CN87211284U - Reciprocating infinitely speed-change mechanism - Google Patents

Abstract

The utility model relates to a reciprocating infinitely speed-change mechanism which is novel structure, simple and convenient installation, agility speed changing and convenient operation. The reciprocating infinitely speed-change mechanism comprises a speed regulating trigger, an infinite speed governor, a reverser, a mono-directional overrun clutch an a chain receiving wheel. The reciprocating infinitely speed-change mechanism is characterized in that the crank circumferential drive of the conventional bicycle is changed into the reciprocating type upward and downward movement. The speed adjusted can be between the speed ratio 1; 1.56 to the speed ratio 1; 3.2 optionally. The reciprocating infinitely speed-change mechanism is suitable for the bicycle, the vehicles for the disabled people, the pleasure boat on the water, the tricycle, and can be applied to the foot pedal vehicle, the hand driven vehicle and ordinary devices. The laden bicycle running in the countryside and the mountain area, adopted with the reciprocating infinitely speed-change mechanism, can save labour in the condition of loading with a slow speed and in the process of up slope, and can be as quickly as a racing bicycle in the condition of unloading.

Description

Reciprocating infinitely speed-change mechanism

The utility model relates to a kind of modern design, structure uniqueness, the small and exquisite reciprocating type continuously variable unit of volume, be widely used in bicycle, three-wheel vehicle, foot-operated pleasure-boat waterborne, especially to invalid aid chair's car, travel in the rural area, the bicycle in mountain area more has synergistic effect, also can be applied to such as foot-operated, the vehicle of driven by shaking and a kind of small-sized machine driving device on the general industry equipment.

Waterborne foot-operated pleasure-boat at present common bicycle or cargo transport three-wheel vehicle and the park is the motion of circumference crank-type, it produces power only between 120 °～140 ° of preceding semicircle, about 20 ° is the dead point in addition, can not utilize the power of pedaling fully, especially in travelling at a distance, more can make the people feel the tired leg acid of power, driving painstakingly.In three what fly the derailleur deficiency is that loading and unloading the time will all be pulled down trailing wheel and steel wire vertically hung scroll, very inconvenient, speed change is careless during use, part damages easily, easy break-down is repaired also difficulty, speed change seldom has only third gear.Be used for five of racing car and fly ten fast cars, less-than-ideal is often not to be on the same straight line because of chain and flywheel, the one, and the chain that when speed change, easily comes off, the 2nd, chain is subjected to the influence of side direction torsion, Qu Li, and damage parts is fast, and the 3rd, the combination mechanism complexity.Another kind of " world inventions " 1986 the 4th phases deliver " 15 grades of simple bicycle speed-varying units, the number of meshes of chain and tooth are jumped tooth very little easily when being subjected to big load, part has wearing and tearing just to be difficult for speed governing to locate slightly.Three kinds of its common weakness of device recited above are all can not be applicable on the bicycle that is installed in load-carrying to use, and more are unwell on the bicycle that travels in vast rural area, mountain area and generally promote.

The purpose of this utility model is for improving above-mentioned deficiency, having designed a kind of traditional crank circumference of bicycle of reforming drives, be reciprocating type foot-operated up and down continuously variable unit, structurally adopted the reverser of four connecting rod forms, and V-shape base connection form reaches the power performance that left and right sides pedal stroke alternately scrunches, 20 ° of dead angles that scope is interior about having avoided between 120 °～140 °.Aspect governor, make the clutch of speed disk and V-shape base by the speed governing trigger, with the speed governing locating dowel pin on the top link, can at random be fixed in the involute inclined-plane curve slotted eye of speed disk, fixedly the variation controlled in the speed ratio 1:1.56 to 1:3.2 of the size at θ angle obtains modulation speed on demand then.Aspect power output, adopted by the mono-directional overrun clutch structure of driven wheel transmission up and down, and, guaranteed that chain does not come off in speed-change process, and effectively power is delivered on the output chain gear by receiving sprocket wheel flexible by spring.This device is the close mechanism of envelope, and it is convenient and simple to be installed on bicycle or three-wheel vehicle, and operation is light and handy, flexibly.

