CN2238198Y

CN2238198Y - Speed-increasing power-saving chain wheel device for bicycle or man-power tricycle

Info

Publication number: CN2238198Y
Application number: CN 95237408
Authority: CN
Inventors: 范光祈; 刘蕊梅
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-11
Filing date: 1995-08-11
Publication date: 1996-10-23
Anticipated expiration: 2005-08-11

Abstract

The utility model relates to a speed-increasing power-saving chain wheel device for bicycles or man-power tricycles. On the basis of an original transmission mechanism, a big chain wheel is additionally provided with a low speed lever, a driving gear, a rack bar, a compression spring, and a pull-back spring acceleration. A clutch is composed of a gearset, a gear ring and a ratchet wheel seat. The reversing-control mechanism is composed of a shifting fork, an eccentric shaft, a slide block, a pulling handle, a pusher dog and a centring plate. The utility model has the advantages of compact structure, simple components, high standardization, easy production, low cost, easy operation, easy use, and obvious acceleration effect. The utility model is suitable for various man-power vehicles with a chain wheel and a chain driving device as the speed-increasing power-saving device.

Description

Bicycle, manual tricycle speed increasing force saving chain gear apparatus

The utility model relates to the annex of bicycle, manual tricycle, particularly a kind of bicycle, manual tricycle speed increasing force saving chain gear apparatus.

Existing bicycle, manual tricycle all are to adopt sprocket wheel, chain gear, be very much effort when running into the abrupt slope in riding, Chinese patent application number is 94200532.5 to disclose a kind of bicycle hydraulic link wheel drive unit, it adopts and sets up a cover hydraulic pressure sprocket speed changing device and a chain drive, its structure is complicated, and that processing and manufacturing requires is high, manufacturing cost is high, maintenance is difficult, be not easy to promote the use of.

The purpose of this utility model provides a kind of speedup, laborsaving chain gear apparatus of forming at the additional tooth bar of hinge wheel, gear, spring, power-transfer clutch.

The utility model is realized with following mode: wheel plate is fastened on the hinge wheel, connecting panel is fastenedly connected wheel plate through cushion block and becomes circle framework, clutch spindle is fastened on the axis, gear is fixed on the clutch spindle cylindrical and is fastening with pedal crank, driving gear is slidably mounted on the axis, one side and the quadrant gear lever engagement that is fixed on the connecting panel, the sliding surface of quadrant gear lever is in contact with one another with the roller that is fixed on the Connection Block of ratchet outer ring, driving gear opposite side and tooth bar engagement, tooth bar is installed on the connecting panel of hinge wheel by guide rod, compression spring one end is connected on the connecting panel, the other end connects on the termination of tooth bar, and pull back spring one end is fixed on the roller of Connection Block, and the other end is fixed on the connecting panel, Connection Block is fixed on the ratchet outer ring, and the ratchet inner ring is fixed through pawl seat; Gear is by being contained in intermediate gear and the gear mesh on the connecting panel, gear is fixed on little axle one end, little axle is contained on the bearing carrier ring and bearing carrier ring that bearing is housed respectively, bearing carrier ring be separately fixed on the connecting panel and wheel plate on, gear is contained in the other end and the gear mesh that is installed in pawl seat of little axle, shift fork is installed on the slide block, slide block is installed on the tie bolt, pressing plate and pressing plate are fastening by tie bolt, eccentric shaft is installed on the slide block, pusher dog is installed on the pawl seat, draws an end of handle to be connected with eccentric wheel.

The utlity model has compact conformation, parts are simple, and the standardization level height is easy to make, cost is low, and is easy and simple to handle, laborsaving during use, advantages such as the speedup effect is obvious, and is attractive in appearance, the human powered vehicle that is suitable for all kinds of employing sprocket wheels, chain drive is done the use of speed increasing force saving device.

Fig. 1 the utility model front view

Fig. 2 is the cutaway view of Fig. 1

Below in conjunction with accompanying drawing the utility model is described in further detail: present embodiment is under hinge wheel, flywheel, the former driving device situation of chain, on hinge wheel 12, fasten with screws wheel plate 11, refill five cushion blocks that certainly vary in size 27 and be loaded into a circle framework with connecting panel 8, and on connecting panel 8, set up low speed starting, speed increasing force saving systems such as quadrant gear lever 4, roller 6, Connection Block 5, tooth bar 9, spring, three parts of variable-speed gear system and control system are formed.

Its structural relation is to be connected with clutch spindle 2 with axis 1, and clutch spindle 2 usefulness screws and pin are fastened on the axis 1, and concentric with axis 1.Gear 13 is fixed on clutch spindle 2 cylindricals, and fastening with pedal crank 36.Driving gear 3 and axis 1 be bearing fit and with the clutch spindle 2 concentric actions that cooperatively interact, on driving gear 3 end faces denture clutch is arranged, one side of driving gear 3 and 4 engagements of quadrant gear lever, quadrant gear 4 is fixed on the connecting panel 8, contact mutual skid with roller 6 on the Connection Block 5 that is fixed on ratchet outer ring 33 moving, transfers trap 26 to help to regulate the tolerance clearance of wheel plates 11 and ratchet outer ring.The opposite side of driving gear 3 and tooth bar 9 engagements.One end of compression spring 10 is connected with tooth bar 9, and the other end is installed on the axle bed on the connecting panel 8, and ratchet inner ring 34 is fixed on the vehicle body by pawl seat 19.Bearing 30 cooperates fastening with pawl seat by screw thread, packing ring 31 is to regulate axial distance, more than constitutes low speed starting speed increasing force saving system.

