CN2277367Y

CN2277367Y - Double-ratchet gearing for manpower vechicle

Info

Publication number: CN2277367Y
Application number: CN 96241594
Authority: CN
Inventors: 金泰焕
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-11-01
Filing date: 1996-11-01
Publication date: 1998-04-01
Anticipated expiration: 2006-11-01

Abstract

The utility model relates to a double-ratchet gearing for a manpower machine, comprising a flywheel 16, a flywheel 17, a setting wheel 13 and a strap assembly 15. The flywheel 16 and the flywheel 17 are both composed of a ratchet rack, a ratchet pawl and an inner ratchet. The flywheel 16 and the flywheel 17 are arranged on an output shaft 9 in the same direction. The strap assembly 15 rounds the flywheel 16, the setting wheel 13 and the flywheel 17 and then leads out two end heads. The two end heads can be connected with pedals or a rocker. The output shaft 9 is connected with a bicycles or a power shaft of other machinery. Compared with a crank gear, the utility model has the advantages that the idle stroke of feet pedaling or hands rocking is short, average driving moment is large, and transmission speed is high.

Description

The two ratchet mechanism that are used for the manpower machine

The utility model relates to the mechanical transmission mechanism that is used for the manpower machine, and is especially a kind of for bicycle, various rickshaw, ship and the two ratchet mechanism that are used for the manpower machine foot-operated or that armstrong's patent uses.

In rickshaw, ship and machineries such as bicycle, hand or foot-operated pleasure-boat and sewing machine, straw-rope machine, be extensive use of bent axle or crank mechanism at present.Backlash is long in the circular movement process, efficient is low for this machinery, and average torque is little, and speed is difficult for improving.

The purpose of this utility model is low at bent axle in manpower transportation and the manual machine or crank drive efficient, the problem that average torque and speed are difficult to improve, provide a kind of efficient higher, be convenient to reach at a high speed and the labour-saving can be widely used in two ratchet mechanism of various manpower machines.

The utility model is achieved in that the two ratchet mechanism that are used for the manpower machine comprise the flywheel of two coaxial mounted band internal tooth ratchets, an output shaft, a third wheel and a drawstring assembly.In the middle of the flywheel of band internal tooth ratchet be the sour jujube frame, on the sour jujube frame ratchet is housed, and the ratchet of band internal tooth is contained on the sour jujube frame, and meshes with ratchet on the sour jujube frame.Two flywheels are packed on the output shaft by identical turning to.The drawstring assembly earlier after first flywheel, third wheel, second flywheel on flywheel and third wheel.Third wheel was contained on the wheel shaft.

Can be shaped on the transmission trough of belt on the cylindrical of flywheel and third wheel or be shaped on sprocket with chain engages.

Said drawstring assembly can be the driving band by frictional transmission, also can be chain.The drawstring assembly comprises the drawstring at two ends and the middle band of crossing.Drawstring is connected by the angle joint with the mistake band.

The principle of work that is used for two ratchet mechanism of manpower machine is: as application force F ₁Act on an end A of drawstring assembly, terminal A is to A ' motion, and drawstring drives the ratchet motion on the left side.Under ratchet and ratchet effect, the sour jujube frame of flywheel rotates and drives by output shaft the sour jujube frame rotation of left side flywheel on the right of making.This moment, the ratchet of left side flywheel was inoperative.The drawstring terminal B of the drawstring assembly other end moves on to B ' point by the B point.As a same reason, as power F ₂When affacting the drawstring terminal B, left end drawstring one end moves to the B point by B ', makes output shaft continue to rotate by original direction.Therefore, alternately to drawstring assembly two ends firmly, drawstring just can maximum torque drive the output shaft rotation.

During use, drawstring assembly two ends are connected on respectively on two pedals of bicycle, or are connected on the manual fork of machine, output shaft be connected on the bicycle rear or the dynamical axis of other machines on, bicycle or other machines just can be worked.

Compare with crank driving mechanism, the advantage of two ratchet mechanism is that the backlash of hand or pin motion is short, and driving torque is big, the transmission speed height.Adjust wheel location and can change the drawstring stroke.

Fig. 1 is the constructional drawing that is used for two ratchet mechanism of manpower machine;

Fig. 2 is the scheme drawing that two ratchet mechanism of being used for the manpower machine are used for popular bicycle;

Fig. 3 is the scheme drawing that two ratchet mechanism of being used for the manpower machine are used for mountain bike;

Fig. 4 is the partial schematic diagram that two ratchet mechanism of being used for the manpower machine are used for little type ship.

The utility model is described in further detail below in conjunction with accompanying drawing;

As shown in Figure 1, the two ratchet mechanism that are used for the manpower machine flywheel 17 that comprises the flywheel 16 that constitutes by ratchet 6, ratchet 7, sour jujube frame 8, constitute by ratchet 12, ratchet 11, sour jujube frame 10.Flywheel 16 and flywheel 17 are packed on the output shaft 9 by equidirectional.By drawstring 1, drawstring 5, cross with 3 and the drawstring assembly 15 that connects and composes of angle joint 2, angle joint 4 successively on flywheel 16, third wheel 13 and flywheel 17.

