CN1142078C

CN1142078C - Reciprocating bicycle

Info

Publication number: CN1142078C
Application number: CNB971027986A
Authority: CN
Inventors: 常殿林
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-30
Filing date: 1997-04-30
Publication date: 2004-03-17
Anticipated expiration: 2017-04-30
Also published as: CN1197744A

Abstract

The present invention relates to a reciprocating bicycle. A force driving system adopts the structure that cranks are arranged on a middle shaft by bearings, two pairs of needle bearings are arranged in a middle shaft frame, intermediate reversing gears are added between a right installation toothed ring and a left installation toothed ring, the intermediate reversing gears are positioned by a fixed sleeve which is arranged on the middle shaft frame, and the middle shaft penetrates into the toothed rings; gaps of the toothed rings are regulated by two levels of the middle shaft; a ratchet wheel pair is respectively formed by two sets of ratchet pawls arranged on the middle shaft and inner ratchets arranged on inner rings of the right toothed ring and the left toothed ring; a left crank and a right crank which are provided with bearings are arranged at both ends of the middle shaft; the cranks are locked with the toothed rings by a fixed pin. The reciprocating bicycle has the advantages of labor saving for driving, high efficiency and high running speed, and can be used as a body-building apparatus and an ideal walking substitution appliance.

Description

A kind of reciprocating bicycle

The present invention relates to a kind of bicycle, specifically the rider a kind of wheeled bicycle of powered vehicle (bicycle for example, three-wheel vehicle, wheel Wheel-chair) motion of reciprocally exerting pressure.

Is the wheel car of propulsive effort with rider by moving with hand or pin, the most commonly as bicycle, three-wheel vehicle or wheel Wheel-chair etc.This class car is rely on to drive crank (pedal or handle) to drive sprocket rotation, and by chain power is passed to wheel and make its motion, and for example, the stretcher of stepping on bicycle advances bicycle.But making circumference at crank rotates, it is effective force application movement that crank has only half cycle, and half cycle is to prepare and recovery application of force process in addition, simultaneously in actv. half cycle force application movement, also have only when crank turn to and 30～150 ° of crank extreme higher positions between bigger moment is just arranged, promptly real effective exercise only accounts for about 1/3 one week of crank motion.Therefore, the various manpower wheel cars that adopt compare painstakingly in motion at present, and particularly difficulty is just bigger when going up a slope or advancing against the wind.For overcoming the deficiency of this traditional bicycle, the present inventor once designed a kind of reciprocating double ratchet vehicle (the ZL patent No. 90106437.8).The universal wheel car, bicycle for example, power drive system is to be fixed with sprocket wheel and a pair of crank on axis, the relative antisymmetry of two cranks is installed in the axis two ends, the crank other end is equipped with executes power-assisted stretcher, flywheel is installed on the rear axle, and sprocket wheel and flywheel constitute power drive system by the chain transferring power.And in the power drive system of reciprocating double ratchet vehicle, 1. crank is not to fasten with axis but by bearing crank is installed on the axis, and promptly crank can freely rotate on axis, and is equipped with on the crank ratchet is installed on a sour jujube axle, the sour jujube axle; On the axis except that being fixed with sprocket wheel, and be fixed with ratchet, ratchet on the crank and ratchet are formed ratchet and are paid, when crank rotated forward, the moving ratchet of ratchet rotated it in the same way; 3. axis adds and is fixed with retracing spring, and the other end of retracing spring is added on the crank, when crank applies power and turns to certain position forward, stops the crank application of force, the position before under the elastic force effect of retracing spring crank being returned to the application of force.When ratchet promoted the ratchet rotation, the sprocket wheel that is fixed on the axis rotated thereupon, and by chain transmission of power is made rear wheel movement to rear flywheel.The wheel car of said structure drives laborsaving, the efficient height, and moving velocity is fast.But the retracing spring of this reciprocating type bicycle or the force limited of counter weight is set, for making the position before crank returns to the application of force, the operator must reduce to be applied to the power on the stretcher, so the difficult adaptation of user, and particularly first operator is just outstanding to feel uncomfortable.

