CN2248156Y

CN2248156Y - Bicycle

Info

Publication number: CN2248156Y
Application number: CN 95202641
Authority: CN
Inventors: 刘延鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-01-27
Filing date: 1995-01-27
Publication date: 1997-02-26
Anticipated expiration: 2005-01-27

Abstract

The utility model relates to a bicycle; one side of a center shaft of the bicycle is provided with two disk chucks; two flying wheels with different radii and a freewheel clutch are arranged at one side of the wheel shaft of a rear wheel; two drive chains are respectively sheathed the disk chucks with different radii, flying wheels with different radii and the gear of the flywheel clutch; force is transferred in a radial plane. The utility model keeps the advantage of the existing mountain bicycle, overcomes defects of the gear mechanism with complicated speed change, easy damage and high cost and can change freely shifts in running, with firmness and durability.

Description

New bicycle

The invention belongs to bicycle and make the field.

Background technology of the present invention is: existing bicycle is because it can not be shifted, so effort when climbing, on level road, can not improve speed, and mountain bike is made of front-wheel, trailing wheel, handlebar, vehicle seat, floral disc, chain, tension wheel, handle gearshift and four or five grades of speed-changing mechanisms etc. on structure design.Its shortcoming: the one, complex structural designs, manufacturing process complexity, cost height, the 2nd, adopt strand bar, handle gearshift by the tension wheel gear shift, the transmission that causes strength is not on same diametric plane, friction force and torsion occurring increases, also to overcome resistance that tension wheel etc. produces etc. simultaneously, the 3rd, this car adopts the structure that increases or reduce flywheel diameter, the hillside fields is laborsaving travels to reach, but speed is too slow, the 4th, in-motion shifting, very easily damage flywheel gear, thus the gear shift inconvenience, the 5th, gear shift mechanism is four or five grades, cumbersome impracticable, fragile.

Design goal of the present invention is: avoid weak point of the prior art, design a kind of mountain bike advantage that promptly both had, can overcome the new bicycle of existing mountain bike deficiency again effectively.

Design plan of the present invention is: existing mountain bike reach the purpose of speed change, and the present invention reaches increase output transmission power mainly by its floral disc radius is changed, and reaches speed change, labour-saving purpose by the settings to its flywheel difference wheel footpath.

1, theoretical foundation: new bicycle speed change, labour-saving moment relation is: the radius of establishing the power that acts on pedal and be F1, pedal is R1, the power that acts on floral disc is that the radius of F2, floral disc is R2, the power that acts on flywheel be F3, flywheel radius for R3, the friction force of back wheels of vehicle is F4, the radius of wheel is R4, according to the mechanical balance principle, drive torque equals resisting moment, so: F1 * R1=F2 * R2 ≈ F3 * R3=F4 * R4.By the following formula gained: when R1 increases, moment (M1=F1 * R1) increase, because F1 * R1=F2 * R2, so when R2 reduced, propulsive effort F2 increased, because floral disc and flywheel are in radially transmission by chain, the very little F2=F3 of its friction force and resistance, can be similar in design and think F2 * R2 ≈ F3 * R3, when R3 reduced, propulsive effort F3 increased, again because F3 * R3=F4 * R4, F4 * R4 is constant when resisting moment, and propulsive effort F3 increases during climbing, and car travels at a slow speed, so it is laborsaving, when adopting the level land shelves, because propulsive effort F3 increases, R3 reduces, so the speed of a motor vehicle increases.