As shown in Figure 2, when two ratchet mechanism were used for the coventional type bicycle, rear axle housing was output shaft 9, and flywheel 16, flywheel 17 are contained in the two ends of output shaft 9.Third wheel 13 is contained on the back vent 33 by wheel shaft 14.In addition, back vent 33 right sides are stepped on arm axle 29 by the right side and a right side is housed is stepped on arm 27; Back vent 33 passes on left a left side and steps on arm axle 30 and a left side is housed steps on arm 28.The right side is stepped on arm 27 and a left side and is stepped on right connector 23, right pulley 21 and left joint 24, left chain wheel 22 are housed respectively on the arm 28.Left guide wheel 20 and right guide wheel 19 also are equipped with by guide wheel shaft 18 in the top of back vent 33.Drawstring assembly 15 left ends are fixed on the left joint 24, walk around left chain wheel 22, left guide wheel 20, left side flywheel 17, third wheel 13, right-hand member flywheel 16, right guide wheel 19, right pulley 21 after, right-hand member is fixed on the right connector 23.34 is crossbeam among the figure, and 35 is lady's car curved beam.When with right pedal 25, drawstring assembly 15 drives flywheel 16 by right guide wheel 19 changed course backs and rotates, flywheel 17 idle running, and bicycle moves ahead, and simultaneously left foot is pedaled 26 pull-ups.When pedaling bottom left pedal 26 with left foot, drawstring assembly 15 is by left chain wheel 22, left guide wheel 20, and the changed course back drives flywheel 17 and rotates, flywheel 16 idle running, and bicycle continues to move ahead.Adjust the position of third wheel 13, can change the pedal stroke, stay cord when also helping with right pulley 21 and left chain wheel 22 acceleration.During acceleration, the two ends that only need right connector 23 and left joint 24 to be connected to guide wheel shaft 18 respectively get final product.

As shown in Figure 3, when two ratchet mechanism were used for mountain bike, flywheel 16 and flywheel 17 were contained in the top of back vent 33 by output shaft 9.Third wheel 13 is contained on the batter post 32 by crossing axle block 36.Drawstring assembly 15 1 ends are fixed on left foot and pedal, walk around flywheel 17, third wheel 13, flywheel 16 after, the other end is fixed on the right pedal.Sprocket wheel 37 and flywheel 16, flywheel 17 same axle mountings, chain 38 is contained on sprocket wheel 37 and the former flywheel 39 of bicycle.Consider the rigidity of car,

reinforcement

41,42,43 is housed on the car.

Fig. 4 is the partial schematic diagram that two ratchet mechanism are used for little type ship.Helical mount 59 is installed on the output shaft 9 of flywheel 16,17.Drawstring assembly 15 1 ends with shake rudder case 53 and be connected, walk around movable pulley 43, flywheel 16, third wheel 13, flywheel 17 and movable pulley 44 after, the other end also is fixed on and shakes on the rudder case 53.Movable pulley 43 links to each other with stay cord 48 1 ends, and after stay cord 48 was walked around fixed pulley 45, the other end linked to each other with the top of rocking bar 50.Movable pulley 44 links to each other with an end of stay cord 49, and after stay cord 49 was walked around fixed pulley 46,47, the other end linked to each other with the bottom of rocking bar 50.Handle 52 is equipped with in rocking bar 50 upper ends, and pull handle 52, rocking bar 50 just can drive screw propeller 59 by two ratchet mechanism and rotate around rocking bar fulcrum 51 back and forth movements, promote hull and advance.54 is rudderpost among the figure, and 56 is the rudderpost cover, and 55 is the output shaft bearing, and 57 is stern, and 58 is hull bottom.Rotating rudder case 53, the orientation of propeller 59 changes thereupon, thereby makes the hull course change.

Flywheel 16 and flywheel 17 can be substituted by two one-way belt sheaves.

Claims

1, a kind of two ratchet mechanism that are used for the manpower machine is characterized in that comprising the flywheel of two coaxial mounted band internal tooth ratchets, an output shaft, a third wheel and a drawstring assembly.In the middle of the flywheel of band internal tooth ratchet be the sour jujube frame, on the sour jujube frame ratchet is housed, and the ratchet of band internal tooth is contained on the sour jujube frame, and meshes with ratchet on the sour jujube frame; Two flywheels are packed on the output shaft by identical turning to; The drawstring assembly earlier after first flywheel, third wheel, second flywheel on flywheel and third wheel; Third wheel was contained on the wheel shaft.

2,, it is characterized in that to be shaped on the transmission trough of belt on the cylindrical of flywheel and third wheel, or be shaped on sprocket with chain engages by the described two ratchet mechanism that are used for the manpower machine of claim 1.

3, by the described two ratchet mechanism that are used for the manpower machine of claim 1, it is characterized in that the drawstring assembly can be the driving band by frictional transmission, also can be chain; The drawstring assembly comprises the drawstring at two ends and the middle band of crossing; Drawstring is connected by the angle joint with the mistake band.

4,, it is characterized in that flywheel 16 and flywheel 17 can be substituted by two one-way belt sheaves by the described two ratchet mechanism that are used for the manpower machine of claim 1.