CN2931266Y

CN2931266Y - Reciprocating treadle infinitely variable speed folding bicycle

Info

Publication number: CN2931266Y
Application number: CNU2006200027382U
Authority: CN
Inventors: 孙立雪
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-06
Filing date: 2006-01-06
Publication date: 2007-08-08
Anticipated expiration: 2016-01-06

Abstract

Disclosed is a reciprocating-pedaling stepless-speed-changing quick-folding bicycle that can be folded or unfolded by one act in one to two seconds. The folded bicycle is small in size and convenient to carry. A reciprocating-pedaling stepless-speed-changing drive system that comprises a back shaft flywheel array, flat chains and a front chain sprocket and a stepless gear overcomes the defects that prior bicycles are low in efficiency of transmitting motion and the pedals have a top dead point and a bottom dead point. In the process of riding the bicycle, flat chains on two sides drive the left flywheel and the right flywheel to rotate oppositely, and thereby up-and-down reciprocating pedaling will make the bicycle move forwards. The pedals are small in momentum change and labor-saving, have no dead points, farthest utilize the effective force-application angle and improve efficiency by 10 to 13 percent compared with prior bicycles. In the process of riding, a speed-changing bar is toggled by hand to the direction of '+' or '-', then the motion is transmitted by a speed-changing detent, a bidirectional gear and a worm gear array to continuously change the radius of the front chain sprocket and the speed-changing bar can be stopped at any position. The utility mode is easy to operate, reliable in structure and able to continuously change speed.

Description

Back and forth scrunch the stepless change folding bicycle

Technical field

The utility model belongs to transportation class, is a kind ofly foldingly back and forth to scrunch and can realize infinite variable speed bicycle.

Background technology

Existing folding bicycle all will be done tens actions when folding or launching, and 10～20 seconds consuming time, more bothersome, the volume after folding that has was bigger, carried very just uncivilian.And now institute generally the rotation of employing scrunch the bicycle of type of drive, moment variations is big and last lower dead point arranged during driving, chain wheel chain and multistage flywheel variable-speed gear complex structure, the transmission efficiency of manpower work done is low, existing related invention and utility model patent have takes up room greatly, and what have technically when implementing has certain difficulty.For make develop perfect, attain in the standard bicycle of maturation and have breakthrough, provide a kind of laborsaving, high efficiency, easy to carry, and can infinite variable speed bicycle, design the utility model.

Summary of the invention

The technical scheme that its technical matters that solves the utility model adopts is: this cycle frame is divided into preceding half vehicle frame, later half vehicle frame two parts, be triangular structure, middle by middle folding shaft hinge joint, middle folding shaft is parallel with bicycle middle shaft, link by preceding folding shaft between vertical tube of front fork axle sleeve and preceding half vehicle frame, vertical tube of front fork axle sleeve bottom is by lower link and the hinge joint of later half vehicle frame, vertical tube of front fork divides two halves up and down, middle hinge joint, its the first half is by top rod and the hinge joint of later half vehicle frame, link by the back folding shaft between rear wheel frame upper end and the later half vehicle frame, the rear wheel frame lower end is by back stay and the hinge joint of preceding half vehicle frame, and there is the pinion of a quadrant gear and saddle standpipe lower end the rear wheel frame upper end.Before folding shaft be by two kinds of axles at a certain angle fit constitute, one is a vertical tube of front fork axle sleeve axle, it two is preceding half vehicle frame axle.The lock hook that links to each other with the handle that installs preceding half vehicle frame rear end is hooked in the lock hole of later half vehicle frame during for deployed condition at car load, makes forward and backward two halves vehicle frame be locked into a unitized frame, state as shown in Figure 1.When needs are folding, with hand one handle, lock hook is thrown off from lock hole, forward and backward two halves vehicle frame by gravity, folding shaft rotation in the edge, simultaneously, because this rotation, the last lower link that the back stay that links to each other with preceding half vehicle frame is reached link to each other with later half vehicle frame all to the third side to tractive, under this traction action, front and back wheel is drawn in, vertical tube of front fork the first half was fallen, and the quadrant gear of rear wheel frame upper end drives the miniature gears rotation of saddle standpipe lower end, and the saddle standpipe also fell, car load draws state as shown in Figure 2 in, and an action can be finished folding.When needing to launch, as long as one holds the vertical tube of front fork first half, one holds the saddle standpipe, direction one is broken off with the fingers and thumb to the left and right, and the car load each several part moves with aforementioned opposite, and is promptly deployable, when launching to put in place, the lock hook automatic lock locks car load in the lock hole of later half vehicle frame, an action can be finished expansion.Handlebar is divided into three sections of left, center, right, and the stage casing is fixed on the vertical tube of front fork, and left and right section hinge joint is at the two ends, the left and right sides in stage casing, and be collapsible.Back and forth scrunch, stepless speed change driving system is made of rear flywheel combination, flat chain, preceding sprocket wheel toric transmission.The rear flywheel composite construction is as follows: two garden shape washers about being fixed with on the rear axle, be 120 degree angles each three planetary wheel about distribution uniformly on two washers, the cooresponding planetary wheel in the left and right sides is coaxial fixing, a left side (or right) skidding star gear is less, and its medial margin is nibbled platform mutually with the external gear of a left side (or right) flywheel.Right (or left side) skidding star gear is bigger, and its lateral border is meshed with the inner gear of homonymy flywheel, and left and right sides flywheel all contacts with backshaft skin lateral border ratchet by ratchet, and backshaft skin can only be rotated to a direction, and backshaft skin connects trailing wheel by spoke.About an end of two flat chains be separately fixed at left and right sides flywheel chain in, another by about the chain of two preceding sprocket wheel toric transmission outer rims be fixed on before on the pin of sprocket wheel base plate.Preceding sprocket wheel toric transmission base plate the first half is equidistantly distributing five or six chain blades, the other end of each chain blade is half garden generating gear, link to each other with base plate by axle, the big gear wheel engagement of half garden generating gear medial margin and worm gear, the axle of the miniature gears of worm gear passes base plate, the other end of axle is being fixed driven gear, and driven gear and two-way gear mesh, two-way gear (cw or conter clockwise) rotation are forward or backwards controlled by speedup ratchet or deceleration or pawl.