The utility model is partly formed reciprocating type continuously variable unit by speed governing trigger, stepless speed adjusting gear, mono-directional overrun clutch, receipts sprocket wheel and reverser five.The speed governing trigger is selected for use and three is flown trigger in existing, only with one, two, to make one respectively into be reduction gear to third gear, the 2nd, the constant speed shelves, the 3rd, the speedup shelves connect speed control pawl and speed disk clutch by flexible cord.Stepless speed adjusting gear by with the V-shape base of the fixing assembling of imput shaft, and with the pumping arm action of V-shape base bonded assembly, driven wheel, speed disk are formed up and down.Reverser by with the fixing assembling of imput shaft go up the joint arm, and with last joint arm bonded assembly push rod, control fork, form by the following joint arm and the pull bar of captiveing joint in addition with left pedal stroke.Mono-directional overrun clutch is made up of output shaft, about mono-directional overrun clutch and output chain gear.Receiving sprocket wheel is made up of receipts chain arm, spring, sprocket wheel respectively.This device with have the change-speed box installed on the bicycle now relatively, be characterized in: modern design, the circumference crank-type motion that traditional pedal is done is changed into to step on simply up and down and is pedaled motion, only obtains higher power with less power; It two is structure uniquenesses, and volume is small and exquisite, and the sealed monolithic device can just adjust slightly on common vehicle frame and can install and use, and it is also very convenient to load and unload; It three is to make easy to processly, and special-less process only has 1/3rd part only to need car system, punching press get final product with the common metal material, and 2/3rds part adopts and has commercial gauge member now, and this installation cost hangs down and is about about 65 yuan; Its four speed ratio Wheel-chair people between 1:1.56 to 1:3.2 can control arbitrarily about the pedal stroke, with regard to the convertible different speed of a motor vehicle; It five is easy and simple to handle, and three fly trigger and connect inclined-plane speed disks in the toric transmission in the utilization of controller speed governing trigger, rise and regulate a constant speed to needed gear, and can not take off situations such as chain blocks; It six is that load-carrying is not painstaking by bike, goes up a slope that it is not hard to pass a bridge, and the bicycle that travels in rural area, mountain area is loaded onto this device, more can show its function, especially as the bicycle of transportation means, can reach the effect of getting twice the result with half the effort.

Description of drawings is as follows:

Fig. 1 represents reciprocating type continuously variable unit scheme of installation.

Fig. 2 represents reciprocating type toric transmission structural plan figure.

Fig. 3 represents the A-A view.

Fig. 4 represents the B-B view.

The 1-vehicle frame, 2-speed governing trigger, 3-flexible cord, 4-flywheel, the 5-discharging chain, 6-chain, the right pedal stroke of 7-, 8-left side pedal stroke, the 9-case, framework in the 10-, 11-speed disk, 12-speed governing locating dowel pin, 13-reverser casing, the last joint of 14-arm, 15-is the joint arm down, 16-push rod, 17-pull bar, 18-controls fork, 19-bearing, 20-spindle tube, 21-speed control pawl, 22-are decided down chain rivet, and 23-is last to decide chain rivet, driven wheel under the 24-, 25-minor axis, driven wheel under the 26-, 27-V shape seat, 28-imput shaft, the last driven wheel of 29-, the 30-minor axis, the last driven wheel of 31-, 32-outside frame, the 33-output shaft, the outer mono-directional overrun clutch of 34-, mono-directional overrun clutch in the 35-, the 36-output chain gear, 37-top link, 38-connecting pin, the 39-pivot pin, swing arm under the 40-, 41-spring, 42-receives chain arm, and 43-receives sprocket wheel, 44-bearing.