Variable-speed gear system is that gear 13 is fastened on the clutch spindle 2 with pedal crank 36, by intermediate gear 14 and gear 15 engagements, gear 15 is fixed on an end of little axle 16, little axle 16 is contained on connecting panel, bearing carrier ring 16a and the bearing carrier ring 16b, bearing carrier ring 16a is fixed on the wheel plate 8, cylindrical roller bearing is housed, and bearing carrier ring 16b is fixed on the wheel plate 11, and a single-row radial ball bearing is housed.Gear 17 is contained in the other end of little axle 16 and meshes with gear ring 18, and gear ring 18 is installed on the pawl seat 19 and constitutes variable-speed gear system.

Control system is to be installed on the slide block 22 by shift fork 20, slide block 22 is installed on the tie bolt 25 that is fixed in vehicle body, pressing plate 24a and pressing plate 24b are fastened on the vehicle body by tie bolt 25, promptly under the triangle crotch of vehicle frame, and reserve the position accurately by centering plate 29.Eccentric shaft 21 is installed on the slide block 22, and pusher dog 28 is installed on the pawl seat 19, draws the end 23 to be connected with eccentric shaft 21, and the other end is connected with control line one end on being fixed on the vehicle frame handgrip.

Principle of work: drive quadrant gear levers 4 and prize hinge wheel 12 and slowly run because of denture clutch axle 2 and transmission gear 3 is housed on the axis of car, meanwhile, driving gear 3 drives tooth bar 9 motions, when tooth bar 9 compression springs 10 arrive to a certain degree, promotes the hinge wheel high speed rotating.With Connection Block that quadrant gear lever 4 is connected on pull back spring 7 is housed, when pedal crank 36 during at the dead point, under the effect of two pull back springs 7, compression spring 10 and extension spring, make driving gear 3, tooth bar 9 and quadrant gear lever 4 homings, when pedal crank is exerted all one's strength once more, what the above-mentioned part on the hinge wheel 12 repeated again moves, and promotes the rotation of hinge wheel, reciprocal always work.In pawl seat and variable speed control mechanism, shift fork 20 and pusher dog 28 and eccentric shaft 21 are housed, to reach the effect that speed change and bicycle fall back flexibly.When people's bicycle or manual tricycle crank throw drive to travel, starting the speed increasing force saving system at a slow speed starts working, reach the purpose of speed increasing force saving, when you drive bicycle or manual tricycle climb very steep slopes when reversing (or want bicycle rear), as long as stir the controller on the handgrip, just become low speed driving, make you cross the abrupt slope easily.

Claims

1, a kind of bicycle, manual tricycle speed increasing force saving chain gear apparatus, it is characterized in that wheel plate (11) is fastened on the hinge wheel (12), connecting panel (8) is fastenedly connected wheel plate (11) through cushion block (27) and becomes circle framework, clutch spindle (2) is fastened on the axis (1), gear (13) is fixed on clutch spindle (2) cylindrical and is fastening with pedal crank (36), driving gear (3) is slidably mounted on the axis (1), the one side be fixed on connecting panel (8) and go up quadrant gear lever (4) engagement, the sliding surface of quadrant gear lever (4) is in contact with one another with the roller (6) that is fixed on the Connection Block (5) of ratchet outer ring (33), driving gear (3) opposite side and tooth bar (9) engagement, tooth bar (9) is installed on the connecting panel (8) of hinge wheel (12) by guide rod (35), compression spring (10) one ends are connected on the connecting panel (8), the other end connects on the termination of tooth bar (9), pull back spring (7) one ends are fixed on the roller (6) of Connection Block (5), the other end is fixed on the connecting panel (8), Connection Block (5) is fixed on the ratchet outer ring (33), and ratchet inner ring (34) is fixing through pawl seat (19); Gear (13) is by being contained in the intermediate gear (14) and gear (15) engagement on the connecting panel (8), gear (15) is fixed on little axle (16) one ends, little axle (16) is contained on the bearing carrier ring (16a) and bearing carrier ring (16b) that bearing is housed respectively, bearing carrier ring 16a is fixed on the connecting panel (8), bearing carrier ring (16b) is fixed on the wheel plate (11), gear (17) is contained in the other end and gear (18) engagement that is installed in pawl seat (19) of little axle, shift fork (20) is installed on the slide block (22), slide block (22) is installed on the tie bolt (25), pressing plate (24a) and pressing plate (24b) are fastening by tie bolt (25), eccentric shaft (21) is installed on the slide block (22), pusher dog (28) is installed on the pawl seat (19), draws an end of (23) is connected with eccentric wheel (21).