The beneficial effects of the utility model are: (1) but the utility model fast folding is folding or launch each and only need an action, 1～2 time in second got final product.(2) volume after folding is little, and is easy to carry.(3) only need up and down reciprocatingly scrunch during this cycling, rather than the both feet of standard bicycle are done the mode that scrunches of garden Zhou Yundong, no dead point, moment variations is little, maximally utilise effective application of force angle, therefore raise the efficiency 10～13% than standard bicycle, laborsaving.(4) stepless shift function of simple to operate, reliable in structure.

Description of drawings

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

Fig. 1 is car load deployed condition of the present utility model (10: 1) scheme drawing (being preceding folding shaft shape scheme drawing in the circle of A garden)

Fig. 2 is folded state scheme drawing of the present utility model (amplifying for centre portion is local in the circle of B garden)

Fig. 3 is the decomposing state sectional structural map of rear flywheel combination

Fig. 4 is the decomposing state sectional structural map of preceding sprocket wheel toric transmission

In Fig. 1, Fig. 2:

(1) the preceding folding shaft of preceding half vehicle frame (2) (3) vertical tube of front fork axle sleeve (4) vertical tube of front fork hinge joint

(5) vertical tube of front fork (6) top rod (7) lower link (8) handle

(9) saddle standpipe (10) miniature gears (11) quadrant gear (12) back folding shaft

(13) the later half vehicle frame of rear flywheel combination (14) back stay (15) flat chain (16)

(17) the preceding sprocket wheel toric transmission of folding shaft (18) (19) stretcher in

In Fig. 3

(20) the fixing left flywheel of washer (21) (22) external gear (23) ball bearing of main shaft

(24) ratchet (26) spoke (27) planetary wheel of rear axle (25) backshaft skin

(28) right flywheel (29) inner gear (30) chain (31) ratchet (32) backshaft skin

In Fig. 4

(33) axis (34) deceleration ratchet (35) speedup ratchet (36) chain blade

(37) preceding sprocket wheel base plate (38) enclosing cover (39) worm gear (40) chain pin

(41) the two-way gear of driven gear (42)