Enforcement of the present utility model is now incited somebody to action in conjunction with the accompanying drawings, and 1,2,3,4 diagrams are further described below: first, earlier speed governing trigger 2 is pulled one grade (reduction gear) or third gear (speedup shelves), but in the local teeth groove on speed disk 11 circumference of flexible cord 3 manipulation speed control pawls 21 and V-shape base 27 clutches, speed disk 11 is not rotated with V-shape base 27.Second steps the right pedal stroke 7 of captiveing joint with imput shaft 28 by right crus of diaphragm drives stepless speed adjusting gear, drive V-shape base 27 by imput shaft 28, and with V-shape base 27 bonded assembly top links 37 and following swing arms 40, the motion that makes the last driven wheel 29,31 that is wound with chain 6 and following driven wheel 24,26 works open or shrink.The θ angle also becomes big synchronously or diminishes thereupon, being provided with 12 of speed governing locating dowel pins simultaneously in the middle of the top link 37 moves in the involute inclined-plane of speed disk 11 slotted eye, speed governing locating dowel pin 12 moves inwards when being one grade, the θ angle just diminishes, speed governing locating dowel pin 12 outwards moves during third gear, the θ angle just increases, and speed at this moment and speed ratio also just and then change.When you think the desirable speed of a motor vehicle, speed governing trigger 2 can be pulled second gear (constant speed shelves), speed control pawl 21 promptly leaves teeth groove, at this moment speed disk 11 moves with V-shape base, because the inclined-plane contact (bevel angle be 6 °～10 °) of speed governing locating dowel pin 12 in the curve slotted eye is because lift angle less than friction angle, has then produced the effect of inclined-plane self-marketing, speed governing rationed marketing 12 is fixed in the slotted eye motionless, guarantees that the θ angle of 37,40 of pumping arm action is constant.The 3rd, left foot steps the left pedal stroke 8 with imput shaft 28 running-fits, drive pull bars 17 by the following joint arm 15 that is fixed together with left pedal stroke 8, and by control stalk 18 interlock push rods 16 with connect with what imput shaft 28 was rotated and go up joint arm 14, form and come and go movable reverser.Left and right sides pedal stroke 7,8 scrunches up and down again and again and drives chain 6 like this.The 4th, drive about mono- directional overrun clutch 35,34 again by chain 6, through the guiding of receiving sprocket wheel 43 outer mono-directional overrun clutch 34 cws are changeed, in mono-directional overrun clutch 35 do conter clockwise running, output shaft 33 and output chain gear 36 are rotated together, promptly bicycle is driven and advance by the 5 running flywheels 4 of the discharging chain on the output chain gear 36.Receive sprocket wheel 43 and not only play the guiding role, and, make chain 6 remain tension, guarantee that chain 6 does not come off in speed regulation process by receiving sprocket wheel 43 owing to receive the telescopic action of the spring 41 of chain arm 42 upper ends setting.

The utility model is owing to can control arbitrarily under steam the size of θ angle, it is more big to be the θ angle, speed is also just accelerated, otherwise speed also just slows down, thereby reach reciprocating type infinitely variable speeds, the cyclist is as long as just can obtain higher power with littler power, by bike as if walk with jog the same, especially the people is not easy to feel fatigue in the travelling of long distance, be in particular vast rural area, the vehicles had both been made in the mountain area, when the bicycle of production and transport instrument, provided a kind of small investment again, it is high to benefit, simple installation, use reliably, easy to operate stepless speed change device, its another characteristics are: it is not painstaking to bear a heavy burden at a slow speed, fast can with the racing car ratio, up-hill journey feels relief not hard especially.

Claims (2)

1, the reciprocating type continuously variable unit of a kind of manually driven, constitute by speed governing trigger, flywheel, chain, speed disk, push rod, imput shaft, spring, receipts sprocket wheel, output chain gear and mono-directional overrun clutch, it is characterized in that partly forming one by speed governing trigger, stepless speed adjusting gear, reverser, mono-directional overrun clutch and receipts sprocket wheel five:

A) speed governing trigger 2 is handled the clutch of speed control pawls 21 and speed disk 11 by flexible cord 3, speed disk 11 is moved together with V-shape base 27 or divides open shop.

B) stepless speed adjusting gear drives V-shape base 27 by right pedal stroke 7 by imput shaft 28, and the motion that makes the last driven wheel 29,31 that is wound with chain 6 and following driven wheel 24,26 works open or shrink with V-shape base 27 bonded assembly top links 37 and following swing arm 40, the Q angle also becomes big synchronously or diminishes thereupon, is that top link 37 middle 12 of the speed governing locating dowel pins that are equipped with move in the involute inclined-plane of speed disk 11 slotted eye simultaneously;

C) reverser drives pull bar 17 by the following joint arm 15 that is installed on the left pedal stroke 8, and the joint arm 14 of going up that rotates with imput shaft 28 by control stalk 18 interlock push rods 16 and connection forms round movable reverser.

D) mono-directional overrun clutch drives about mono-directional overrun clutch 35,34 by chain 6, make outer mono-directional overrun clutch 34 cws commentaries on classics, lining mono-directional overrun clutch 35 do the conter clockwise commentaries on classics through the guiding of receiving sprocket wheel 43, so just make the discharging chain 5 transportation flywheels 4 on output shaft 33 and the output chain gear 36;

E) receive sprocket wheel 43 and moved by the guidance force effect of chain 6,, make chain 6 remain tension, guarantee that chain 6 does not come off in speed regulation process by receiving sprocket wheel 43 by the extension or the contraction of the spring 41 of receiving the setting of chain arm 42 upper ends.

2, device according to claim 1 is characterized in that being loaded on the speed disk 11 on the V word seat 27, has involute inclined-plane slotted eye on the card, and bevel angle is 6 °～10 °, and has the teeth groove that coincide with speed control pawl 21 at the local place of card circumference.

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