2, organization plan: a kind of new bicycle, it comprises front-wheel (1), trailing wheel (9), handlebar (2), spider (3), vehicle seat (5) and after poppet (6), one side of axis (14) is equipped with two floral discs (12,13), one side of the axle of trailing wheel (9) is equipped with the flywheel (7) (or flywheel-type power-transfer clutch) and the flywheel-type power-transfer clutch (8) of two different radiis, article two, chain is enclosed within the floral disc (12 of different radii respectively, 13) and on the flywheel-type power-transfer clutch (8) of different radii and the flywheel (7) (or flywheel-type power-transfer clutch), and the transmission of strength is all carried out in a sagittal plane.The diameter of a floral disc in two floral discs (12,13) is than the big 1/15--10/15 of diameter of bicycle floral disc, and the diameter of another floral disc is than the little 1/3--2/3 of bicycle floral disc diameter.Large faceplate (12) constitutes closed transmission device by chain (11) and small flywheel formula power-transfer clutch (8), and small faceplate (13) constitutes closed transmission device by chain (10) and big flywheel (7) (or big flywheel-type power-transfer clutch).The bicycle pedal of the design's different automobile types is pedaled bar and is pedaled the long 10--40MM of bar than existing similar model bicycle pedal.A kind of new bicycle force-saving speed-varying method, reduce the floral disc radius and increase the bicycle pedal radius, floral disc adopts two floral discs of different radii, flywheel adopts two flywheels or the flywheel-type power-transfer clutch of different radii, chain is that double-stranded bar and one are enclosed within on large faceplate and the small flywheel formula power-transfer clutch, another is enclosed within on small faceplate and the big flywheel (or big flywheel-type power-transfer clutch), thereby constitute two closed transmission devices, when making a transmission device out of service by power-transfer clutch, another transmission device is in running state.The jacking block (very heavy) (19) of flywheel (7) is gone up intrinsic minor axis (20), and minor axis one side is equipped with and is used for controlling jacking block (very heavy) (19) and separates with the flywheel ratchet or ingear clutch controller (15); Be shaped on the elongated slot (21) that slides for minor axis on the cover plate of flywheel (7).Control mechanism (15) is made of spring (22), gland (23), brake silpper (24) and housing (25), and spring (22) is enclosed within on the step of brake silpper (24), and brake silpper (24) is positioned at the space of gland (23) and housing (25) formation.The center of gland (23) is shaped on axis hole (26); The in-to-in front portion of brake silpper (24) is horn-like (28) and the rear portion is garden tubular (27).A kind of flywheel-type power-transfer clutch, it comprises flywheel (7), a side of flywheel (7) is equipped with and is used for controlling flywheel jacking block (very heavy) (19) and separates with ratchet in the flywheel or ingear clutch for clutch control mechanism (15).A kind of method that the flywheel-type power-transfer clutch is changed system into the flywheel-type power-transfer clutch is: the outside of two jacking blocks (very heavy) (19) in the flywheel (7) is fixed with minor axis (20) respectively, and minor axis one side is equipped with and is used for controlling flywheel jacking block (very heavy) and separates with ratchet in the flywheel or ingear control mechanism (15).

3, principle of work: 1. level land fast running: large faceplate drives small flywheel formula power-transfer clutch rotation on the trailing wheel by chain, and small flywheel formula power-transfer clutch drives trailing wheel very fast to overtake.2. travel at a slow speed in the hillside fields: with the jacking block in the flywheel-type power-transfer clutch (19) by the handle on the handlebar, steel wire (18), support (17), sliding shoe control stalk (16) drives slipper (24) and moves, minor axis (20) * under the effect of slipper inwardly shrink and with slipper in garden tube inwall touch mutually, thereby jacking block (very heavy) is separated with ratchet in the flywheel-type power-transfer clutch, make the flywheel in the flywheel-type power-transfer clutch be in idling conditions, small faceplate rotates by the big flywheel (or big flywheel-type power-transfer clutch) that chain drives on the trailing wheel, big flywheel (or big flywheel-type power-transfer clutch) drives trailing wheel and travels at a slow speed, thus labour-saving purpose when having reached the hillside fields climbing and travelling.

The present invention compares with background technology, the one, structure design novelty, uniqueness, simple, firm, durable, cost is low; The 2nd, not only kept the advantage of existing mountain bike, but also overcome that its speed-changing mechanism speed change is cumbersome, rapid wear, deficiency that cost is high; The 3rd, the present invention is at motoring condition shift freely, and not fragile.Car has when load heavy duty on the level land, or a starting can adopt hill gear to start bicycle when promptly climbing, and this moment is obviously laborsaving.When needing to quicken, become the level land shelves again; The 4th, in travelling according to road conditions and own wish at any time shift and shift make things convenient for freely, reach laborsaving purpose; The 5th, not only under existence conditions, can utilize bicycle originating firm existing installation to produce new car, and can transform old car; The 6th, inexpensive,, adaptation China's actual conditions approaching, sturdy and durable with old-fashioned car fare lattice, and help foreign exchange earning.

Description of drawings:

Fig. 1 is a structural representation of the present invention.

Fig. 2 is the structural representation of flywheel-type power-transfer clutch.

Fig. 3 is the semi-sictional view structural representation of flywheel in the flywheel-type power-transfer clutch.

Fig. 4 is the semi-sictional view structural representation of first kind of flywheel-type power-transfer clutch.

