, chain wheel set 10 chain wheel set 20 and bicycle is advanced after chain 22 drives before people are made via pushes pedals is as Fig. 1, shown in 2.

Please cooperate again and consult Fig. 1,2, via above driving device, it can be electrically operated engine installation 30 in bicycle frame 40 chain wheel set 10 places installing nearby, engine installation 30 has a driving wheel 31, this driving wheel cooperates a transom 32 to be connected with the second preceding sprocket wheel 12 of preceding chain wheel set 10, above-mentioned transom 32 can be chain, belt kenel as shown in Figure 6, gear or other equivalent members, chain wheel set 10 and then drive back chain wheel set 20 before engine installation 30 can be driven, and become the kenel of power bicycle, in addition, when if chain wheel set 20 is the chain wheel set of variable-ratio behind the bicycle, also can utilize the variable-speed controller on the chain 22 to switch to suitable sprocket wheel to change the speed of a motor vehicle.

Please cooperate and consult Fig. 3, utilize preceding chain wheel set 10 designs of above-mentioned unidirectional transmission, when the bicycle working power is travelled, the driving wheel 31 of engine installation 30 chain wheel set 10 and then when driving back chain wheel set 20 before directly driving with transom 32, because of ring ratchets 131 in the pivot cover 13 are taken advantage of a situation the ratchet 141 original places rotation of compression tool spring button 142 to drive back chain wheel set 20, because of interior ring ratchet 131 and ratchet 141 break away from, pedal 42 cranks 421 are not driven by sprocket wheel, so cyclist foot still can step on and put on pedal 42 and be halted state.

In addition, driving device of the present utility model also can be applicable on the Tandem Bicycle that many people ride, as shown in Figure 7, it is to make the preceding chain wheel set 10 of vehicle frame 40 each pipe 41 below be the design of unidirectional transmission, makes people when riding a car, if when having the people not trample, its pedal 42 also can not rotate because of chain 22 drives sprocket wheel, and also installing engine installation 30 on vehicle frame 40 of Tandem Bicycle, and with transom 32 connect arbitrary before chain wheel set 10, and can replace manpower to drive Tandem Bicycle with power.

Claims

1, a kind of bicycle driving device, comprise: a pivot is arranged on the preceding chain wheel set of bicycle frame seat pipe below and pedal crank winding, one group of back chain wheel set that is arranged on bicycle rear wheel axle center side, and one be connected in before, chain between back chain wheel set, it is characterized in that: preceding chain wheel set is by the first preceding sprocket wheel, sprocket wheel before second, the pivot cover of ring ratchet and the driving link of a tool ratchet are formed in one tool, the interior ring ratchet of its pivot cover is unidirectional bevelled kenel, the driving link of ring-type is to be installed on the pedal crank, its outer ring edge is provided with one or more ratchets by the control of spring button, and sprocket wheel is to be installed in pivot with the suitable spacing of being separated by to put before the first preceding sprocket wheel and second, sprocket wheel is positioned at relatively away from the vehicle frame outside before first, sprocket wheel is positioned at the inboard before second, and be movably set in the driving link outside by the pivot cover, and match with ratchet with ring ratchet in it, sprocket wheel cooperates chain to connect the back sprocket wheel before first, and is unidirectional transmission.

2, bicycle driving device according to claim 1, it is characterized in that: the engine installation of chain wheel set before described bicycle frame installing one can drive, this engine installation has a driving wheel, driving wheel then cooperates a transom to be connected with the second preceding sprocket wheel of preceding chain wheel set, and then can drive the back sprocket wheel by engine installation.

3, bicycle driving device according to claim 2 is characterized in that: described transom is a chain.

4, bicycle driving device according to claim 2 is characterized in that: described transom is the belt of tool dentation.

5, bicycle driving device according to claim 1 and 2 is characterized in that: the described back chain wheel set that is installed on the rear wheel axle, it is the chain wheel set that single sprocket wheel constitutes.

6, bicycle driving device according to claim 1 and 2, it is characterized in that: the described back chain wheel set that is installed on the rear wheel axle, the chain wheel set that it can not waited, be separated by successively and be established by several numbers of teeth, and before being set around with a tool variable-speed controller chain between a sprocket wheel of first sprocket wheel and the back chain wheel set in the sprocket wheel outside.