The objective of the invention is provides a kind of new reciprocating type bicycle for the shortcoming that overcomes above-mentioned reciprocating double ratchet vehicle.

The present invention has carried out bigger improvement on the basis of known reciprocating double ratchet vehicle for achieving the above object, designs more reasonably reciprocating pedal car of a kind of structure.Be to adopt crank in the power drive system of the reciprocating type bicycle of the present invention by the structure of bearing installation on axis, be that crank can freely rotate on axis, it is characterized in that assembling in the middle pedestal of axis and a pair of left and right sides ring gear is set by two needle bearings, the ring gear outside has Yi Zhudao, this Zhu Dao matches with the axis shelves and is used to install axis, have ratchet on the ring in the ring gear, the ring gear medial extremity has the gear teeth; The ratchet on the ring is installed in two groups of ratchets and constitutes two groups of ratchets and pay in the corresponding ring gear on axis, be provided with locating bush between the ring gear medial extremity of the corresponding left and right sides on the middle pedestal, locating bush is used for the installing and locating reversing gear, two ring gears about reversing gear is arranged in, intermediary wheel as two ring gears, reversing gear can be processed into bevel gear, garden stud wheel or helical wheel; Have slotted eye in the ring gear outside, the position that crank is relative also has slotted eye, makes crank and ring gear locking constitute the major impetus driving system of reciprocating type bicycle with set pin.Identical with routine techniques, sprocket wheel is fixed on the axis, connects with flywheel on the back axle by chain.The action principle of the reciprocating type bicycle of the present invention is as follows, and the pedal of stepping on the right crank drives right ring gear rotation by set pin, and the interior ring of ring gear is gone up ratchet by the rotation of the locking of the ratchet on axis drive axis, and the sprocket wheel that is fixed on the axis will rotate synchronously.Simultaneously right ring gear nearside wheel cingulum reversing gear rotates, reversing gear band left side ring gear nearside wheel teeth directional backward rotation as intermediary wheel, promptly will drive left ring gear inhour when right ring gear clockwise rotates rotates, at this moment ratchet in the left ring gear on the ring and the ratchet on the axis are forward, left side ring gear freely rotates by the pin on the left ring gear around axis will drive left crank rotation, and left-hand tread plate is with turning anticlockwise (making progress).When left-hand tread plate returns to certain altitude (being suitable for stepping action most), step on left-hand tread plate, wheel rotates in will driving as above-mentioned identical process left side crank, and right-hand tread plate will be resetted.So doing stepping of pedal repeatedly downwards can make the axis continuous rotation, and drives sprocket wheel, chain and flywheel motion.

Give to illustrate further below in conjunction with the power drive system of accompanying drawing to reciprocating type bicycle of the present invention.

Accompanying drawing 1 is axle construction cut-away view in the reciprocating type bicycle power drive system of the present invention; Accompanying drawing 2 is the cut-away view of accompanying drawing 1 along the N-N face.

The right ring gear of .1. in the accompanying drawing; 2. left ring gear; 3. needle bearing; 4. reversing gear; 5. locating bush; 6. axis; 7. ratchet; 8. interior ratchet; 9. right crank; 10. left crank; 11. pin; 12. axis shelves; 13. sprocket wheel; 14. protect nail; 15. middle pedestal.

Outside middle shaft part separation structure shown in the accompanying drawing 1,2, other structure of the power drive system of bicycle is identical with the structure of common bicycle.