The specific embodiment

In Fig. 1, preceding half vehicle frame (1) is linked by middle folding shaft (17) with later half vehicle frame (16), the other end of preceding half vehicle frame (1) spider is by preceding folding shaft (2) and vertical tube of front fork axle sleeve (3) hinge joint, vertical tube of front fork (5) rotates in vertical tube of front fork axle sleeve (3), the two halves up and down of vertical tube of front fork (5) is linked to each other by vertical tube of front fork hinge joint (4), the first half of vertical tube of front fork (5) is by top rod (6) and later half vehicle frame (16) hinge joint, vertical tube of front fork axle sleeve (3) lower end is by lower link (7) and later half vehicle frame (16) hinge joint, before folding shaft (2) shape as shown in Fig. 2-A garden circle, vertical tube of front fork axle sleeve axle and preceding half vehicle frame axle fit at a certain angle constitute, can make vertical tube of front fork when car load is deployed condition in the car load plane, when folding, vertical tube of front fork can reverse certain angle, make front vehicle wheel and the rear wheel plane of staggering, front and back wheel can be overlapped.Link by back folding shaft (12) between rear wheel frame upper end and the later half vehicle frame (16), the rear wheel frame lower end is by back stay (14) and preceding half vehicle frame (1) hinge joint, the rear wheel frame upper end has a quadrant gear (11) and the miniature gears (10) of saddle standpipe (9) lower end to mesh, the lock hook that links to each other with the handle (8) of preceding half vehicle frame rear end installation 1., when car load is deployed condition, the lock hole that is hooked in later half vehicle frame 2. in, the two halves vehicle frame is locked into a unitized frame before and after making, as shown in Figure 1.When needs are folding, with hand one handle (8), 1. lock hook throws off 2. from lock hole, forward and backward two halves vehicle frame by gravity, folding shaft (17) rotation in the edge, tractive reaches the back stay (14) that links mutually with preceding half vehicle frame (1) with the upper and lower pull bar (6) (7) that later half vehicle frame (16) links mutually simultaneously, front and back wheel is drawn in, the first half of vertical tube of front fork (5) was fallen, saddle standpipe (9) also fell owing to quadrant gear (11) drives miniature gears (10) rotation, car load draws state as shown in Figure 2 in, and an action can be finished folding.When needing to launch, need only one and hold the vertical tube of front fork first half (5), one holds saddle standpipe (9), direction one is broken off with the fingers and thumb to the left and right, and car load moves with aforementioned opposite, and is promptly deployable, after expansion puts in place, lock hook 1. automatic lock the lock hole of later half vehicle frame 2. in, the locking car load.

When pedaling left foot pedal (19) downwards, preceding sprocket wheel toric transmission (18) drives flat chain (15) and travels forward, because the other end of flat chain (15) is to be wrapped in the chain (30) of rear flywheel combination (13), thereby make left flywheel (21) anticlockwise motion, this rotates by the ratchet (25) on ratchet (31) the drive backshaft skin (32), backshaft skin (32) is rotated together, drive rear wheel by spoke and rotate forward.Simultaneously, because external gear (22) and three planetary wheels (27) inboard in the left flywheel (21) are meshed, planetary wheel (27) is clockwise rotated, and cutting up with a hay cutter edge outward, coaxial with it right side planetary wheel is meshed with the inner gear (29) of right flywheel (28), therefore, right flywheel (28) is clockwise rotated, ratchet (31) slips over the ratchet on the backshaft skin (32), the flat chain roll on right side is in the chain (30) of right flywheel (28), and right steps is raise by right front sprocket wheel toric transmission, right threading following time, rotation direction is with above-mentioned opposite, right flywheel makes trailing wheel continue to rotate forward by ratchet-ratchet-backshaft skin, and drives the rising of left foot pedal, scrunches up and down and so forth trailing wheel is ceaselessly rolled forward.The front end of the flat chain (15) of the left and right sides is fixed on the chain pin (40) by the chain (36) of preceding sprocket wheel, and the shifter bar that is positioned on the handlebar can be stirred to "+" (speedup) or "-" (deceleration) both direction.If stir to "+" speedup direction, under the tractive of steel rope, speedup ratchet (35) withstands on the two-way gear (42), because ratchet is fixed on the appropriate location of vehicle frame, make two-way gear (42) can only folk prescription to rotation, depressed when falling at stretcher (19), two-way gear (42) can not be along with rotation, promptly with respect to angle of preceding sprocket wheel base plate (37) rotation, this rotation is by driven gear (41), worm gear (39) is delivered on the half garden generating gear of five chain blades (36), and five chain blades are opened, and has promptly increased preceding sprocket radius, reach the speedup purpose, decontrol shifter bar, ratchet (35) no longer heads on two-way gear (42), and speed-change process stops, because the chain blade can be parked in the optional position, thereby continuously change preceding sprocket radius, thus can stepless change, when shifter bar being dialled when "-", speed-change process can slow down continuously with above-mentioned opposite.Handlebar is divided into three sections of left, center, right, and the stage casing is fixed on the vertical tube of front fork, and vertical with vertical tube of front fork, and left and right section hinge joint is at the two ends, the left and right sides in stage casing, and be collapsible.