Fig. 5 is the local structure scheme drawing of second kind of flywheel-type power-transfer clutch.

Embodiment:

Fig. 1--Fig. 5 is embodiments of the invention.

Implement: the installation of front-wheel (1), trailing wheel (9), handlebar (2), spider (3), vehicle seat (5) and after poppet (6) connects and belongs to prior art.One side of axis of the present invention (14) is equipped with two floral discs (12,13), one side of the wheel shaft of trailing wheel (9) is equipped with the flywheel (7) (or flywheel-type power-transfer clutch) and the flywheel-type power-transfer clutch (8) of two different radiis, article two, driving chain is enclosed within the floral disc (12 of different radii respectively, 13) and on the flywheel-type power-transfer clutch (8) of different radii and the flywheel (7) (or flywheel-type power-transfer clutch), and the transmission of strength is all carried out in a sagittal plane.A faceplate diameter in two floral discs (3) is than the big 1/15--10/15 of diameter of bicycle floral disc, and another faceplate diameter is than the little 1/3--2/3 of bicycle floral disc.Large faceplate (12) constitutes closed transmission device by chain (11) and small flywheel formula power-transfer clutch (8), and small faceplate (13) constitutes closed transmission device by chain (10) and big flywheel (7) (or big flywheel-type power-transfer clutch).The bicycle pedal of the design's different automobile types is pedaled bar and is pedaled the long 10--40MM of bar than the bicycle pedal of existing similar model.

The enforcement of flywheel-type power-transfer clutch: be fixed with minor axis (20) on the jacking block (very heavy) (19) of flywheel (7), be equipped with on the minor axis and be used for jacking block (very heavy) (19) is separated or ingear clutch for clutch control mechanism (15) with the ratchet (29) of flywheel.

The embodiment of clutch for clutch control mechanism (15) 1: clutch for clutch control mechanism (15) is positioned at a side of flywheel (7).The jacking block (19) of flywheel (7) is gone up intrinsic minor axis (20); Be shaped on the elongated slot (21) that slides for minor axis on the cover plate.Clutch for clutch control mechanism (15) is made of spring (22), gland (23), brake silpper (24) and housing (25), and spring (22) is enclosed within on the step of brake silpper (24), and brake silpper (24) is positioned at the space of gland (23) and housing (25) formation.The center of gland (23) is shaped on axis hole (26); The in-to-in front portion of brake silpper (24) is horn-like (28) and the rear portion is garden tubular (27).

The embodiment of clutch for clutch control mechanism (15) 2: clutch for clutch control mechanism (15) by two clutch semi-rings (30), guidepost (31), positioning guiding plate (32), stage clip (33), and clutch steel wire (34) constitute, guidepost (31) is separately fixed at two clutch ring (30) last dawn on same sagittal plane, and positioning guiding plate (32) upward upper and lower symmetry has chute and is enclosed within on the guidepost (31); Stage clip (33) is positioned on the positioning guiding plate, its two ends respectively with two clutch semi-rings (30) on interior guidepost touch mutually, the front portion of clutch steel wire (34) is separately fixed on the guidepost (31) for the double joint steel wire.

Claims

1, a kind of new bicycle, it comprises front-wheel (1), trailing wheel (9), handlebar (2), spider (3), vehicle seat (5) and after poppet (6), it is characterized in that: a side of axis (14) is equipped with two floral discs (12,13), one side of the axle of trailing wheel (9) is equipped with the flywheel (7) and the flywheel-type power-transfer clutch (8) of two different radiis, article two, chain is enclosed within respectively on the flywheel-type power-transfer clutch (8) and flywheel (7) of the floral disc (12,13) of different radii and different radii.

2, new bicycle according to claim 1, it is characterized in that: large faceplate (12) constitutes closed transmission device by chain (11) and small flywheel formula power-transfer clutch (8), and small faceplate (13) constitutes two closed transmission devices by chain (10) and big flywheel (7).

3, new bicycle according to claim 1 is characterized in that: a side of flywheel (7) is equipped with and is used for controlling flywheel jacking block (19) and separates with ratchet in the flywheel or ingear clutch for clutch control mechanism (15).

4, new bicycle according to claim 3 is characterized in that: the jacking block (19) of flywheel (7) is gone up intrinsic minor axis (20), and minor axis one side is equipped with and is used for controlling jacking block (19) and separates with the flywheel ratchet or ingear clutch controller (15); Be shaped on the elongated slot (21) that slides for minor axis on the cover plate of flywheel (7).