Can be an embodiment of power drive system of the present invention by the axis of structure shown in attached Fig. 1 and 2.Two pairs of needle bearings (3) are set in middle pedestal (15), install right, left side ring gear (1,2), be added with intermediary's reversing gear (4) between right ring gear (1) and left ring gear (2), reversing gear (4) is located by the fixed cover (5) on the middle pedestal (15), axis (6) penetrates in ring gear (1) and (2), adjust its gap with two axis shelves (13), two groups of ratchets (7) on the axis (6) respectively with the right side, interior ratchet (8) in the ring gear of a left side on the ring constitutes ratchet and pays, the right side of axis (6) two ends mounting strap bearing, right crank (9,10), crank is by set pin (11) and ring gear locking, in being fixed on sprocket wheel (13), right crank (9) outside takes turns, the axis two ends add to be protected nail (14) and prevents that crank from coming off, finish the assembling of axis, the other parts of reciprocating type bicycle are identical with the appropriate section of ordinary bicycle, can be assembled into bicycle of the present invention according to a conventional method.

The operational process of above-mentioned power drive system is as follows: the pedal that rider steps on the right side or left crank (9) or (10) (following is example with the right side only) makes the preceding rotation of crank (9) clockwise direction, the right ring gear (1) of the lock (11) that is fixed locking rotates with tooth, ratchet (7) locking in the ring gear (1) on interior ratchet (8) of ring and the axis (6) will drive the rotation of axis (6) chain.Rotating simultaneously drive again at right ring gear (1) becomes the reverse wheel (4) of gear pair to rotate with it, reverse wheel (4) is as right, the intermediary wheel of left side ring gear, left ring gear (2) and right ring gear (1) are oppositely reversed, interior ratchet (8) on left ring gear this moment (2) becomes forward with the ratchet (7) on the axis (6), left side ring gear (2) rotates freedom around axis (6), driven as conter clockwise with the fixed left crank (10) of set pin (11) pin with left ring gear (2) and to be rotated backward, left-hand tread plate rises thereupon, right crank (descends) to turn to certain position (becoming 60 ℃ downwards with horizontal frame approximately) forward, crank reset (the making progress into 60 ℃) of rising in a left side with horizontal frame, step left-hand tread plate and repeat said process, do continuous rotation driving axis.The sprocket wheel (13) that is fixed on the axis rotates with axis, by chain transmission of power is arrived flywheel, orders about the bicycle motion.

In the bicycle operational process, as crank (9) with (10) are static does not move, at this moment, the interior ratchet (8) on ring gear (1) and (2) all becomes forward with the ratchet (7) on the axis (6), and axis rotates does not influence crank (9) and (10) but slide relative.The flywheel of the reciprocating type bicycle of the present invention also can be used the minor sprocket replacement instead like this, simplifies the structure of rear axle rotating element, reduces the cost of bicycle.

In addition, the sprocket wheel in the reciprocating type bicycle of the present invention also routinely technology groups dress up multiple sprocket, form transmission system, make bicycle become the wheel car of variable-ratio.By above-mentioned, the crank of bicycle of the present invention is a crank motion in effective application of force scope, can realize that propulsive effort is little, and it is fast to travel.The axis system of this structure also is suitable for various wheel cars, as bicycle, and three-wheel vehicle, wheel Wheel-chair or on other foot-operated wheel car, use.

Claims

1. reciprocating type bicycle, be to adopt crank in the power drive system by the structure of bearing installation on axis, it is characterized in that in middle pedestal (15), being provided with two pairs of needle bearings (3), install right, left side ring gear (1,2), be added with intermediary's reversing gear (4) between right ring gear (1) and left ring gear (2), reversing gear (4) is located by the fixed cover (5) on the middle pedestal (15), axis (6) penetrates in ring gear (1) and (2), adjust its gap with two axis shelves (13), two groups of ratchets (7) on the axis (6) respectively with the right side, interior ratchet (8) in the ring gear of a left side on the ring constitutes ratchet and pays, the right side of axis (6) two ends mounting strap bearing, right crank (9,10), crank is by set pin (11) and ring gear locking, on taking turns in right crank (9) outside is fixed on sprocket wheel (13), the axis two ends add to be protected nail (14) and prevents that crank from coming off, and finishes the assembling of axis.