Claims

1. one kind is made up by rear flywheel, the flat chain, what preceding sprocket wheel toric transmission constituted back and forth scrunches, stepless speed change driving system reaches by preceding half vehicle frame, later half vehicle frame, preceding folding shaft, middle folding shaft, back folding shaft, top rod, lower link, what the folding system that back stay constitutes was formed back and forth scrunches, stepless change, the fast folding bicycle, it is characterized in that: folding mode is that preceding half vehicle frame and later half vehicle frame serve as that axle rotates with middle folding shaft, folding in the plane at the place of bicycle own, front and back wheel is drawn in when folding, vertical tube of front fork, the saddle standpipe all fell simultaneously, car load draws into a cuboid in, the left flywheel of rear flywheel combination, right flywheel is because in its rear axle intracutaneous both sides planetary, outer both sides respectively with about the inner gear of two flywheels, external gear is meshed and opposite spin, i.e. right flywheel left-hand revolution when left flywheel clickwise, vice versa, ratchet about this moment of rotation is passed through in two flywheels, the unidirectional backshaft skin that is delivered to of the ratchet of backshaft skin outer rim, backshaft skin can only be rotated to a direction, several foliated lamellar chains in the preceding sprocket wheel are at the speed change ratchet, two-way gear, driven gear, under the moment of rotation effect that worm gear is transmitted, can freely open, close up, and can be parked in the optional position, and continuously change preceding sprocket radius, thereby be connected with the flat chain between the realization stepless change, rear flywheel combination and preceding sprocket wheel.

2. the stepless change folding bicycle that back and forth scrunches according to claim 1, it is characterized in that: be leg-of-mutton preceding half vehicle frame and later half car and between by the hinge joint of middle folding shaft, middle folding shaft is parallel with bicycle middle shaft, another drift angle of vertical tube of front fork axle sleeve and preceding half vehicle frame is linked by preceding folding shaft, another drift angle of later half vehicle frame and rear wheel frame upper end are by back folding shaft hinge joint, and top rod arranged, lower link one end respectively with the vertical tube of front fork axle sleeve, the hinge joint of the vertical tube of front fork first half, the other end links with later half vehicle frame respectively, the rear wheel frame lower end is by back stay and the hinge joint of preceding half vehicle frame, there is the pinion of a quadrant gear and saddle standpipe lower end the rear wheel frame upper end, the third angle of preceding half vehicle frame is equipped with handle, handle is connected with lock hook, and there is lock hole the third angle end face of later half vehicle frame and the corresponding position of lock hook.

3. the stepless change folding bicycle that back and forth scrunches according to claim 1, it is characterized in that: two garden shape washers about being fixed with on the rear axle, be 120 degree angles each three planetary wheel about distribution uniformly in two washer outsides, two planetary wheels are coaxial fixing about corresponding, one skidding star gear is less, its medial margin, promptly be meshed with the external gear of homonymy flywheel near rear axle one lateral margin, the opposite side planetary wheel is bigger, its lateral border, promptly the lateral border away from rear axle is meshed with the inner gear of homonymy flywheel, and left and right sides flywheel all contacts with backshaft skin lateral border ratchet by ratchet.

4. the stepless change folding bicycle that back and forth scrunches according to claim 1, it is characterized in that: the shape of preceding folding shaft be by vertical tube of front fork axle sleeve axle and preceding half vehicle frame axle at a certain angle fit constitute, can make vertical tube of front fork edge and the perpendicular direction deflection in plane, car load place certain angle in the car load folding process.

5. the stepless change folding bicycle that back and forth scrunches according to claim 1, it is characterized in that: be connected by the flat chain between the combination of preceding sprocket wheel toric transmission and rear flywheel, before the one end is fixed on the pin of sprocket wheel toric transmission base plate, be fixed on the pin of rear flywheel combination after in the chain of the other end through being wrapped in the rear flywheel combination.

6. the stepless change folding bicycle that back and forth scrunches according to claim 1, it is characterized in that: on this bicycle middle shaft by two preceding sprocket wheel toric transmissions about being equipped with, the first half of the base plate of sprocket wheel toric transmission is equidistantly distributing five or six chain blades before each, the inboard end of each chain blade is half garden generating gear, link to each other with base plate by axle, the big gear wheel engagement of half garden generating gear medial margin and worm gear, the axle of the miniature gears of worm gear passes base plate and is fixed with driven gear, driven gear and two-way gear mesh, two-way gear is coaxial with the base plate axle, two-way gear lateral border opposite position has the speedup ratchet, the deceleration ratchet, these two ratchets link to each other with shifter bar by the steel fly.

7. the stepless change folding bicycle that back and forth scrunches according to claim 1 is characterized in that: when being installed on the axis, the rear flywheel combination claims the axis flywheel, and its left and right sides flywheel connecting pin treadle, foot-driven lever is by stretcher is housed.

8. the stepless change folding bicycle that back and forth scrunches according to claim 1 is characterized in that: by back and forth scrunching of constituting of rear flywheel combination, flat chain, preceding sprocket wheel toric transmission, stepless speed change driving system can be separately or integral installation non-collapsible, be on the standard bicycle.

9. the stepless change folding bicycle that back and forth scrunches according to claim 1, it is characterized in that: can separate with preceding sprocket wheel when toric transmission independently uses, be arranged separately in later half vehicle frame appropriate location, a plurality of chain blades are installed on the toric transmission base plate ringwise.