CN2615037Y

CN2615037Y - Spring booster bicycle

Info

Publication number: CN2615037Y
Application number: CNU032168594U
Authority: CN
Inventors: 王瑞祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-24
Filing date: 2003-03-24
Publication date: 2004-05-12
Anticipated expiration: 2013-03-24

Abstract

The utility model discloses a spring power-assisted bicycle which is a bicycle with a winder (11) on a centre shaft. The winder is equipped by a flywheel (4), an elastic mainspring (10), and a ratchet (5), and the elastic mainspring is fixed to the winder. The flywheel is fixed to one end of the winder, and is connected with a drive sprocket (1) via a chain (2). The ratchet is fixed to the other end of the winder, and is meshed with a drive gear group (6). The drive gear group comprises plural gear groups, and each gear group comprises a large gear and a small gear, which are meshed and coaxially arranged. The small gear of the first gear group is a ratchet, which is meshed with the ratchet (5), and the large gear of the last group is connected with a rear flywheel (8) via a chain (7). The utility model is designed in a unique concept, which applies mechanics principle and adopts the elastic mainspring as power source. The elastic mainspring is compressed via tread of feet, and the bicycle is driven when the elastic mainspring releases potential energy. The utility model is characterized in portability, power-assistance, low price, and low cost in utilization.

Description

The spring assist bicycle

Affiliated technical field

The utility model belongs to technical field of bicycles, and what relate generally to is a kind of spring assist bicycle.

Background technology

Characteristics such as at present, the morpet of selling on the market is safe and reliable with its in-use performance, moving velocity is fast, time saving and energy saving are subjected to people's favor.Because this class boosted vehicle all is power-assisted by the electric driver realization is set, thereby there are productive costs height, complex structure, big, the power consumption height of noise, need the frequent drawback of changing storage battery.

Summary of the invention

The purpose of this utility model promptly produces thus, proposes that a kind of structure design is simple, productive costs is low, driving safety is reliable, time saving and energy saving, spring assist bicycle that operating costs is low.

For achieving the above object, the utility model is achieved through the following technical solutions: it is provided with winder above bicycle middle shaft, on this winder, be provided with flywheel, elastic spring and ratchet, elastic spring is fixed on the winder, end at winder is fixed with flywheel, and this flywheel connects with drive sprocket by chain; The other end at winder is fixed with ratchet, and this ratchet and driving gear set are connected with a joggle; Driving gear set by many that engagement is connected and every pair for two gears of size of coaxial setting constitute, wherein first pair of miniature gears that connects with ratchet engaged is ratchet, last big gear wheel to gear is connected with the bicycle rear flywheel by chain.

The utility model design is unique, and simple in structure, it utilizes mechanics principle, and the employing elastic spring is a propulsion source, by foot-operated mode elastic spring is tightened, and the process of utilizing elastic spring to discharge potential energy drives bicycle running.It is compared with ordinary bicycle, has laborsaving, light, power-assisted characteristics, compare with Moped Scooter have cheap, easy to use, pollution-free, noiselessness, characteristics that operating costs is low.

Description of drawings

Accompanying drawing 1 is the utility model structural representation.

Accompanying drawing 2 is the utility model principle schematic.

Accompanying drawing 3 is the structural representation of the utility model elastic spring.

Among the figure, 1, drive sprocket, 2, chain, 3, the clockwork spring case, 4, flywheel, 5, ratchet, 6, driving gear set, 7, chain, 8, rear flywheel, 9, trailing wheel, 10, spring, 11, winder, 12, limiting stopper.

The specific embodiment

In conjunction with the accompanying drawings, it is as follows to provide embodiment of the present utility model:

In conjunction with the accompanying drawings shown in 2, present embodiment is above existing bicycle middle shaft, and winder 11 is installed between two cant beams as accompanying drawing 1, and this winder 11 is provided with flywheel 4, elastic spring 10 and ratchet 5.Elastic spring 10 is installed in the clockwork spring case 3 (as shown in Figure 3), and one end and winder 11 are fixing, and the other end is spacing by limiting stopper 12, and all stretch out outside the clockwork spring case 3 at the two ends of winder 11.Flywheel 4 is arranged on the winder 11 of clockwork spring case 3 one sides, and it connects with the bicycle drive sprocket by chain 2.Ratchet 5 is fixed on the winder 11 of clockwork spring case 3 opposite sides, and it is connected with a joggle with the one group of driving gear set 6 that is fixed in the bicycle body.This driving gear set 6 by many that (present embodiment is 3 pairs) engagement is connected and every pair comprise two coaxial gears that are provided with of size and constitute, wherein the miniature gears that connects with ratchet 5 engagements in the first pair of gear is a ratchet, be arranged on big gear wheel and following a pair of gear mesh coaxial with it, by that analogy, last big gear wheel to gear is connected with rear flywheel 8 through chain 7.

Present embodiment is stepped on earlier bicycle pedal in use backward, and drive sprocket 1 drives chain 2 and makes flywheel 4 reversings, winder 11 drives spring 10 and tightens under the effect of flywheel 4, at this moment, be fixed on the also reversing thereupon of ratchet 5 on the winder 11, and form idle running with its ingear clavula wheel.After elastic spring 10 tightens, step bicycle pedal forward slightly, spring 10 drives ratchet 5 and rotates in the process that discharges elastic potential energy, also rotate with the driving gear set 6 that these ratchet 5 engagements connect thereupon, and drive bicycle rear 9 rotations by chain 7.

For not hindering the cruising function of existing bicycle, at drive sprocket 1 position a drive sprocket is set side by side again, this drive sprocket is connected with the flywheel that is set up in parallel on trailing wheel through chain, thereby passes through bicycle pedal forward, can drive bicycle running.

Claims

1, a kind of spring assist bicycle, it is characterized in that: above bicycle middle shaft, be provided with winder (11), this winder (11) is provided with flywheel (4), elastic spring (10) and ratchet (5), elastic spring (10) is fixed on the winder (11), end at winder (11) is fixed with flywheel (4), and this flywheel (4) connects with drive sprocket (1) by chain (2); The other end at winder (11) is fixed with ratchet (5), this ratchet (5) is connected with a joggle with driving gear set (6), driving gear set (6) by many that engagement is connected and every pair constitute for two gears of size of coaxial setting, wherein first pair of miniature gears that connects with ratchet (5) engagement is ratchet, and last big gear wheel to gear is connected with rear flywheel (8) by chain (7).

2, spring assist bicycle according to claim 1 is characterized in that: described elastic spring (10) is arranged in the clockwork spring case (3).

3, spring assist bicycle according to claim 1 is characterized in that: described driving gear set (6) is three pairs.

4, spring assist bicycle according to claim 1 is characterized in that: be set up in parallel another drive sprocket at described drive sprocket (1) position, another rear flywheel that this drive sprocket is set up in parallel on chain and rear wheel is connected.